8U4L

Structure of the HER2/HER4/NRG1b Heterodimer Extracellular Domain

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Growth factor receptor domain-like	8043692	3000398	SCOP2B (2021-05-27)
B	SCOP2B Superfamily	Growth factor receptor domain-like	8043694	3000398	SCOP2B (2021-05-27)
B	SCOP2B Superfamily	L domain-like	8043690	3001010	SCOP2B (2021-05-27)
B	SCOP2B Superfamily	L domain-like	8043691	3001010	SCOP2B (2021-05-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF00757	Furin-like cysteine rich region (Furin-like)	Furin-like cysteine rich region	-	Domain
B	PF01030	Receptor L domain (Recep_L_domain)	Receptor L domain	-	Repeat
B	PF14843	Growth factor receptor domain IV (GF_recep_IV)	Growth factor receptor domain IV	This is the fourth extracellular domain of receptor tyrosine protein kinases. Interaction between this domain and the furin-like domain (Pfam:PF00757) regulates the binding of ligands to the receptor L domains (Pfam:PF01030) [1].	Domain
A	PF00757	Furin-like cysteine rich region (Furin-like)	Furin-like cysteine rich region	-	Domain
A	PF01030	Receptor L domain (Recep_L_domain)	Receptor L domain	-	Repeat
A	PF14843	Growth factor receptor domain IV (GF_recep_IV)	Growth factor receptor domain IV	This is the fourth extracellular domain of receptor tyrosine protein kinases. Interaction between this domain and the furin-like domain (Pfam:PF00757) regulates the binding of ligands to the receptor L domains (Pfam:PF01030) [1].	Domain
C	PF00008	EGF-like domain (EGF)	EGF-like domain	There is no clear separation between noise and signal. Pfam:PF00053 is very similar, but has 8 instead of 6 conserved cysteines. Includes some cytokine receptors. The EGF domain misses the N-terminus regions of the Ca2+ binding EGF domains (this is t ...	There is no clear separation between noise and signal. Pfam:PF00053 is very similar, but has 8 instead of 6 conserved cysteines. Includes some cytokine receptors. The EGF domain misses the N-terminus regions of the Ca2+ binding EGF domains (this is the main reason of discrepancy between swiss-prot domain start/end and Pfam). The family is hard to model due to many similar but different sub-types of EGF domains. Pfam certainly misses a number of EGF domains.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Receptor tyrosine-protein kinase erbB-2	molecular transducer activity coreceptor activity signaling receptor activity RNA polymerase I core binding RNA polymerase binding protein binding binding RNA polymerase core enzyme binding enzyme binding catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity phosphotransferase activity, alcohol group as acceptor molecular transducer activity coreceptor activity signaling receptor activity RNA polymerase I core binding RNA polymerase binding protein binding binding RNA polymerase core enzyme binding enzyme binding catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein tyrosine kinase activity transmembrane receptor protein tyrosine kinase activity transmembrane receptor protein kinase activity transmembrane signaling receptor activity catalytic activity adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding protein tyrosine kinase binding kinase binding signaling receptor binding receptor tyrosine kinase binding protein kinase binding identical protein binding protein heterodimerization activity protein dimerization activity ErbB-3 class receptor binding	protein localization protein localization to postsynaptic specialization membrane cellular localization protein localization to postsynaptic membrane protein localization to cell periphery protein localization to synapse biological regulation localization within membrane protein localization to membrane protein-containing complex localization neurotransmitter receptor localization to postsynaptic specialization membrane localization regulation of postsynaptic membrane neurotransmitter receptor levels protein localization to organelle cellular macromolecule localization protein localization protein localization to postsynaptic specialization membrane cellular localization protein localization to postsynaptic membrane protein localization to cell periphery protein localization to synapse biological regulation localization within membrane protein localization to membrane protein-containing complex localization neurotransmitter receptor localization to postsynaptic specialization membrane localization regulation of postsynaptic membrane neurotransmitter receptor levels protein localization to organelle cellular macromolecule localization macromolecule localization cellular process protein localization to postsynapse regulation of biological quality protein localization to cell junction receptor localization to synapse developmental process multicellular organismal process regulation of multicellular organismal development regulation of biological process regulation of developmental process blood vessel morphogenesis tube development angiogenesis vasculature development regulation of vasculature development circulatory system development multicellular organism development anatomical structure morphogenesis tube morphogenesis regulation of angiogenesis anatomical structure development anatomical structure formation involved in morphogenesis regulation of multicellular organismal process regulation of anatomical structure morphogenesis blood vessel development system development heart development animal organ development cellular response to stimulus ERBB2 signaling pathway ERBB4 signaling pathway regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling cell surface receptor protein tyrosine kinase signaling pathway cell communication ERBB signaling pathway signal transduction enzyme-linked receptor protein signaling pathway ERBB2-ERBB4 signaling pathway cellular developmental process immature T cell proliferation in thymus cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation leukocyte proliferation leukocyte activation T cell differentiation in thymus T cell activation cell differentiation lymphocyte proliferation T cell differentiation T cell proliferation cell population proliferation hemopoiesis cell activation immature T cell proliferation immune system process mononuclear cell proliferation leukocyte differentiation ERBB2-ERBB3 signaling pathway ERBB3 signaling pathway negative regulation of lymphocyte proliferation regulation of leukocyte differentiation regulation of leukocyte activation negative regulation of biological process regulation of cell activation negative regulation of T cell differentiation in thymus regulation of cell differentiation negative regulation of T cell proliferation regulation of cell development negative regulation of cell adhesion negative regulation of T cell differentiation negative regulation of leukocyte proliferation regulation of immune system process regulation of immature T cell proliferation negative regulation of hemopoiesis regulation of leukocyte proliferation negative regulation of immature T cell proliferation negative regulation of leukocyte differentiation regulation of immature T cell proliferation in thymus negative regulation of T cell activation negative regulation of leukocyte cell-cell adhesion regulation of cell population proliferation negative regulation of cell-cell adhesion regulation of leukocyte cell-cell adhesion negative regulation of lymphocyte differentiation negative regulation of multicellular organismal process negative regulation of leukocyte activation regulation of T cell differentiation in thymus negative regulation of lymphocyte activation leukocyte cell-cell adhesion regulation of T cell differentiation negative regulation of mononuclear cell proliferation cell adhesion cell-cell adhesion negative regulation of cellular process regulation of cell-cell adhesion negative regulation of cell differentiation negative regulation of immature T cell proliferation in thymus regulation of lymphocyte proliferation regulation of lymphocyte differentiation negative regulation of cell population proliferation negative regulation of developmental process regulation of cell adhesion regulation of T cell activation negative regulation of cell activation negative regulation of cell development regulation of T cell proliferation negative regulation of immune system process regulation of hemopoiesis regulation of mononuclear cell proliferation regulation of lymphocyte activation protein phosphorylation organonitrogen compound metabolic process phosphorylation cellular metabolic process primary metabolic process macromolecule modification phosphate-containing compound metabolic process metabolic process protein metabolic process macromolecule metabolic process protein modification process phosphorus metabolic process regulation of signaling regulation of signal transduction regulation of MAPK cascade intracellular signal transduction regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette MAPK cascade regulation of cell communication ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade epidermal growth factor receptor signaling pathway ERBB2-EGFR signaling pathway regulation of localization establishment of protein localization regulation of protein localization protein targeting positive regulation of biological process positive regulation of establishment of protein localization regulation of protein targeting to membrane regulation of protein localization to membrane positive regulation of cellular process establishment of protein localization to membrane regulation of establishment of protein localization positive regulation of protein localization to membrane establishment of localization protein targeting to membrane regulation of cellular localization regulation of protein targeting positive regulation of protein localization positive regulation of protein targeting to membrane regulation of growth regulation of cellular component organization growth positive regulation of cell growth regulation of cell growth cell growth cellular component organization positive regulation of growth cellular component organization or biogenesis neurogenesis nervous system development central nervous system development gliogenesis oligodendrocyte differentiation glial cell differentiation phosphatidylinositol 3-kinase/protein kinase B signal transduction negative regulation of programmed cell death regulation of apoptotic process regulation of programmed cell death cell death negative regulation of apoptotic process apoptotic process programmed cell death peripheral nervous system development glial cell development Schwann cell development Schwann cell differentiation cell junction organization neuromuscular junction development synapse organization axonogenesis cell projection organization motor neuron axon guidance plasma membrane bounded cell projection morphogenesis neuron projection development cell morphogenesis cell projection morphogenesis neuron differentiation neuron projection morphogenesis plasma membrane bounded cell projection organization axon guidance axon development cell morphogenesis involved in neuron differentiation generation of neurons neuron projection guidance neuron development positive regulation of cell communication small GTPase-mediated signal transduction positive regulation of signal transduction regulation of small GTPase mediated signal transduction Rho protein signal transduction positive regulation of response to stimulus positive regulation of intracellular signal transduction regulation of Rho protein signal transduction positive regulation of Rho protein signal transduction positive regulation of small GTPase mediated signal transduction positive regulation of signaling positive regulation of cell population proliferation positive regulation of epithelial cell proliferation regulation of epithelial cell proliferation epithelial cell proliferation positive regulation of cell adhesion cellular biosynthetic process positive regulation of protein metabolic process organonitrogen compound biosynthetic process positive regulation of translation positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process post-transcriptional regulation of gene expression positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of biosynthetic process regulation of protein metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression translation macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process positive regulation of gene expression regulation of translation regulation of macromolecule biosynthetic process regulation of metabolic process positive regulation of cellular biosynthetic process peptidyl-tyrosine modification peptidyl-amino acid modification peptidyl-tyrosine phosphorylation positive regulation of phosphorylation regulation of catalytic activity regulation of transferase activity positive regulation of phosphate metabolic process regulation of MAP kinase activity positive regulation of protein serine/threonine kinase activity regulation of phosphate metabolic process positive regulation of protein phosphorylation positive regulation of MAP kinase activity positive regulation of phosphorus metabolic process positive regulation of MAPK cascade regulation of molecular function positive regulation of kinase activity regulation of kinase activity regulation of protein serine/threonine kinase activity regulation of phosphorus metabolic process regulation of protein modification process regulation of protein phosphorylation positive regulation of molecular function positive regulation of protein modification process positive regulation of protein kinase activity positive regulation of transferase activity positive regulation of catalytic activity regulation of protein kinase activity regulation of phosphorylation semaphorin-plexin signaling pathway cellular response to endogenous stimulus cellular response to growth factor stimulus response to endogenous stimulus response to growth factor wound healing response to stress response to wounding positive regulation of DNA-templated transcription RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase I regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase I regulation of RNA biosynthetic process positive regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase I nucleobase-containing compound biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription myelination axon ensheathment ensheathment of neurons cellular response to epidermal growth factor stimulus response to epidermal growth factor regulation of microtubule-based process microtubule-based process	membrane cellular anatomical entity intracellular anatomical structure cytoplasm cytosol cell periphery protein-containing complex plasma membrane protein complex plasma membrane plasma membrane signaling receptor complex membrane protein complex ERBB3:ERBB2 complex receptor complex presynapse membrane cellular anatomical entity intracellular anatomical structure cytoplasm cytosol cell periphery protein-containing complex plasma membrane protein complex plasma membrane plasma membrane signaling receptor complex membrane protein complex ERBB3:ERBB2 complex receptor complex presynapse synapse cell junction presynaptic membrane plasma membrane region synaptic membrane basal part of cell basal plasma membrane basolateral plasma membrane semaphorin receptor complex neuromuscular junction perinuclear region of cytoplasm endosome membrane membrane-bounded organelle endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle vesicle organelle membrane myelin sheath apical part of cell apical plasma membrane ruffle cell leading edge leading edge membrane plasma membrane bounded cell projection cell projection ruffle membrane cell projection membrane nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen early endosome
A	Isoform JM-A CYT-1 of Receptor tyrosine-protein kinase erbB-4	DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding transcription regulatory region nucleic acid binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity neuregulin receptor activity catalytic activity, acting on a protein DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding transcription regulatory region nucleic acid binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity neuregulin receptor activity catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein tyrosine kinase activity transmembrane receptor protein tyrosine kinase activity transmembrane receptor protein kinase activity catalytic activity adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding epidermal growth factor receptor activity protein binding signaling receptor binding GABA receptor binding identical protein binding protein homodimerization activity protein dimerization activity epidermal growth factor receptor binding growth factor receptor binding	protein localization protein localization to postsynaptic specialization membrane cellular localization protein localization to postsynaptic membrane protein localization to cell periphery protein localization to synapse biological regulation localization within membrane protein localization to membrane protein-containing complex localization neurotransmitter receptor localization to postsynaptic specialization membrane localization regulation of postsynaptic membrane neurotransmitter receptor levels protein localization to organelle cellular macromolecule localization protein localization protein localization to postsynaptic specialization membrane cellular localization protein localization to postsynaptic membrane protein localization to cell periphery protein localization to synapse biological regulation localization within membrane protein localization to membrane protein-containing complex localization neurotransmitter receptor localization to postsynaptic specialization membrane localization regulation of postsynaptic membrane neurotransmitter receptor levels protein localization to organelle cellular macromolecule localization macromolecule localization cellular process protein localization to postsynapse regulation of biological quality protein localization to cell junction receptor localization to synapse developmental process heart development multicellular organism development multicellular organismal process anatomical structure development animal organ development circulatory system development system development olfactory bulb interneuron differentiation head development cellular developmental process olfactory lobe development forebrain development brain development nervous system development generation of neurons neurogenesis neuron differentiation central nervous system development cell differentiation olfactory bulb development telencephalon development mammary gland epithelial cell differentiation epithelium development mammary gland development gland development tissue development epithelial cell differentiation mammary gland epithelium development cellular response to stimulus ERBB2 signaling pathway regulation of biological process ERBB4 signaling pathway regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling cell surface receptor protein tyrosine kinase signaling pathway cell communication ERBB signaling pathway signal transduction enzyme-linked receptor protein signaling pathway ERBB2-ERBB4 signaling pathway regulation of growth positive regulation of cell population proliferation regulation of cardiac muscle tissue growth regulation of developmental process developmental growth cardiac muscle cell proliferation positive regulation of biological process organ growth striated muscle tissue development positive regulation of developmental process positive regulation of cardiac muscle cell proliferation regulation of organ growth regulation of heart growth regulation of cardiac muscle cell proliferation muscle cell proliferation regulation of multicellular organismal process cardiac muscle tissue growth muscle tissue development positive regulation of developmental growth positive regulation of cellular process striated muscle cell proliferation positive regulation of heart growth heart growth regulation of multicellular organismal development cell population proliferation regulation of developmental growth cardiac muscle tissue development positive regulation of organ growth growth positive regulation of growth regulation of cell population proliferation positive regulation of cardiac muscle tissue growth positive regulation of multicellular organismal process cell migration cell motility regulation of cell motility regulation of locomotion regulation of cell migration locomotion protein phosphorylation organonitrogen compound metabolic process protein autophosphorylation phosphorylation cellular metabolic process primary metabolic process macromolecule modification phosphate-containing compound metabolic process metabolic process protein metabolic process macromolecule metabolic process protein modification process phosphorus metabolic process tissue regeneration cardiac muscle tissue regeneration regeneration cell fate commitment regulation of localization regulation of protein localization positive regulation of protein localization to cell surface protein localization to cell surface regulation of cellular localization positive regulation of protein localization regulation of protein localization to cell surface regulation of body fluid levels secretion transport establishment of localization body fluid secretion lactation cellular component organization cellular component biogenesis cell junction organization cellular component assembly cell junction assembly synapse organization cellular component organization or biogenesis synapse assembly positive regulation of cell communication positive regulation of signal transduction regulation of signal transduction intracellular signal transduction positive regulation of response to stimulus positive regulation of ERK1 and ERK2 cascade regulation of intracellular signal transduction intracellular signaling cassette regulation of signaling positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of response to stimulus MAPK cascade regulation of cell communication ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade positive regulation of signaling negative regulation of programmed cell death regulation of apoptotic process negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process apoptotic process programmed cell death regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction phosphatidylinositol 3-kinase/protein kinase B signal transduction stem cell development neural crest cell differentiation neural crest cell development cell development mesenchyme development mesenchymal cell migration stem cell differentiation ameboidal-type cell migration mesenchymal cell differentiation neural crest cell migration organelle organization mitochondrial fragmentation involved in apoptotic process apoptotic mitochondrial changes mitochondrion organization peptidyl-tyrosine modification peptidyl-amino acid modification peptidyl-tyrosine phosphorylation establishment of planar polarity involved in nephron morphogenesis establishment of planar polarity nephron morphogenesis morphogenesis of an epithelium renal system development anatomical structure morphogenesis tissue morphogenesis kidney morphogenesis establishment of tissue polarity morphogenesis of a polarized epithelium animal organ morphogenesis nephron development kidney development negative regulation of cell population proliferation positive regulation of phosphorylation positive regulation of phosphate metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of phosphate metabolic process positive regulation of macromolecule metabolic process positive regulation of protein phosphorylation tyrosine phosphorylation of STAT protein positive regulation of phosphorus metabolic process regulation of protein metabolic process regulation of cellular metabolic process regulation of phosphorus metabolic process regulation of metabolic process cell surface receptor signaling pathway via STAT regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process positive regulation of cellular metabolic process positive regulation of peptidyl-tyrosine phosphorylation positive regulation of protein modification process regulation of tyrosine phosphorylation of STAT protein regulation of peptidyl-tyrosine phosphorylation regulation of macromolecule metabolic process positive regulation of tyrosine phosphorylation of STAT protein regulation of phosphorylation cell surface receptor signaling pathway via JAK-STAT positive regulation of receptor signaling pathway via STAT positive regulation of receptor signaling pathway via JAK-STAT regulation of receptor signaling pathway via JAK-STAT regulation of receptor signaling pathway via STAT central nervous system morphogenesis positive regulation of DNA-templated transcription cellular biosynthetic process RNA metabolic process positive regulation of macromolecule biosynthetic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process positive regulation of biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process positive regulation of nucleobase-containing compound metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process positive regulation of RNA metabolic process regulation of gene expression biosynthetic process positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription positive regulation of cellular biosynthetic process cellular response to endogenous stimulus cellular response to growth factor stimulus response to endogenous stimulus cellular response to epidermal growth factor stimulus response to epidermal growth factor response to growth factor embryonic pattern specification pattern specification process embryo development mammary gland lobule development mammary gland alveolus development ERBB4-ERBB4 signaling pathway	postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane cellular anatomical entity postsynaptic density membrane synaptic membrane cell periphery postsynaptic density postsynapse neuron to neuron synapse organelle cell junction postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane cellular anatomical entity postsynaptic density membrane synaptic membrane cell periphery postsynaptic density postsynapse neuron to neuron synapse organelle cell junction postsynaptic membrane asymmetric synapse plasma membrane region intracellular anatomical structure cytoplasm cytosol presynapse presynaptic membrane basal part of cell basal plasma membrane basolateral plasma membrane glutamatergic synapse protein-containing complex receptor complex neuromuscular junction membrane-bounded organelle intracellular organelle mitochondrion intracellular membrane-bounded organelle nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen GABA-ergic synapse extracellular region mitochondrial matrix
C	Isoform 6 of Pro-neuregulin-1, membrane-bound isoform	protein tyrosine kinase activator activity enzyme regulator activity kinase activator activity enzyme activator activity molecular function activator activity molecular function regulator activity protein kinase activator activity protein kinase regulator activity kinase regulator activity protein binding binding signaling receptor binding signaling receptor regulator activity growth factor activity protein tyrosine kinase activator activity enzyme regulator activity kinase activator activity enzyme activator activity molecular function activator activity molecular function regulator activity protein kinase activator activity protein kinase regulator activity kinase regulator activity protein binding binding signaling receptor binding signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity protein tyrosine kinase binding kinase binding receptor tyrosine kinase binding enzyme binding protein kinase binding transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity molecular adaptor activity transmembrane receptor protein tyrosine kinase activator activity cell adhesion molecule binding protein-containing complex binding integrin binding cytokine activity ErbB-3 class receptor binding chemorepellent activity	developmental process animal organ development anatomical structure development regulation of biological process regulation of cellular process cellular developmental process regulation of developmental process biological regulation positive regulation of biological process regulation of cell differentiation regulation of striated muscle cell differentiation muscle cell differentiation positive regulation of muscle cell differentiation muscle structure development developmental process animal organ development anatomical structure development regulation of biological process regulation of cellular process cellular developmental process regulation of developmental process biological regulation positive regulation of biological process regulation of cell differentiation regulation of striated muscle cell differentiation muscle cell differentiation positive regulation of muscle cell differentiation muscle structure development positive regulation of developmental process regulation of muscle cell differentiation positive regulation of cell differentiation cell differentiation positive regulation of striated muscle cell differentiation cellular process striated muscle cell differentiation positive regulation of cellular process cellular response to stimulus ERBB2 signaling pathway ERBB4 signaling pathway cell surface receptor signaling pathway response to stimulus signaling cell surface receptor protein tyrosine kinase signaling pathway cell communication ERBB signaling pathway signal transduction enzyme-linked receptor protein signaling pathway ERBB2-ERBB4 signaling pathway positive regulation of phosphorylation regulation of catalytic activity regulation of transferase activity positive regulation of phosphate metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process positive regulation of macromolecule metabolic process phosphorus metabolic process protein modification process positive regulation of protein phosphorylation protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation cellular metabolic process regulation of protein metabolic process regulation of cellular metabolic process primary metabolic process regulation of molecular function positive regulation of kinase activity regulation of kinase activity activation of protein kinase activity macromolecule modification regulation of phosphorus metabolic process metabolic process macromolecule metabolic process regulation of metabolic process regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process positive regulation of cellular metabolic process positive regulation of molecular function positive regulation of protein modification process protein metabolic process activation of protein kinase B activity positive regulation of protein kinase activity organonitrogen compound metabolic process positive regulation of transferase activity positive regulation of catalytic activity regulation of protein kinase activity regulation of macromolecule metabolic process regulation of phosphorylation multicellular organismal process regulation of growth positive regulation of cell population proliferation regulation of cardiac muscle tissue growth developmental growth cardiac muscle cell proliferation organ growth striated muscle tissue development multicellular organism development positive regulation of cardiac muscle cell proliferation regulation of organ growth regulation of heart growth regulation of cardiac muscle cell proliferation muscle cell proliferation regulation of multicellular organismal process cardiac muscle tissue growth muscle tissue development positive regulation of developmental growth system development striated muscle cell proliferation positive regulation of heart growth heart development heart growth regulation of multicellular organismal development cell population proliferation regulation of developmental growth cardiac muscle tissue development positive regulation of organ growth growth tissue development circulatory system development positive regulation of growth regulation of cell population proliferation positive regulation of cardiac muscle tissue growth positive regulation of multicellular organismal process positive regulation of cellular component organization regulation of cellular component organization protein-containing complex organization positive regulation of cellular component biogenesis regulation of cellular component biogenesis cellular component organization cellular component biogenesis positive regulation of protein-containing complex assembly regulation of protein-containing complex assembly cellular component assembly protein-containing complex assembly cellular component organization or biogenesis regulation of localization regulation of transport transport secretion negative regulation of biological process negative regulation of transport establishment of localization regulation of secretion localization negative regulation of secretion cardiac muscle cell differentiation cardiocyte differentiation mammary gland development gland development ERBB2-ERBB3 signaling pathway ERBB3 signaling pathway nervous system development negative regulation of cardiac muscle cell apoptotic process muscle cell apoptotic process negative regulation of programmed cell death regulation of apoptotic process regulation of cardiac muscle cell apoptotic process regulation of muscle cell apoptotic process regulation of programmed cell death cell death cardiac muscle cell apoptotic process negative regulation of apoptotic process regulation of striated muscle cell apoptotic process striated muscle cell apoptotic process negative regulation of muscle cell apoptotic process negative regulation of cellular process negative regulation of striated muscle cell apoptotic process apoptotic process programmed cell death sequestering of metal ion maintenance of location ventricular cardiac muscle cell differentiation activation of transmembrane receptor protein tyrosine kinase activity ventricular cardiac muscle tissue morphogenesis heart morphogenesis ventricular cardiac muscle tissue development ventricular trabecula myocardium morphogenesis cardiac chamber development animal organ morphogenesis muscle organ development cardiac chamber morphogenesis muscle tissue morphogenesis anatomical structure morphogenesis tissue morphogenesis cardiac ventricle morphogenesis cardiac muscle tissue morphogenesis heart trabecula morphogenesis cardiac ventricle development trabecula morphogenesis muscle organ morphogenesis import into cell cellular localization receptor internalization postsynaptic neurotransmitter receptor internalization regulation of receptor internalization vesicle-mediated transport vesicle-mediated transport in synapse establishment of localization in cell regulation of postsynaptic neurotransmitter receptor internalization regulation of biological quality regulation of endocytosis regulation of receptor-mediated endocytosis regulation of vesicle-mediated transport protein-containing complex localization neurotransmitter receptor internalization regulation of postsynaptic membrane neurotransmitter receptor levels postsynaptic endocytosis endocytosis receptor-mediated endocytosis cellular biosynthetic process RNA metabolic process negative regulation of cellular metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of DNA-templated transcription negative regulation of metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process negative regulation of cellular biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription negative regulation of RNA metabolic process positive regulation of cell growth regulation of cell growth cell growth negative regulation of extrinsic apoptotic signaling pathway in absence of ligand signal transduction in absence of ligand negative regulation of signaling regulation of signal transduction negative regulation of cell communication extrinsic apoptotic signaling pathway negative regulation of signal transduction in absence of ligand negative regulation of extrinsic apoptotic signaling pathway negative regulation of apoptotic signaling pathway extrinsic apoptotic signaling pathway in absence of ligand regulation of signaling negative regulation of response to stimulus negative regulation of signal transduction regulation of extrinsic apoptotic signaling pathway apoptotic signaling pathway regulation of response to stimulus regulation of extrinsic apoptotic signaling pathway in absence of ligand regulation of cell communication regulation of apoptotic signaling pathway peptidyl-amino acid modification regulation of peptidyl-tyrosine autophosphorylation regulation of protein autophosphorylation positive regulation of protein autophosphorylation peptidyl-tyrosine modification positive regulation of peptidyl-tyrosine phosphorylation protein autophosphorylation regulation of peptidyl-tyrosine phosphorylation peptidyl-tyrosine autophosphorylation positive regulation of peptidyl-tyrosine autophosphorylation peptidyl-tyrosine phosphorylation positive regulation of cell communication positive regulation of signal transduction intracellular signal transduction positive regulation of response to stimulus positive regulation of ERK1 and ERK2 cascade regulation of intracellular signal transduction intracellular signaling cassette positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade MAPK cascade ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade positive regulation of signaling cell adhesion positive regulation of cell adhesion regulation of cell adhesion wound healing response to stress response to wounding cardiac muscle cell myoblast differentiation cardioblast differentiation stem cell differentiation myoblast differentiation stem cell development neural crest cell differentiation neural crest cell development cell development mesenchyme development mesenchymal cell differentiation epithelium development endothelial cell differentiation endothelium development cardiac endothelial cell differentiation endocardium development epithelial cell differentiation endocardial cell differentiation ERBB4-ERBB4 signaling pathway	membrane cellular anatomical entity synapse cell junction glutamatergic synapse extracellular region extracellular space cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane membrane-bounded organelle intracellular anatomical structure membrane cellular anatomical entity synapse cell junction glutamatergic synapse extracellular region extracellular space cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR016245	Tyrosine protein kinase, EGF/ERB/XmrK receptor	Family
B	IPR008266	Tyrosine-protein kinase, active site	Active Site
B	IPR020635	Tyrosine-protein kinase, catalytic domain	Domain
B	IPR000719	Protein kinase domain	Domain
B	IPR036941	Receptor L-domain superfamily	Homologous Superfamily
B	IPR032778	Growth factor receptor domain 4	Domain
B	IPR049328	Epidermal growth factor receptor-like, transmembrane-juxtamembrane segment	Domain
B	IPR006212	Furin-like repeat	Repeat
B	IPR000494	Receptor L-domain	Domain
B	IPR017441	Protein kinase, ATP binding site	Binding Site
B	IPR001245	Serine-threonine/tyrosine-protein kinase, catalytic domain	Domain
B	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
B	IPR006211	Furin-like cysteine-rich domain	Domain
B	IPR009030	Growth factor receptor cysteine-rich domain superfamily	Homologous Superfamily
A	IPR016245	Tyrosine protein kinase, EGF/ERB/XmrK receptor	Family
A	IPR008266	Tyrosine-protein kinase, active site	Active Site
A	IPR020635	Tyrosine-protein kinase, catalytic domain	Domain
A	IPR000719	Protein kinase domain	Domain
A	IPR036941	Receptor L-domain superfamily	Homologous Superfamily
A	IPR032778	Growth factor receptor domain 4	Domain
A	IPR049328	Epidermal growth factor receptor-like, transmembrane-juxtamembrane segment	Domain
A	IPR006212	Furin-like repeat	Repeat
A	IPR000494	Receptor L-domain	Domain
A	IPR017441	Protein kinase, ATP binding site	Binding Site
A	IPR001245	Serine-threonine/tyrosine-protein kinase, catalytic domain	Domain
A	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
A	IPR006211	Furin-like cysteine-rich domain	Domain
A	IPR009030	Growth factor receptor cysteine-rich domain superfamily	Homologous Superfamily
C	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
C	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C	IPR007110	Immunoglobulin-like domain	Domain
C	IPR003599	Immunoglobulin subtype	Domain
C	IPR040180	Neuregulin	Family
C	IPR003598	Immunoglobulin subtype 2	Domain
C	IPR000742	EGF-like domain	Domain
C	IPR013098	Immunoglobulin I-set	Domain
C	IPR018250	Neuregulin-1	Family
C	IPR002154	Neuregulin, C-terminal	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.

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8U4L

Structure of the HER2/HER4/NRG1b Heterodimer Extracellular Domain

External Resource: Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage