Annotations: 5MY6

Crystal structure of a HER2-Nb complex

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d5my6a1	Alpha and beta proteins (a/b)	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	L domain-like	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d5my6a2	Small proteins	Knottins (small inhibitors, toxins, lectins)	Growth factor receptor domain	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d5my6b1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	Camel (Camelus dromedarius ) [TaxId: 9838 ],	SCOPe (2.08)
B	d5my6b2	Artifacts	Tags	Tags	Tags	N-terminal Tags	Camel (Camelus dromedarius ) [TaxId: 9838 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Carb_anhydrase	e5my6A1	A: alpha arrays	X: CRISPR-associated protein Cse2	H: CRISPR-associated protein Cse2	T: CRISPR-associated protein Cse2	F: Carb_anhydrase	ECOD (v295.2)
B	Carb_anhydrase	e5my6B1	A: alpha arrays	X: CRISPR-associated protein Cse2	H: CRISPR-associated protein Cse2	T: CRISPR-associated protein Cse2	F: Carb_anhydrase	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.10.220.10	Mainly Beta	Ribbon	Hormone Receptor, Insulin-like Growth Factor Receptor 1	Chain A domain 2	CATH (utative)
A	3.80.20.20	Alpha Beta	Alpha-Beta Horseshoe	24 nucleotide stem-loop, u2 snrnp hairpin iv. U2 a'	Chain A	CATH (utative)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV1	-	receptor tyrosine-protein kinase erbb-2	SAbDab (2026-10-16)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	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 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 to postsynaptic specialization membrane protein localization to postsynaptic membrane protein localization to cell periphery cellular localization 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 macromolecule localization protein localization to organelle protein localization to postsynaptic specialization membrane protein localization to postsynaptic membrane protein localization to cell periphery cellular localization 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 macromolecule localization protein localization to organelle cellular process protein localization to postsynapse intracellular protein localization regulation of biological quality protein localization to cell junction receptor localization to synapse multicellular organismal process regulation of developmental process angiogenesis regulation of vasculature development multicellular organism development tube morphogenesis anatomical structure development regulation of multicellular organismal process regulation of anatomical structure morphogenesis blood vessel development system development developmental process regulation of multicellular organismal development regulation of biological process blood vessel morphogenesis tube development vasculature development circulatory system development anatomical structure morphogenesis regulation of angiogenesis anatomical structure formation involved in morphogenesis animal gross anatomical part developmental process 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 cell population proliferation ERBB2-ERBB3 signaling pathway ERBB3 signaling pathway positive regulation of cell communication positive regulation of signal transduction positive regulation of biological process regulation of signal transduction intracellular signal transduction positive regulation of response to stimulus positive regulation of JNK cascade regulation of intracellular signal transduction JNK cascade intracellular signaling cassette positive regulation of cellular process regulation of signaling positive regulation of MAPK cascade regulation of JNK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of response to stimulus MAPK cascade regulation of cell communication positive regulation of signaling epidermal growth factor receptor signaling pathway protein phosphorylation phosphorylation macromolecule modification phosphate-containing compound metabolic process metabolic process primary metabolic process protein metabolic process macromolecule metabolic process protein modification process ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade ERBB2-EGFR signaling pathway regulation of localization establishment of protein localization regulation of protein localization protein targeting positive regulation of establishment of protein localization regulation of protein targeting to membrane establishment of protein localization to membrane regulation of establishment of protein localization establishment of localization protein targeting to membrane regulation of cellular localization regulation of protein targeting 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 phosphatidylinositol 3-kinase/protein kinase B signal transduction 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 cellular developmental process peripheral nervous system development cell development nervous system development glial cell development neurogenesis Schwann cell development gliogenesis glial cell differentiation cell differentiation Schwann cell differentiation small GTPase-mediated signal transduction regulation of small GTPase mediated signal transduction Rho protein 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 cell population proliferation positive regulation of epithelial cell proliferation regulation of cell population proliferation regulation of epithelial cell proliferation epithelial cell proliferation generation of neurons neuron differentiation cell adhesion positive regulation of cell adhesion regulation of cell adhesion positive regulation of protein metabolic process positive regulation of translation protein biosynthetic 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 macromolecule metabolic process gene expression translation macromolecule 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 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 positive regulation of protein phosphorylation positive regulation of MAP kinase activity regulation of molecular function positive regulation of kinase activity regulation of kinase activity regulation of protein serine/threonine kinase activity 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 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 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 cellular response to epidermal growth factor stimulus response to epidermal growth factor regulation of microtubule-based process microtubule-based process	cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane intracellular anatomical structure cytoplasm cytosol protein-containing complex cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane intracellular anatomical structure cytoplasm cytosol protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex signaling receptor complex ERBB3:ERBB2 complex presynapse presynaptic 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
B	Nanobody 2Rs15d	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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
A	IPR050122	Receptor Tyrosine Kinase	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: P04626	lung cancer gastric cancer ovarian cancer Lymphatic Metastasis cholangiocarcinoma prostate cancer medulloblastoma invasive ductal breast carcinoma nasopharyngeal carcinoma breast carcinoma malignant glioma papilloma renal cell carcinoma childhood medulloblastoma head and neck cancer lung cancer gastric cancer ovarian cancer Lymphatic Metastasis cholangiocarcinoma prostate cancer medulloblastoma invasive ductal breast carcinoma nasopharyngeal carcinoma breast carcinoma malignant glioma papilloma renal cell carcinoma childhood medulloblastoma head and neck cancer adenocarcinoma adult medulloblastoma intrahepatic cholangiocarcinoma mixed glioma ductal breast carcinoma in situ ulcerative colitis breast cancer neuroblastoma papillary renal cell carcinoma glioblastoma collecting duct carcinoma glioma susceptibility 1 melanotic medulloblastoma sarcomatoid renal cell carcinoma skin basal cell carcinoma squamous papilloma lung carcinoma urinary bladder cancer gallbladder cancer malignant pancreatic neoplasm chromophobe renal cell carcinoma glioma granular cell carcinoma hereditary diffuse gastric adenocarcinoma medullomyoblastoma with myogenic differentiation tubular adenocarcinoma esophageal cancer malignant colon neoplasm ovarian carcinoma gastric carcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia clear cell renal carcinoma papillomatosis mammary neoplasms, animal colonic neoplasm primary biliary cholangitis marginal zone lymphoma melanoma Crohn disease sarcoma astrocytoma (excluding glioblastoma) liver disease benign colon neoplasm neoplasm of esophagus skin pigmented basal cell carcinoma subependymoma biliary tract neoplasm ependymoma malignant ependymoma non-small cell lung carcinoma carcinoma ovarian neoplasm gastric neoplasm peripheral nervous system disease colorectal adenocarcinoma head and neck carcinoma cribriform carcinoma renal carcinoma inflammatory bowel disease desmoplastic/nodular medulloblastoma atopic eczema lung adenocarcinoma benign neoplasm of stomach systemic lupus erythematosus bipolar disorder lymphoma neutropenia cancer pancreatic ductal adenocarcinoma colonic disease peripheral neuropathy head and neck neoplasm colorectal cancer cribriform carcinoma of breast interstitial cystitis digestive system cancer leukemia atypical teratoid rhabdoid tumor skin disease stomach carcinoma in situ lung benign neoplasm bile duct cancer endometriosis breast adenocarcinoma breast fibroadenoma gallbladder neoplasm