Annotations: 1HAF

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1hafa_	Small proteins	Knottins (small inhibitors, toxins, lectins)	EGF/Laminin	EGF-type module	Heregulin-alpha, EGF-like domain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	EGF/Laminin-like	8038337	3000412	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	EGF	e1hafA1	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: EGF	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.10.25.10	Mainly Beta	Ribbon	Laminin	Laminin	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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
A	HEREGULIN-ALPHA	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 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
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR003599	Immunoglobulin domain subtype	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR040180	Neuregulin	Family
A	IPR003598	Immunoglobulin subtype 2	Domain
A	IPR000742	EGF-like domain	Domain
A	IPR013098	Immunoglobulin I-set	Domain
A	IPR018250	Neuregulin-1	Family
A	IPR002154	Neuregulin, C-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q02297	Hirschsprung disease congestive heart failure schizophrenia polycystic ovary syndrome amphetamine abuse gastric ulcer Neoplasm Invasiveness lung cancer breast cancer contact dermatitis juvenile idiopathic arthritis lung adenocarcinoma breast carcinoma exocrine pancreatic carcinoma nephrosclerosis Hirschsprung disease congestive heart failure schizophrenia polycystic ovary syndrome amphetamine abuse gastric ulcer Neoplasm Invasiveness lung cancer breast cancer contact dermatitis juvenile idiopathic arthritis lung adenocarcinoma breast carcinoma exocrine pancreatic carcinoma nephrosclerosis osteosarcoma intestinal disease pilocytic astrocytoma astrocytic tumor lung benign neoplasm bowel dysfunction malignant colon neoplasm tuberculosis cannabis dependence malignant mesothelioma malignant pancreatic neoplasm depressive disorder movement disorder heart failure non-small cell lung carcinoma hypothyroidism pituitary cancer atypical teratoid rhabdoid tumor thyroid gland carcinoma malignant ependymoma type 2 diabetes mellitus medulloblastoma glioblastoma oligodendroglioma interstitial cystitis large cell medulloblastoma bipolar disorder thyroid gland papillary carcinoma malignant glioma

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 R01GM157729.