Annotations: 1RW5

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1rw5a_	All alpha proteins	4-helical cytokines	4-helical cytokines	Long-chain cytokines	Prolactin (placental lactogen)	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	SCOP2 Family	Long-chain cytokines	8019934	4000851	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	4-helical cytokines	8032314	3001717	SCOP2 (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	Hormone_1	e1rw5A1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: Hormone_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00103	Somatotropin hormone family (Hormone_1)	Somatotropin hormone family	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Prolactin	hormone activity protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity cytokine receptor binding prolactin receptor binding	regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process cellular process positive regulation of cellular process cellular response to stimulus response to stimulus cell surface receptor signaling pathway signaling response to endogenous stimulus regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process cellular process positive regulation of cellular process cellular response to stimulus response to stimulus cell surface receptor signaling pathway signaling response to endogenous stimulus response to cytokine hormone-mediated signaling pathway cytokine-mediated signaling pathway cell communication response to peptide cellular response to endogenous stimulus cellular response to chemical stimulus response to hormone response to chemical cellular response to cytokine stimulus signal transduction prolactin signaling pathway cellular response to hormone stimulus positive regulation of cell communication positive regulation of signal transduction positive regulation of canonical NF-kappaB signal transduction regulation of signal transduction intracellular signal transduction positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette regulation of signaling positive regulation of intracellular signal transduction canonical NF-kappaB signal transduction regulation of response to stimulus regulation of cell communication regulation of canonical NF-kappaB signal transduction positive regulation of signaling multi-multicellular organism process multicellular organismal process reproductive process female pregnancy multi-organism reproductive process cell surface receptor signaling pathway via 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 cell surface receptor signaling pathway via JAK-STAT developmental process regulation of body fluid levels secretion transport mammary gland development gland development animal organ development establishment of localization body fluid secretion localization anatomical structure development lactation regulation of biological quality response to nutrient levels regulation of developmental process negative regulation of biological process angiogenesis regulation of vasculature development multicellular organism development tube morphogenesis regulation of multicellular organismal process regulation of anatomical structure morphogenesis system development blood vessel development regulation of multicellular organismal development blood vessel morphogenesis tube development negative regulation of blood vessel morphogenesis negative regulation of developmental process negative regulation of angiogenesis vasculature development circulatory system development negative regulation of vasculature development anatomical structure morphogenesis regulation of angiogenesis anatomical structure formation involved in morphogenesis negative regulation of multicellular organismal process negative regulation of cell population proliferation endothelial cell proliferation negative regulation of endothelial cell proliferation regulation of endothelial cell proliferation negative regulation of cellular process regulation of epithelial cell proliferation epithelial cell proliferation negative regulation of epithelial cell proliferation positive regulation of DNA-templated transcription RNA metabolic process positive regulation of miRNA transcription positive regulation of miRNA metabolic process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process positive regulation of metabolic process regulation of RNA metabolic process miRNA transcription positive regulation of biosynthetic process regulation of miRNA metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process miRNA metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process positive regulation of nucleobase-containing compound metabolic process primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process regulation of gene expression biosynthetic process positive regulation of RNA biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process regulation of miRNA transcription regulation of localization positive regulation of developmental process positive regulation of secretion regulation of transport regulation of secretion positive regulation of transport positive regulation of lactation regulation of lactation positive regulation of multicellular organismal process	cellular anatomical structure extracellular region extracellular space membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen intracellular organelle cytoplasmic vesicle organelle lumen cellular anatomical structure extracellular region extracellular space membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen intracellular organelle cytoplasmic vesicle organelle lumen organelle cytoplasm endosome lumen vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001400	Somatotropin/prolactin	Family
A	IPR018116	Somatotropin hormone, conserved site	Conserved Site
A	IPR009079	Four-helical cytokine-like, core	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P01236	hypopituitarism prolactin-producing pituitary gland adenoma acquired hyperprolactinemia hypogonadism amenorrhea adenoma hypoactive sexual desire disorder Catalepsy cocaine dependence infant gynecomastia pituitary cancer Leydig cell tumor follicular thyroid adenoma puerperal disorder microcystic adenoma hypopituitarism prolactin-producing pituitary gland adenoma acquired hyperprolactinemia hypogonadism amenorrhea adenoma hypoactive sexual desire disorder Catalepsy cocaine dependence infant gynecomastia pituitary cancer Leydig cell tumor follicular thyroid adenoma puerperal disorder microcystic adenoma tubular adenocarcinoma papillary adenoma pituitary adenocarcinoma pituitary gland adenoma endometriosis granular cell carcinoma gynecomastia Sheehan syndrome substance withdrawal syndrome basal ganglia disease cocaine abuse physiological sexual disorder congestive heart failure adenocarcinoma erectile dysfunction female infertility prostatic adenoma galactorrhea anemia growth hormone-producing pituitary gland adenoma systemic lupus erythematosus hyperaldosteronism benign prostatic hyperplasia hypogonadotropic hypogonadism hypotensive disorder cribriform carcinoma large cell medulloblastoma polycystic ovary syndrome glioblastoma mammary neoplasms, animal heart failure hyperandrogenism phobic disorder hypothyroidism cribriform carcinoma of breast acromegaly malignant mesothelioma autism neuroblastoma hyperprolactinemia parkinsonian disorder inborn carbohydrate metabolic disorder pituitary apoplexy infertility disorder pituitary tumor medulloblastoma schizophrenia autosomal recessive juvenile Parkinson disease 2

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.