Annotations: 1KHX

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1khxa_	All beta proteins	SMAD/FHA domain	SMAD/FHA domain	SMAD domain	Smad2 MH2 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	SCOP2 Family	SMAD domain	8025882	4002600	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	SMAD/FHA domain-like	8038261	3000137	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	MH2	e1khxA1	A: beta sandwiches	X: SMAD/FHA domain (From Topology)	H: SMAD/FHA domain (From Topology)	T: SMAD/FHA domain	F: MH2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.200.10	Mainly Beta	Sandwich	Tumour Suppressor Smad4		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF03166	MH2 domain (MH2)	MH2 domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Smad2	SMAD binding protein binding binding R-SMAD binding transforming growth factor beta receptor binding signaling receptor binding type I transforming growth factor beta receptor binding cytokine receptor binding co-SMAD binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity DNA binding sequence-specific DNA binding SMAD binding protein binding binding R-SMAD binding transforming growth factor beta receptor binding signaling receptor binding type I transforming growth factor beta receptor binding cytokine receptor binding co-SMAD binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding double-stranded DNA binding nucleic acid binding cis-regulatory region sequence-specific DNA binding transcription regulatory region nucleic acid binding cytoskeletal protein binding tau protein binding I-SMAD binding phosphatase binding enzyme binding ubiquitin protein ligase binding ubiquitin-like protein ligase binding DNA-binding transcription activator activity, RNA polymerase II-specific DNA-binding transcription activator activity cation binding ion binding metal ion binding small molecule binding identical protein binding transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding DNA-binding transcription factor binding RNA polymerase II transcription regulatory region sequence-specific DNA binding RNA polymerase II cis-regulatory region sequence-specific DNA binding chromatin binding disordered domain specific binding protein domain specific binding	developmental process multicellular organismal process digestive system development foregut morphogenesis tube development embryonic morphogenesis embryo development digestive tract development multicellular organism development anatomical structure morphogenesis tube morphogenesis embryonic foregut morphogenesis digestive tract morphogenesis anatomical structure development developmental process multicellular organismal process digestive system development foregut morphogenesis tube development embryonic morphogenesis embryo development digestive tract development multicellular organism development anatomical structure morphogenesis tube morphogenesis embryonic foregut morphogenesis digestive tract morphogenesis anatomical structure development system development mesoderm morphogenesis mesenchyme morphogenesis animal organ development mesenchyme development tissue development tissue morphogenesis paraxial mesoderm development animal organ morphogenesis paraxial mesoderm morphogenesis mesoderm development regulation of biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process cellular process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular process embryonic pattern specification dorsal/ventral axis specification pattern specification process regionalization embryonic axis specification dorsal/ventral pattern formation zygotic specification of dorsal/ventral axis axis specification cell population proliferation response to sterol response to stimulus response to lipid response to alcohol response to chemical response to oxygen-containing compound response to cholesterol RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process embryo development ending in birth or egg hatching chordate embryonic development in utero embryonic development regulation of primary metabolic process regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of DNA-templated transcription secondary palate development roof of mouth development cellular response to stimulus signaling cell communication signal transduction involved in regulation of gene expression signal transduction cellular developmental process cell differentiation cell fate commitment positive regulation of DNA-templated transcription transcription by RNA polymerase II regulation of transcription by RNA polymerase II positive regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process protein localization establishment of protein localization cellular localization nitrogen compound transport transport hormone secretion protein localization to extracellular region peptide secretion localization secretion by cell amide transport signal release cellular macromolecule localization regulation of biological quality secretion regulation of hormone levels establishment of protein localization to extracellular region cell-cell signaling export from cell protein secretion establishment of localization peptide transport protein transport peptide hormone secretion macromolecule localization hormone transport insulin secretion cellular response to growth factor stimulus cell surface receptor protein serine/threonine kinase signaling pathway cell surface receptor signaling pathway cellular response to transforming growth factor beta stimulus response to endogenous stimulus cellular response to endogenous stimulus response to transforming growth factor beta transforming growth factor beta receptor signaling pathway response to growth factor transforming growth factor beta receptor superfamily signaling pathway enzyme-linked receptor protein signaling pathway formation of primary germ layer gastrulation anatomical structure formation involved in morphogenesis mesoderm formation negative regulation of biological process negative regulation of RNA biosynthetic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process negative regulation of macromolecule metabolic process negative regulation of DNA-templated transcription negative regulation of metabolic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of RNA metabolic process heart development epithelium development circulatory system development pericardium development activin receptor signaling pathway nodal signaling pathway developmental growth growth organ growth regulation of molecular function regulation of binding regulation of transmembrane receptor protein serine/threonine kinase signaling pathway regulation of signal transduction regulation of transforming growth factor beta receptor signaling pathway regulation of signaling regulation of cellular response to transforming growth factor beta stimulus regulation of cellular response to growth factor stimulus regulation of response to stimulus regulation of cell communication regulation of epithelial to mesenchymal transition regulation of developmental process positive regulation of epithelial to mesenchymal transition regulation of cell differentiation positive regulation of developmental process positive regulation of cell differentiation regulation of multicellular organismal process epithelial to mesenchymal transition positive regulation of multicellular organismal process mesenchymal cell differentiation homeostatic process cellular response to glucose stimulus intracellular glucose homeostasis cellular response to oxygen-containing compound response to hexose cellular response to carbohydrate stimulus cellular response to chemical stimulus cellular homeostasis response to monosaccharide response to carbohydrate chemical homeostasis response to glucose glucose homeostasis carbohydrate homeostasis cellular response to hexose stimulus intracellular chemical homeostasis cellular response to monosaccharide stimulus embryonic organ morphogenesis embryonic cranial skeleton morphogenesis skeletal system development cranial skeletal system development embryonic skeletal system development skeletal system morphogenesis embryonic organ development embryonic skeletal system morphogenesis respiratory tube development lung development respiratory system development positive regulation of cell communication positive regulation of signal transduction positive regulation of BMP signaling pathway positive regulation of response to stimulus BMP signaling pathway cellular response to BMP stimulus regulation of BMP signaling pathway positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway response to BMP positive regulation of signaling heart valve development aortic valve development heart valve morphogenesis semi-lunar valve development aortic valve morphogenesis ureteric bud development mesonephric epithelium development kidney epithelium development mesonephros development renal system development kidney development mesonephric tubule development pancreas development endocardial cushion morphogenesis heart morphogenesis endocardial cushion development pulmonary valve morphogenesis pulmonary valve development intracellular signal transduction SMAD protein signal transduction intracellular signaling cassette adrenal gland development endocrine system development gland development negative regulation of cell population proliferation regulation of cell population proliferation RNA processing regulatory ncRNA processing regulatory ncRNA-mediated gene silencing primary miRNA processing negative regulation of gene expression miRNA processing endoderm development endoderm formation epithelial cell differentiation neuroepithelial cell differentiation odontoblast differentiation columnar/cuboidal epithelial cell differentiation lateral mesoderm development determination of left/right asymmetry in lateral mesoderm determination of bilateral symmetry determination of left/right symmetry left/right pattern formation specification of symmetry ossification negative regulation of multicellular organismal process regulation of ossification negative regulation of ossification post-embryonic development anterior/posterior pattern specification	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex transcription regulator complex RNA polymerase II transcription regulator complex membrane-bounded organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle activin responsive factor complex intracellular organelle organelle cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex transcription regulator complex RNA polymerase II transcription regulator complex membrane-bounded organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle activin responsive factor complex intracellular organelle organelle membraneless organelle intracellular membraneless organelle chromatin chromosome heteromeric SMAD protein complex SMAD protein complex membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen homomeric SMAD protein complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036578	SMAD MH1 domain superfamily	Homologous Superfamily
A	IPR017855	SMAD-like domain superfamily	Homologous Superfamily
A	IPR013019	MAD homology, MH1	Domain
A	IPR013790	Dwarfin	Family
A	IPR003619	MAD homology 1, Dwarfin-type	Domain
A	IPR008984	SMAD/FHA domain superfamily	Homologous Superfamily
A	IPR001132	SMAD domain, Dwarfin-type	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q15796	Liver Cirrhosis, Experimental acromicric dysplasia lymphoplasmacytic lymphoma ovarian cancer primitive neuroectodermal tumor subependymal giant cell astrocytoma cancer colorectal cancer connective tissue disease hepatitis kidney disease lung cancer Marfan syndrome pituitary cancer psoriasis Liver Cirrhosis, Experimental acromicric dysplasia lymphoplasmacytic lymphoma ovarian cancer primitive neuroectodermal tumor subependymal giant cell astrocytoma cancer colorectal cancer connective tissue disease hepatitis kidney disease lung cancer Marfan syndrome pituitary cancer psoriasis thoracic aortic aneurysm amyotrophic lateral sclerosis colorectal carcinoma dermatomyositis lung disease medulloblastoma plasma cell myeloma right atrial isomerism breast cancer geleophysic dysplasia holoprosencephaly

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A	SEP	Parent Component: SER RESID: AA0037 PSI-MOD : O-phospho-L-serine MOD:00046

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.