Annotations: 2KA3

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ka3a_	All beta proteins	TNF-like	TNF-like	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d2ka3b_	All beta proteins	TNF-like	TNF-like	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d2ka3c_	All beta proteins	TNF-like	TNF-like	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	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		e2ka3A2	A: Fusion glycoprotein F2	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T:	F:	ECOD (20:10:01)
B		e2ka3B2	A: DEATH domain	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T:	F:	ECOD (20:10:01)
C		e2ka3C2	A: DEATH domain	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T:	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.120.40	Mainly Beta	Sandwich	Jelly Rolls		CATH (4.3.0)
B	2.60.120.40	Mainly Beta	Sandwich	Jelly Rolls		CATH (4.3.0)
C	2.60.120.40	Mainly Beta	Sandwich	Jelly Rolls		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF00386	C1q domain (C1q)	C1q domain	C1q is a subunit of the C1 enzyme complex that activates the serum complement system.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	EMILIN-1	structural molecule activity extracellular matrix structural constituent extracellular matrix constituent conferring elasticity structural molecule activity conferring elasticity cell adhesion molecule binding protein-containing complex binding protein binding binding cell adhesion mediator activity integrin binding signaling receptor binding integrin binding involved in cell-matrix adhesion cell-matrix adhesion mediator activity molecular adaptor activity structural molecule activity extracellular matrix structural constituent extracellular matrix constituent conferring elasticity structural molecule activity conferring elasticity cell adhesion molecule binding protein-containing complex binding protein binding binding cell adhesion mediator activity integrin binding signaling receptor binding integrin binding involved in cell-matrix adhesion cell-matrix adhesion mediator activity molecular adaptor activity identical protein binding	cell adhesion cell-matrix adhesion cell-substrate adhesion cellular process multicellular organismal process system process circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation regulation of biosynthetic process regulation of biological process negative regulation of collagen metabolic process cell adhesion cell-matrix adhesion cell-substrate adhesion cellular process multicellular organismal process system process circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation regulation of biosynthetic process regulation of biological process negative regulation of collagen metabolic process regulation of cellular process negative regulation of metabolic process negative regulation of biological process collagen biosynthetic process regulation of collagen biosynthetic process regulation of collagen metabolic process negative regulation of collagen biosynthetic process biosynthetic process negative regulation of biosynthetic process negative regulation of cellular process metabolic process collagen metabolic process regulation of metabolic process regulation of cell-substrate adhesion positive regulation of cell adhesion regulation of cell adhesion positive regulation of biological process positive regulation of cell-substrate adhesion positive regulation of cellular 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 positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of cellular component organization positive regulation of cellular component organization positive regulation of cellular component biogenesis positive regulation of extracellular matrix organization extracellular matrix organization regulation of cellular component biogenesis cellular component organization cellular component biogenesis cellular component assembly regulation of extracellular matrix assembly positive regulation of extracellular matrix assembly cellular component organization or biogenesis regulation of extracellular matrix organization extracellular matrix assembly extracellular structure organization external encapsulating structure organization positive regulation of programmed cell death regulation of apoptotic process regulation of programmed cell death cell death positive regulation of apoptotic process apoptotic process programmed cell death cellular response to stimulus response to stimulus signaling negative regulation of signaling negative regulation of intracellular signal transduction regulation of signal transduction intracellular signal transduction negative regulation of cell communication cell communication regulation of intracellular signal transduction intracellular signaling cassette signal transduction regulation of signaling negative regulation of response to stimulus regulation of MAPK cascade negative regulation of signal transduction negative regulation of ERK1 and ERK2 cascade regulation of response to stimulus MAPK cascade regulation of cell communication ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade negative regulation of MAPK cascade cellular response to growth factor stimulus negative regulation of cellular response to growth factor stimulus cell surface receptor protein tyrosine kinase signaling pathway regulation of vascular endothelial growth factor receptor signaling pathway cellular response to endogenous stimulus negative regulation of vascular endothelial growth factor receptor signaling pathway enzyme-linked receptor protein signaling pathway cell surface receptor signaling pathway response to endogenous stimulus regulation of cellular response to growth factor stimulus vascular endothelial growth factor receptor signaling pathway response to growth factor cell adhesion mediated by integrin cell migration cell motility regulation of body fluid levels homotypic cell-cell adhesion regulation of cell activation positive regulation of cell-cell adhesion cell-cell adhesion response to stress coagulation regulation of cell-cell adhesion regulation of multicellular organismal process response to wounding wound healing regulation of homotypic cell-cell adhesion cell activation hemostasis platelet aggregation blood coagulation regulation of platelet activation regulation of platelet aggregation positive regulation of homotypic cell-cell adhesion positive regulation of platelet aggregation platelet activation cell surface receptor protein serine/threonine kinase signaling pathway regulation of transmembrane receptor protein serine/threonine kinase signaling pathway SMAD protein signal transduction regulation of SMAD protein signal transduction negative regulation of SMAD protein signal transduction negative regulation of transmembrane receptor protein serine/threonine kinase signaling pathway negative regulation of extracellular matrix organization negative regulation of cellular component organization collagen fibril organization negative regulation of collagen fibril organization regulation of collagen fibril organization developmental process heart development heart valve development animal organ development aortic valve development circulatory system development multicellular organism development anatomical structure morphogenesis heart valve morphogenesis anatomical structure development semi-lunar valve development aortic valve morphogenesis system development negative regulation of transforming growth factor beta receptor signaling pathway cellular response to transforming growth factor beta stimulus regulation of transforming growth factor beta receptor signaling pathway regulation of cellular response to transforming growth factor beta stimulus response to transforming growth factor beta transforming growth factor beta receptor signaling pathway transforming growth factor beta receptor superfamily signaling pathway negative regulation of locomotion regulation of cell motility regulation of locomotion regulation of cell migration negative regulation of cell motility negative regulation of cell migration locomotion regulation of developmental process angiogenesis regulation of vasculature development positive regulation of developmental process tube morphogenesis regulation of anatomical structure morphogenesis blood vessel development regulation of multicellular organismal development blood vessel morphogenesis tube development positive regulation of angiogenesis vasculature development positive regulation of vasculature development regulation of angiogenesis anatomical structure formation involved in morphogenesis positive regulation of multicellular organismal process regulation of defense response positive regulation of response to biotic stimulus regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms regulation of response to external stimulus response to biotic stimulus positive regulation of response to stimulus defense response to bacterium positive regulation of defense response to bacterium positive regulation of response to external stimulus regulation of response to stress response to bacterium response to external biotic stimulus regulation of defense response to bacterium defense response response to other organism response to external stimulus positive regulation of defense response negative regulation of cell activation negative regulation of multicellular organismal process negative regulation of vascular endothelial growth factor signaling pathway regulation of vascular endothelial growth factor signaling pathway regulation of cellular response to vascular endothelial growth factor stimulus vascular endothelial growth factor signaling pathway cellular response to vascular endothelial growth factor stimulus negative regulation of cellular response to vascular endothelial growth factor stimulus cell population proliferation regulation of cell population proliferation positive regulation of coagulation positive regulation of blood coagulation regulation of response to wounding regulation of coagulation positive regulation of hemostasis regulation of hemostasis positive regulation of response to wounding regulation of blood coagulation positive regulation of wound healing regulation of wound healing negative regulation of blood vessel morphogenesis negative regulation of developmental process negative regulation of angiogenesis negative regulation of vasculature development negative regulation of gene expression negative regulation of macromolecule biosynthetic process negative regulation of macromolecule metabolic process elastic fiber assembly supramolecular fiber organization negative regulation of mononuclear cell migration macrophage migration regulation of macrophage migration myeloid leukocyte migration regulation of immune system process regulation of mononuclear cell migration negative regulation of macrophage migration regulation of leukocyte migration leukocyte migration negative regulation of leukocyte migration negative regulation of immune system process immune system process mononuclear cell migration	protein-containing complex collagen trimer integrin alpha4-beta1 complex plasma membrane protein complex membrane plasma membrane membrane protein complex receptor complex cell periphery cellular anatomical structure integrin complex plasma membrane signaling receptor complex protein complex involved in cell adhesion solid phase of interstitial matrix protein-containing complex collagen trimer integrin alpha4-beta1 complex plasma membrane protein complex membrane plasma membrane membrane protein complex receptor complex cell periphery cellular anatomical structure integrin complex plasma membrane signaling receptor complex protein complex involved in cell adhesion solid phase of interstitial matrix extracellular matrix elastic fiber EMILIN complex external encapsulating structure protein complex involved in cell-matrix adhesion supramolecular fiber supramolecular polymer supramolecular complex interstitial matrix non-collagenous component of interstitial matrix extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR008160	Collagen triple helix repeat	Repeat
A, B, C	IPR008983	Tumour necrosis factor-like domain superfamily	Homologous Superfamily
A, B, C	IPR050392	Collagen/C1q domain-containing	Family
A, B, C	IPR001073	C1q domain	Domain
A, B, C	IPR011489	EMI domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C	Pharos: Q9Y6C2	adrenal cortex carcinoma malignant ependymoma osteosarcoma psoriasis gastric carcinoma malignant glioma ovarian cancer thoracic aortic aneurysm glioblastoma medulloblastoma pilocytic astrocytoma

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.