Annotations: 1O91

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1o91a_	All beta proteins	TNF-like	TNF-like	TNF-like	Collagen NC1 trimerisation domain	HOUSE MOUSE (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B	d1o91b_	All beta proteins	TNF-like	TNF-like	TNF-like	Collagen NC1 trimerisation domain	HOUSE MOUSE (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
C	d1o91c_	All beta proteins	TNF-like	TNF-like	TNF-like	Collagen NC1 trimerisation domain	HOUSE MOUSE (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	TNF-like	8024964	4000294	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	TNF-like	8037343	3000061	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	TNF-like	8037343	3000061	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	TNF-like	8037343	3000061	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	PF00386	e1o91A1	A: beta sandwiches	X: jelly-roll	H: TNF-like (From Topology)	T: TNF-like	F: PF00386	ECOD (1.6)
B	PF00386	e1o91B1	A: beta sandwiches	X: jelly-roll	H: TNF-like (From Topology)	T: TNF-like	F: PF00386	ECOD (1.6)
C	PF00386	e1o91C1	A: beta sandwiches	X: jelly-roll	H: TNF-like (From Topology)	T: TNF-like	F: PF00386	ECOD (1.6)

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	COLLAGEN ALPHA 1(VIII) CHAIN	structural molecule activity extracellular matrix structural constituent extracellular matrix structural constituent conferring tensile strength	cell population proliferation endothelial cell proliferation cellular process epithelial cell proliferation developmental process multicellular organismal process blood vessel morphogenesis tube development angiogenesis vasculature development circulatory system development multicellular organism development anatomical structure morphogenesis tube morphogenesis cell population proliferation endothelial cell proliferation cellular process epithelial cell proliferation developmental process multicellular organismal process blood vessel morphogenesis tube development angiogenesis vasculature development circulatory system development multicellular organism development anatomical structure morphogenesis tube morphogenesis anatomical structure development anatomical structure formation involved in morphogenesis blood vessel development system development camera-type eye morphogenesis sensory organ development eye development animal organ development visual system development eye morphogenesis sensory organ morphogenesis camera-type eye development animal organ morphogenesis sensory system development cell adhesion regulation of biological process regulation of cellular process regulation of cell-substrate adhesion positive regulation of cell adhesion regulation of cell adhesion biological regulation positive regulation of biological process cell-substrate adhesion positive regulation of cell-substrate adhesion positive regulation of cellular process formation of primary germ layer cellular developmental process embryonic morphogenesis tissue development embryo development gastrulation endoderm development cell differentiation endoderm formation endodermal cell differentiation cellular component organization extracellular matrix organization cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization	protein-containing complex collagen trimer basement membrane cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix cellular anatomical entity extracellular region extracellular space

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	IPR001073	C1q domain	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.