Annotations: 2OTT

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth X]	SRCR	e2ottX1	A: a+b complex topology	X: SRCR-like	H: SRCR-like (From Topology)	T: SRCR-like	F: SRCR	ECOD (1.6)
B [auth Y]	SRCR	e2ottY1	A: a+b complex topology	X: SRCR-like	H: SRCR-like (From Topology)	T: SRCR-like	F: SRCR	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth X]	3.10.250.10	Alpha Beta	Roll	Mac-2 Binding Protein	SRCR-like domain	CATH (4.3.0)
B [auth Y]	3.10.250.10	Alpha Beta	Roll	Mac-2 Binding Protein	SRCR-like domain	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
A [auth X], B [auth Y]	SRCR CD5 domain 3	1S	Homo sapiens (human)	CD5	S-LIKE-DOMAIN SRCR3	RPI	1S	IMGT (202415-0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth X], B [auth Y]	T-cell surface glycoprotein CD5	molecular transducer activity signaling receptor activity	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell death cell communication apoptotic signaling pathway cellular process signal transduction apoptotic process programmed cell death multicellular organismal process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell death cell communication apoptotic signaling pathway cellular process signal transduction apoptotic process programmed cell death multicellular organismal process regulation of leukocyte activation positive regulation of biological process regulation of cell activation positive regulation of leukocyte cell-cell adhesion lymphocyte activation leukocyte cell-cell adhesion leukocyte activation positive regulation of cell-cell adhesion positive regulation of lymphocyte activation positive regulation of cell activation cell adhesion cell-cell adhesion T cell activation positive regulation of leukocyte activation regulation of multicellular organismal process regulation of immune system process regulation of cell-cell adhesion positive regulation of immune system process positive regulation of cellular process positive regulation of T cell activation positive regulation of cell adhesion regulation of cell adhesion cell activation regulation of T cell activation immune system process lymphocyte costimulation regulation of leukocyte cell-cell adhesion positive regulation of multicellular organismal process T cell costimulation regulation of lymphocyte activation cell recognition	cell periphery plasma membrane membrane cellular anatomical entity cell surface external side of plasma membrane side of membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth X], B [auth Y]	IPR017448	SRCR-like domain	Domain
A [auth X], B [auth Y]	IPR003566	T-cell surface glycoprotein CD5	Family
A [auth X], B [auth Y]	IPR036772	SRCR-like domain superfamily	Homologous Superfamily
A [auth X], B [auth Y]	IPR001190	SRCR domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth X], B [auth Y]	Pharos: P06127	rheumatoid arthritis B-cell chronic lymphocytic leukemia autoimmune disease cutaneous lupus erythematosus leukemia osteosarcoma inflammatory bowel disease lymphoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia ulcerative colitis Crohn disease interstitial cystitis lymphoproliferative syndrome psoriasis

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.