Annotations: 1B3J

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1b3ja1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Class I MHC homolog, alpha-3 domain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1b3ja2	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	MHC antigen-recognition domain	Class I MHC homolog	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	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054641	3000071	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	MHC antigen-recognition domain	8033416	3000521	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	Copper-bind	e1b3jA1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.1)
A	MHC_I_3	e1b3jA2	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: MHC_I_3	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.500.10	Alpha Beta	2-Layer Sandwich	Murine Class I Major Histocompatibility Complex, H2-DB	Chain A, domain 1	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	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	MICA	I-ALPHA-LIKE	Homo sapiens (human)	MICA01, MICA65	G-DOMAIN G-ALPHA1-LIKE, G-DOMAIN G-ALPHA2-LIKE, C-LIKE-DOMAIN C-LIKE	RPI	MH1LIKE-ALPHA-LIKE[3D]	IMGT (202613-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00129	Class I Histocompatibility antigen, domains alpha 1 and 2 (MHC_I)	Class I Histocompatibility antigen, domains alpha 1 and 2		Domain
A	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	MHC CLASS I HOMOLOG MIC-A	molecular function activator activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity natural killer cell lectin-like receptor binding protein binding binding signaling receptor binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process multicellular organismal process regulation of cellular process regulation of leukocyte activation negative regulation of biological process regulation of cell activation lymphocyte activation negative regulation of lymphocyte activation negative regulation of natural killer cell activation cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process multicellular organismal process regulation of cellular process regulation of leukocyte activation negative regulation of biological process regulation of cell activation lymphocyte activation negative regulation of lymphocyte activation negative regulation of natural killer cell activation leukocyte activation negative regulation of cellular process regulation of immune system process regulation of multicellular organismal process regulation of natural killer cell activation regulation of biological process cell activation biological regulation natural killer cell activation negative regulation of cell activation negative regulation of immune system process immune system process negative regulation of multicellular organismal process negative regulation of leukocyte activation regulation of lymphocyte activation immune response gamma-delta T cell activation T cell activation adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains T cell mediated cytotoxicity lymphocyte mediated immunity T cell mediated immunity leukocyte mediated cytotoxicity adaptive immune response immune effector process leukocyte mediated immunity cell killing defense response to bacterium biological process involved in interspecies interaction between organisms response to other organism defense response response to bacterium response to external stimulus response to external biotic stimulus response to biotic stimulus regulation of immune effector process negative regulation of lymphocyte mediated immunity negative regulation of natural killer cell mediated immunity natural killer cell mediated immunity regulation of natural killer cell mediated immunity regulation of innate immune response negative regulation of immune response negative regulation of immune effector process regulation of leukocyte mediated immunity regulation of response to stimulus defense response to other organism negative regulation of response to external stimulus negative regulation of defense response natural killer cell mediated cytotoxicity regulation of immune response regulation of cell killing negative regulation of natural killer cell mediated cytotoxicity regulation of defense response regulation of response to biotic stimulus regulation of natural killer cell mediated cytotoxicity regulation of response to external stimulus negative regulation of response to biotic stimulus regulation of response to stress negative regulation of leukocyte mediated cytotoxicity innate immune response negative regulation of cell killing negative regulation of response to stimulus regulation of leukocyte mediated cytotoxicity defense response to symbiont regulation of lymphocyte mediated immunity negative regulation of leukocyte mediated immunity negative regulation of innate immune response disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism response to tumor cell immune response to tumor cell defense response to virus response to virus response to heat response to abiotic stimulus response to temperature stimulus	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR050208	Antigen-presenting and immune regulatory MHC class I-related	Family
A	IPR003597	Immunoglobulin C1-set	Domain
A	IPR011161	MHC class I-like antigen recognition-like	Domain
A	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A	IPR037055	MHC class I-like antigen recognition-like superfamily	Homologous Superfamily
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR007110	Immunoglobulin-like domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q29983	coronary aneurysm oral submucous fibrosis idiopathic pulmonary fibrosis acute interstitial pneumonia idiopathic interstitial pneumonia Liver carcinoma medulloblastoma ovarian cancer subependymal giant cell astrocytoma alopecia areata lung cancer psoriasis 1, susceptibility to ankylosing spondylitis hepatocellular carcinoma large cell medulloblastoma coronary aneurysm oral submucous fibrosis idiopathic pulmonary fibrosis acute interstitial pneumonia idiopathic interstitial pneumonia Liver carcinoma medulloblastoma ovarian cancer subependymal giant cell astrocytoma alopecia areata lung cancer psoriasis 1, susceptibility to ankylosing spondylitis hepatocellular carcinoma large cell medulloblastoma lung carcinoma osteosarcoma psoriatic arthritis

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.