Annotations: 22KK

Cryo-EM structure of the BTNL3-BTNL8-TCR complex

External Resource: Annotation

Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth C], D	PF00622	SPRY domain (SPRY)	SPRY domain	SPRY Domain is named from SPla and the RYanodine Receptor and it is found in many eukaryotic proteins with a wide range of functions. It is a protein-interaction module involved in many important signalling pathways like RNA processing, regulation of ...	SPRY Domain is named from SPla and the RYanodine Receptor and it is found in many eukaryotic proteins with a wide range of functions. It is a protein-interaction module involved in many important signalling pathways like RNA processing, regulation of histone H3 methylation, innate immunity or embryonic development [1,2,3,4]. It can be divided into 11 subfamilies based on amino acid sequence similarity or the presence of additional protein domains. The greater SPRY family is divided into the SPRY/B30.2 (which contains a PRY extension at the N-terminal) and SPRY-only sub-families which are preceded by a subdomain that is structurally similar to the PRY region [2]. SPRY/B30.2 structures revealed a bent beta-sandwich fold comprised of two beta-sheets. Distant homologues are domains in butyrophilin/ marenostrin/pyrin [1].	Domain
B [auth C], D	PF07686	Immunoglobulin V-set domain (V-set)	Immunoglobulin V-set domain	This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.	Domain
B [auth C], D	PF22705	Butyrophilin subfamily 3 member A2-like, Ig-C domain (C2-set_3)	Butyrophilin subfamily 3 member A2-like, Ig-C domain	This domain is found in human Butyrophilin subfamily 3 member A2 (BTN3A2), a protein that plays a role in T-cell responses in the adaptive immune response. BTN3A2 shows two extracellular domains: an N-terminal Ig-V like domain (Pfam:PF07686) and a C- ...	This domain is found in human Butyrophilin subfamily 3 member A2 (BTN3A2), a protein that plays a role in T-cell responses in the adaptive immune response. BTN3A2 shows two extracellular domains: an N-terminal Ig-V like domain (Pfam:PF07686) and a C-terminal Ig-C type domain that is located in the centre of the protein sequence [6].	Domain
B [auth C], D	PF13765	SPRY-associated domain (PRY)	SPRY-associated domain	PRY is a 50-60 amino acids domain associated with SPRY domains, adjacent to its N-terminal. PRY and SPRY domains are structurally very similar and consist of a beta sandwich fold [1,2,3]. Distant homologues are domains in butyrophilin/marenostrin/py ...	PRY is a 50-60 amino acids domain associated with SPRY domains, adjacent to its N-terminal. PRY and SPRY domains are structurally very similar and consist of a beta sandwich fold [1,2,3]. Distant homologues are domains in butyrophilin/marenostrin/pyrin, evolutionarily more ancient than SPRY/B30.2 counterpart.	Domain
A [auth B], C [auth A]	PF00622	SPRY domain (SPRY)	SPRY domain	SPRY Domain is named from SPla and the RYanodine Receptor and it is found in many eukaryotic proteins with a wide range of functions. It is a protein-interaction module involved in many important signalling pathways like RNA processing, regulation of ...	SPRY Domain is named from SPla and the RYanodine Receptor and it is found in many eukaryotic proteins with a wide range of functions. It is a protein-interaction module involved in many important signalling pathways like RNA processing, regulation of histone H3 methylation, innate immunity or embryonic development [1,2,3,4]. It can be divided into 11 subfamilies based on amino acid sequence similarity or the presence of additional protein domains. The greater SPRY family is divided into the SPRY/B30.2 (which contains a PRY extension at the N-terminal) and SPRY-only sub-families which are preceded by a subdomain that is structurally similar to the PRY region [2]. SPRY/B30.2 structures revealed a bent beta-sandwich fold comprised of two beta-sheets. Distant homologues are domains in butyrophilin/ marenostrin/pyrin [1].	Domain
A [auth B], C [auth A]	PF07686	Immunoglobulin V-set domain (V-set)	Immunoglobulin V-set domain	This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.	Domain
A [auth B], C [auth A]	PF22705	Butyrophilin subfamily 3 member A2-like, Ig-C domain (C2-set_3)	Butyrophilin subfamily 3 member A2-like, Ig-C domain	This domain is found in human Butyrophilin subfamily 3 member A2 (BTN3A2), a protein that plays a role in T-cell responses in the adaptive immune response. BTN3A2 shows two extracellular domains: an N-terminal Ig-V like domain (Pfam:PF07686) and a C- ...	This domain is found in human Butyrophilin subfamily 3 member A2 (BTN3A2), a protein that plays a role in T-cell responses in the adaptive immune response. BTN3A2 shows two extracellular domains: an N-terminal Ig-V like domain (Pfam:PF07686) and a C-terminal Ig-C type domain that is located in the centre of the protein sequence [6].	Domain
A [auth B], C [auth A]	PF13765	SPRY-associated domain (PRY)	SPRY-associated domain	PRY is a 50-60 amino acids domain associated with SPRY domains, adjacent to its N-terminal. PRY and SPRY domains are structurally very similar and consist of a beta sandwich fold [1,2,3]. Distant homologues are domains in butyrophilin/marenostrin/py ...	PRY is a 50-60 amino acids domain associated with SPRY domains, adjacent to its N-terminal. PRY and SPRY domains are structurally very similar and consist of a beta sandwich fold [1,2,3]. Distant homologues are domains in butyrophilin/marenostrin/pyrin, evolutionarily more ancient than SPRY/B30.2 counterpart.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
F [auth H], H [auth J]	TCR	-	-	-
E [auth G], G [auth I]	TCR	-	-	-
B [auth C], D	Butyrophilin-like protein 8	protein binding binding signaling receptor binding	developmental process extrathymic T cell selection multicellular organismal process cellular developmental process hemopoiesis cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation extrathymic T cell differentiation leukocyte activation T cell activation immune system process cell differentiation developmental process extrathymic T cell selection multicellular organismal process cellular developmental process hemopoiesis cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation extrathymic T cell differentiation leukocyte activation T cell activation immune system process cell differentiation anatomical structure development T cell differentiation cellular process T cell selection leukocyte differentiation cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process response to stimulus signaling positive regulation of biological process cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process regulation of biological process cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway immune response biological regulation T cell receptor signaling pathway regulation of response to stimulus regulation of immune response antigen receptor-mediated signaling pathway activation of immune response regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression biosynthetic process regulation of cytokine production cytokine production regulation of macromolecule biosynthetic process metabolic process regulation of multicellular organismal process macromolecule metabolic process regulation of metabolic process	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane
A [auth B], C [auth A]	Butyrophilin-like protein 3	protein binding binding signaling receptor binding	developmental process extrathymic T cell selection multicellular organismal process cellular developmental process hemopoiesis cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation extrathymic T cell differentiation leukocyte activation T cell activation immune system process cell differentiation developmental process extrathymic T cell selection multicellular organismal process cellular developmental process hemopoiesis cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation extrathymic T cell differentiation leukocyte activation T cell activation immune system process cell differentiation anatomical structure development T cell differentiation cellular process T cell selection leukocyte differentiation cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process response to stimulus signaling positive regulation of biological process cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process regulation of biological process cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway immune response biological regulation T cell receptor signaling pathway regulation of response to stimulus regulation of immune response antigen receptor-mediated signaling pathway activation of immune response regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression biosynthetic process regulation of cytokine production cytokine production regulation of macromolecule biosynthetic process metabolic process regulation of multicellular organismal process macromolecule metabolic process regulation of metabolic process	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth C], D	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B [auth C], D	IPR001870	B30.2/SPRY domain	Domain
B [auth C], D	IPR006574	SPRY-associated	Domain
B [auth C], D	IPR050504	BTN/MOG-like	Family
B [auth C], D	IPR003879	Butyrophylin-like, SPRY domain	Domain
B [auth C], D	IPR013320	Concanavalin A-like lectin/glucanase domain superfamily	Homologous Superfamily
B [auth C], D	IPR053896	Butyrophilin subfamily 3 member A2-like, Ig-C domain	Domain
B [auth C], D	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B [auth C], D	IPR013106	Immunoglobulin V-set domain	Domain
B [auth C], D	IPR003599	Immunoglobulin domain subtype	Domain
B [auth C], D	IPR043136	B30.2/SPRY domain superfamily	Homologous Superfamily
B [auth C], D	IPR007110	Immunoglobulin-like domain	Domain
B [auth C], D	IPR003877	SPRY domain	Domain
A [auth B], C [auth A]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A [auth B], C [auth A]	IPR001870	B30.2/SPRY domain	Domain
A [auth B], C [auth A]	IPR006574	SPRY-associated	Domain
A [auth B], C [auth A]	IPR050504	BTN/MOG-like	Family
A [auth B], C [auth A]	IPR003879	Butyrophylin-like, SPRY domain	Domain
A [auth B], C [auth A]	IPR013320	Concanavalin A-like lectin/glucanase domain superfamily	Homologous Superfamily
A [auth B], C [auth A]	IPR053896	Butyrophilin subfamily 3 member A2-like, Ig-C domain	Domain
A [auth B], C [auth A]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A [auth B], C [auth A]	IPR013106	Immunoglobulin V-set domain	Domain
A [auth B], C [auth A]	IPR003599	Immunoglobulin domain subtype	Domain
A [auth B], C [auth A]	IPR043136	B30.2/SPRY domain superfamily	Homologous Superfamily
A [auth B], C [auth A]	IPR007110	Immunoglobulin-like domain	Domain
A [auth B], C [auth A]	IPR003877	SPRY domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B [auth C], D	: Q6UX41	atypical teratoid rhabdoid tumor lung adenocarcinoma malignant glioma pancreatic intraductal papillary-mucinous neoplasm glioblastoma lung cancer ovarian cancer large cell medulloblastoma malignant colon neoplasm pancreatic intraductal papillary-mucinous carcinoma
A [auth B], C [auth A]	: Q6UXE8	malignant colon neoplasm osteosarcoma ulcerative colitis