9L1Q | pdb_00009l1q

Cryo-EM structure of the ICT01-BTN2A1/BTN3A1/BTN3A2 complex (2 fabs)

External Resource: Annotation


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
D [auth F]SCOP2B SuperfamilyImmunoglobulin (Ig) domain-like 8081005 3000071 SCOP2B (2022-06-29)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
E [auth H],
G [auth h]		Heavy ChainIGHV1 -butyrophilin subfamily 3 member a2 | butyrophilin subfamily 2 member a1, butyrophilin subfamily 3 member a1SAbDab (2026-01-16)
F [auth L],
H [auth l]		Light ChainIGKV15 Kappabutyrophilin subfamily 3 member a2 | butyrophilin subfamily 2 member a1, butyrophilin subfamily 3 member a1SAbDab (2026-01-16)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF07686Immunoglobulin V-set domain (V-set)Immunoglobulin V-set domainThis domain is found in antibodies as well as neural protein P0 and CTL4 amongst others. Domain
A, B
PF22705Butyrophilin subfamily 3 member A2-like, Ig-C domain (C2-set_3)Butyrophilin subfamily 3 member A2-like, Ig-C domainThis 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
C [auth E]PF07686Immunoglobulin V-set domain (V-set)Immunoglobulin V-set domainThis domain is found in antibodies as well as neural protein P0 and CTL4 amongst others. Domain
C [auth E]PF22705Butyrophilin subfamily 3 member A2-like, Ig-C domain (C2-set_3)Butyrophilin subfamily 3 member A2-like, Ig-C domainThis 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
D [auth F]PF07686Immunoglobulin V-set domain (V-set)Immunoglobulin V-set domainThis domain is found in antibodies as well as neural protein P0 and CTL4 amongst others. Domain
D [auth F]PF22705Butyrophilin subfamily 3 member A2-like, Ig-C domain (C2-set_3)Butyrophilin subfamily 3 member A2-like, Ig-C domainThis 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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
Butyrophilin subfamily 2 member A1
C [auth E]Butyrophilin subfamily 3 member A2
D [auth F]Butyrophilin subfamily 3 member A1
E [auth H],
G [auth h]		ICT01 heavy chain---
F [auth L],
H [auth l]		ICT01 light chain---

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A, B
IPR036179Immunoglobulin-like domain superfamilyHomologous Superfamily
A, B
IPR001870B30.2/SPRY domainDomain
A, B
IPR006574SPRY-associatedDomain
A, B
IPR037958Butyrophilin subfamily 1/2, SPRY/PRY domainDomain
A, B
IPR003879Butyrophylin-like, SPRY domainDomain
A, B
IPR013320Concanavalin A-like lectin/glucanase domain superfamilyHomologous Superfamily
A, B
IPR053896Butyrophilin subfamily 3 member A2-like, Ig-C domainDomain
A, B
IPR013783Immunoglobulin-like foldHomologous Superfamily
A, B
IPR013106Immunoglobulin V-set domainDomain
A, B
IPR050504Immunoglobulin superfamily BTN/MOG domain-containing proteinFamily
A, B
IPR003599Immunoglobulin domain subtypeDomain
A, B
IPR043136B30.2/SPRY domain superfamilyHomologous Superfamily
A, B
IPR007110Immunoglobulin-like domainDomain
A, B
IPR003877SPRY domainDomain
C [auth E]IPR036179Immunoglobulin-like domain superfamilyHomologous Superfamily
C [auth E]IPR053896Butyrophilin subfamily 3 member A2-like, Ig-C domainDomain
C [auth E]IPR013783Immunoglobulin-like foldHomologous Superfamily
C [auth E]IPR013106Immunoglobulin V-set domainDomain
C [auth E]IPR050504Immunoglobulin superfamily BTN/MOG domain-containing proteinFamily
C [auth E]IPR003599Immunoglobulin domain subtypeDomain
C [auth E]IPR007110Immunoglobulin-like domainDomain
D [auth F]IPR036179Immunoglobulin-like domain superfamilyHomologous Superfamily
D [auth F]IPR001870B30.2/SPRY domainDomain
D [auth F]IPR006574SPRY-associatedDomain
D [auth F]IPR003879Butyrophylin-like, SPRY domainDomain
D [auth F]IPR013320Concanavalin A-like lectin/glucanase domain superfamilyHomologous Superfamily
D [auth F]IPR053896Butyrophilin subfamily 3 member A2-like, Ig-C domainDomain
D [auth F]IPR013783Immunoglobulin-like foldHomologous Superfamily
D [auth F]IPR013106Immunoglobulin V-set domainDomain
D [auth F]IPR050504Immunoglobulin superfamily BTN/MOG domain-containing proteinFamily
D [auth F]IPR003599Immunoglobulin domain subtypeDomain
D [auth F]IPR043136B30.2/SPRY domain superfamilyHomologous Superfamily
D [auth F]IPR007110Immunoglobulin-like domainDomain
D [auth F]IPR037954Butyrophilin subfamily 3, PRY/SPRY domainDomain
D [auth F]IPR003877SPRY domainDomain

Pharos: Disease Associations Pharos Homepage Annotation

ChainsDrug Target  Associated Disease
A, B
Pharos:  Q7KYR7
C [auth E]Pharos:  P78410
D [auth F]Pharos:  O00481