2IXE

Crystal structure of the ATPase domain of TAP1 with ATP (D645N mutant)

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ixea_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	ABC transporter ATPase domain-like	automated matches	RAT (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B [auth D]	d2ixed_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	ABC transporter ATPase domain-like	automated matches	RAT (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	ABC transporter ATPase domain-like	8018486	4003976	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ABC transporter-like P-loop ATPases	8057865	3002020	SCOP2 (2022-06-29)
B [auth D]	SCOP2B Superfamily	ABC transporter-like P-loop ATPases	8057865	3002020	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	ABC_tran_1	e2ixeA1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: ABC_tran_1	ECOD (1.6)
B [auth D]	ABC_tran_1	e2ixeD1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: ABC_tran_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
B [auth D]	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B [auth D]	PF00005	ABC transporter (ABC_tran)	ABC transporter	ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are comp ...	ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are composed of two copies of this domain and two copies of a transmembrane domain Pfam:PF00664. These four domains may belong to a single polypeptide as in Swiss:P13569, or belong in different polypeptide chains.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B [auth D]	ANTIGEN PEPTIDE TRANSPORTER 1	binding antigen binding peptide antigen binding peptide binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding MHC class Ib protein binding protein binding signaling receptor binding MHC protein binding tapasin binding TAP1 binding binding antigen binding peptide antigen binding peptide binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding MHC class Ib protein binding protein binding signaling receptor binding MHC protein binding tapasin binding TAP1 binding TAP binding adenyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding carbohydrate derivative binding ribonucleotide binding ABC-type peptide antigen transporter activity ABC-type peptide transporter activity peptide transmembrane transporter activity ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity transporter activity transmembrane transporter activity ATP-dependent activity ADP binding identical protein binding protein homodimerization activity protein dimerization activity protein-containing complex binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity MHC class I protein binding cation binding metal ion binding TAP2 binding	peptide transport antigen processing and presentation localization nitrogen compound transport amide transport transport immune system process antigen processing and presentation of peptide antigen establishment of localization peptide antigen transport response to stimulus immune response adaptive immune response protein localization peptide transport antigen processing and presentation localization nitrogen compound transport amide transport transport immune system process antigen processing and presentation of peptide antigen establishment of localization peptide antigen transport response to stimulus immune response adaptive immune response protein localization establishment of protein localization cellular localization protein transport cellular macromolecule localization macromolecule localization cellular process regulation of immune effector process lymphocyte mediated immunity regulation of cellular process negative regulation of biological process negative regulation of lymphocyte mediated immunity response to biotic stimulus negative regulation of natural killer cell mediated immunity leukocyte mediated immunity regulation of immune system process natural killer cell mediated immunity regulation of biological process regulation of natural killer cell mediated immunity response to other organism regulation of innate immune response negative regulation of immune response negative regulation of immune effector process response to external stimulus leukocyte mediated cytotoxicity 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 biological process involved in interspecies interaction between organisms regulation of response to external stimulus negative regulation of response to biotic stimulus protection from natural killer cell mediated cytotoxicity response to stress regulation of response to stress negative regulation of leukocyte mediated cytotoxicity negative regulation of cellular process innate immune response response to external biotic stimulus negative regulation of cell killing defense response negative regulation of response to stimulus regulation of leukocyte mediated cytotoxicity biological regulation defense response to symbiont regulation of lymphocyte mediated immunity negative regulation of immune system process negative regulation of leukocyte mediated immunity cell killing negative regulation of innate immune response transmembrane transport antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of peptide antigen via MHC class I antigen processing and presentation of endogenous antigen antigen processing and presentation of endogenous peptide antigen via MHC class I establishment of localization in cell intracellular transport cytosol to endoplasmic reticulum transport	membrane-bounded organelle protein-containing complex intracellular anatomical structure MHC class I peptide loading complex organelle subcompartment membrane membrane protein complex intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure TAP complex organelle membrane-bounded organelle protein-containing complex intracellular anatomical structure MHC class I peptide loading complex organelle subcompartment membrane membrane protein complex intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure TAP complex organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B [auth D]	IPR003439	ABC transporter-like, ATP-binding domain	Domain
A, B [auth D]	IPR003593	AAA+ ATPase domain	Domain
A, B [auth D]	IPR011527	ABC transporter type 1, transmembrane domain	Domain
A, B [auth D]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, B [auth D]	IPR017871	ABC transporter-like, conserved site	Conserved Site
A, B [auth D]	IPR013305	ABC transporter Tap-like	Family
A, B [auth D]	IPR036640	ABC transporter type 1, transmembrane domain superfamily	Homologous Superfamily
A, B [auth D]	IPR039421	Type 1 protein exporter	Family

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.