Annotations: 3ATP

Structure of the ligand binding domain of the bacterial serine chemoreceptor Tsr with ligand

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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	d3atpa_	All alpha proteins	Four-helical up-and-down bundle	Aspartate receptor, ligand-binding domain	automated matches	automated matches	(Escherichia coli str. K-12 substr. W3110 ) [TaxId: 316407 ],	SCOPe (2.08)
B	d3atpb_	All alpha proteins	Four-helical up-and-down bundle	Aspartate receptor, ligand-binding domain	automated matches	automated matches	(Escherichia coli str. K-12 substr. W3110 ) [TaxId: 316407 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Chemoreceptors, ligand-binding domain	8018626	3001511	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Chemoreceptors, ligand-binding domain	8018626	3001511	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	PDH_N, F420_oxidored	e3atpA1	A: a/b three-layered sandwiches	X: Cystatin-like	H: Cystatin/monellin	T: Cystatin/monellin	F: PDH_N, F420_oxidored	ECOD (v294.1)
B	PNP_UDP_1	e3atpB1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: PNP_UDP_1	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.120.30	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Aspartate receptor, ligand-binding domain	CATH (4.3.0)
B	1.20.120.30	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Aspartate receptor, ligand-binding domain	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Methyl-accepting chemotaxis protein I	identical protein binding protein binding binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity	chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion cellular response to acid chemical cellular response to stimulus cellular response to amino acid stimulus response to acid chemical cellular response to chemical stimulus cellular process response to amino acid regulation of bacterial-type flagellum-dependent cell motility chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion cellular response to acid chemical cellular response to stimulus cellular response to amino acid stimulus response to acid chemical cellular response to chemical stimulus cellular process response to amino acid regulation of bacterial-type flagellum-dependent cell motility regulation of biological process regulation of cell motility regulation of cellular process biological regulation archaeal or bacterial-type flagellum-dependent cell motility cilium or flagellum-dependent cell motility regulation of locomotion bacterial-type flagellum-dependent cell motility cell motility detection of stimulus detection of chemical stimulus signaling signal transduction cell communication	protein-containing complex methyl accepting chemotaxis protein complex cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR051310	MCP_chemotaxis	Unknown
A, B	IPR003122	Chemotaxis methyl-accepting receptor Tar-related, ligand-binding	Domain
A, B	IPR004090	Chemotaxis methyl-accepting receptor	Family
A, B	IPR003660	HAMP domain	Domain
A, B	IPR035440	Methyl-accepting chemotaxis protein, four helix bundle domain superfamily	Homologous Superfamily
A, B	IPR004091	Chemotaxis methyl-accepting receptor, methyl-accepting site	PTM
A, B	IPR004089	Methyl-accepting chemotaxis protein (MCP) signalling domain	Domain

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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.