1WAT

THE THREE-DIMENSIONAL STRUCTURE OF THE LIGAND-BINDING DOMAIN OF A WILD-TYPE BACTERIAL CHEMOTAXIS RECEPTOR

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 Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1wata_	All alpha proteins	Four-helical up-and-down bundle	Aspartate receptor, ligand-binding domain	Aspartate receptor, ligand-binding domain	Aspartate receptor, ligand-binding domain	(Salmonella enterica subsp. enterica serovar Typhimurium ) [TaxId: 90371 ],	SCOPe (2.08)
B	d1watb_	All alpha proteins	Four-helical up-and-down bundle	Aspartate receptor, ligand-binding domain	Aspartate receptor, ligand-binding domain	Aspartate receptor, ligand-binding domain	(Salmonella enterica subsp. enterica serovar Typhimurium ) [TaxId: 90371 ],	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	8018623	3001511	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Chemoreceptors ligand-binding domain	8018623	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	TarH	e1watA1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Histidine kinase associated sensor domains (From Topology)	T: Histidine kinase associated sensor domains	F: TarH	ECOD (1.6)
B	TarH	e1watB1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Histidine kinase associated sensor domains (From Topology)	T: Histidine kinase associated sensor domains	F: TarH	ECOD (1.6)

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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02203	Tar ligand binding domain homologue (TarH)	Tar ligand binding domain homologue	This entry represents the ligand-binding domain found in a number of methyl-accepting chemotaxis receptors, such as E.coli Tar (taxis to aspartate and repellents), which is a receptor for the attractant L-aspartate [1,2] and also recognises proteogen ...	This entry represents the ligand-binding domain found in a number of methyl-accepting chemotaxis receptors, such as E.coli Tar (taxis to aspartate and repellents), which is a receptor for the attractant L-aspartate [1,2] and also recognises proteogenic amino acids, phthalic acid, Malic acid, 3,4-dihydroxymandelic acid, citrate, benzoate and derivatives, protocatechuate, vanillate, quinate, shikimate and dehydroshikimate (Matilla et al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	ASPARTATE RECEPTOR	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 stimulus regulation of biological process regulation of cellular process signaling biological regulation cellular process signal transduction cell communication	cell periphery plasma membrane membrane cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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	IPR004091	Chemotaxis methyl-accepting receptor, methyl-accepting site	PTM
A, B	IPR004089	Methyl-accepting chemotaxis protein (MCP) signalling domain	Domain
A, B	IPR035440	Methyl-accepting chemotaxis protein, four helix bundle domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.