Annotations: 4Z9I

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4z9ia_	All alpha proteins	Four-helical up-and-down bundle	Aspartate receptor, ligand-binding domain	automated matches	automated matches	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d4z9ib_	All alpha proteins	Four-helical up-and-down bundle	Aspartate receptor, ligand-binding domain	automated matches	automated matches	(Escherichia coli K-12 ) [TaxId: 83333 ],	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	8018620	3001511	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Chemoreceptors, ligand-binding domain	8018620	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	e4z9iA1	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	e4z9iB1	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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Methyl-accepting chemotaxis protein II	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity protein histidine kinase binding kinase binding enzyme binding protein kinase binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity	chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion regulation of biological process regulation of protein modification process regulation of post-translational protein modification positive regulation of protein metabolic process regulation of protein metabolic process biological regulation positive regulation of biological process primary metabolic process chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion regulation of biological process regulation of protein modification process regulation of post-translational protein modification positive regulation of protein metabolic process regulation of protein metabolic process biological regulation positive regulation of biological process primary metabolic process regulation of macromolecule metabolic process positive regulation of post-translational protein modification regulation of primary metabolic process positive regulation of metabolic process positive regulation of protein modification process macromolecule modification metabolic process positive regulation of macromolecule metabolic process protein metabolic process macromolecule metabolic process protein modification process post-translational protein modification regulation of metabolic process regulation of response to external stimulus regulation of chemotaxis regulation of response to stimulus regulation of 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 signaling regulation of cellular process protein-containing complex organization signaling regulation of signal transduction cell communication cellular component organization cellular component biogenesis signal complex assembly cellular component assembly protein-containing complex assembly regulation of cell communication cellular component organization or biogenesis signal transduction protein complex oligomerization protein homooligomerization detection of stimulus detection of chemical stimulus	cell tip cell pole cellular anatomical entity protein-containing complex methyl accepting chemotaxis protein complex cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR051310	Methyl-accepting chemotaxis	Family
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

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 R01GM133198.