Annotations: 3HZH

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3hzha_	Alpha and beta proteins (a/b)	Flavodoxin-like	CheY-like	automated matches	automated matches	(Borreliella burgdorferi ) [TaxId: 139 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	CheY-related	8072797	4003632	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	CheY-like	8072798	3001156	SCOP2 (2022-06-29)
B	SCOP2 Family	CheC-like	8089549	4001417	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	CheC-like	8089550	3001525	SCOP2 (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	Response_reg	e3hzhA1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: Response_reg	ECOD (1.6)
B	CheX	e3hzhB1	A: a+b duplicates or obligate multimers	X: CheC-like (From Topology)	H: CheC-like (From Topology)	T: CheC-like	F: CheX	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
B	3.40.1550.10	Alpha Beta	3-Layer(aba) Sandwich	Chemotaxis protein chec	CheC-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00072	Response regulator receiver domain (Response_reg)	Response regulator receiver domain	This domain receives the signal from the sensor partner in bacterial two-component systems. It is usually found N-terminal to a DNA binding effector domain.	Domain
B	PF04509	CheC-like family (CheC)	CheC-like family	The restoration of pre-stimulus levels of the chemotactic response regulator, CheY-P, is important for allowing bacteria to respond to new environmental stimuli. The members of this family, CheC, CheX, CheA and FliY are CheY-P phosphatase [1,2]. Che ...	The restoration of pre-stimulus levels of the chemotactic response regulator, CheY-P, is important for allowing bacteria to respond to new environmental stimuli. The members of this family, CheC, CheX, CheA and FliY are CheY-P phosphatase [1,2]. CheC appears to be primarily involved in restoring normal CheY-P levels, whereas FliY seems to act on CheY-P constitutively. CheD enhances the activity of CheC 5-fold, which is normally relatively low [1,2]. In some cases, the region represented by this entry is present as multiple copies.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Chemotaxis response regulator (CheY-3)	cation binding ion binding binding metal ion binding small molecule binding	cellular response to stimulus regulation of biological process phosphorelay signal transduction system regulation of cellular process response to stimulus signaling biological regulation intracellular signal transduction cell communication cellular process signal transduction	-
B	Chemotaxis operon protein (CheX)	identical protein binding protein binding binding	chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011006	CheY-like superfamily	Homologous Superfamily
A	IPR001789	Signal transduction response regulator, receiver domain	Domain
B	IPR028976	CheC-like superfamily	Homologous Superfamily
B	IPR038756	CheY-P phosphatase CheX-like	Family
B	IPR028051	Chemotaxis phosphatase CheX-like domain	Domain

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.