Annotations: 3CNB

Crystal structure of signal receiver domain of DNA binding response regulator protein (merR) from Colwellia psychrerythraea 34H

External Resource: Annotation

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2 Family	CheY-related	8072827	4003632	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	CheY-like	8072828	3001156	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	CheY-like	8072828	3001156	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	CheY-like	8072828	3001156	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)
C	TetR_N	e3cnbC1	A: beta barrels	X: HTH	H: Nudix	T: Nudix	F: TetR_N	ECOD (v294.2)
B	TetR_N	e3cnbB1	A: beta barrels	X: HTH	H: Nudix	T: Nudix	F: TetR_N	ECOD (v294.2)
A	4HBT	e3cnbA1	A: beta barrels	X: Profilin-like	H: sensor domains	T: sensor domains	F: 4HBT	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
B	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
A	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	DNA-binding response regulator, merR family	DNA binding binding nucleic acid 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 RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process 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 RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR009061	Putative DNA-binding domain superfamily	Homologous Superfamily
A, B, C	IPR010093	SinI-like, DNA-binding domain	Domain
A, B, C	IPR011006	CheY-like superfamily	Homologous Superfamily
A, B, C	IPR001789	Signal transduction response regulator, receiver domain	Domain
A, B, C	IPR050595	Bacterial response regulator	Family
A, B, C	IPR041657	Helix-turn-helix domain, group 17	Domain
A, B, C	IPR000551	MerR-type HTH domain	Domain

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

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.