4ZR7

The structure of a domain of a functionally unknown protein from Bacillus subtilis subsp. subtilis str. 168

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	EUF08501	e4zr7A1	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: EUF08501	ECOD (1.6)
B	EUF08501	e4zr7B1	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: EUF08501	ECOD (1.6)
C	EUF08501	e4zr7C1	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: EUF08501	ECOD (1.6)
D	EUF08501	e4zr7D1	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: EUF08501	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF18698	Histidine kinase sensor domain (HisK_sensor)	Histidine kinase sensor domain	The Bacillus subtilis ResD-ResE two-component (TC) regulatory system activates genes involved in nitrate respiration in response to oxygen limitation or nitric oxide (NO). The sensor kinase ResE activates the response regulator ResD through phosphory ...	The Bacillus subtilis ResD-ResE two-component (TC) regulatory system activates genes involved in nitrate respiration in response to oxygen limitation or nitric oxide (NO). The sensor kinase ResE activates the response regulator ResD through phosphorylation, which then binds to the regulatory region of genes involved in anaerobiosis to activate their transcription. In other words, ResE is involved in sensing signals related to the redox state of the cells. ResE is composed of an N-terminal signal input domain and a C-terminal catalytic domain. The N-terminal domain contains two transmembrane subdomains and a large extra-cytoplasmic loop. Mutational analysis indicate that cytoplasmic ResE lacking the transmembrane segments and the extra-cytoplasmic loop retains the ability to sense oxygen limitation and NO, which leads to transcriptional activation of ResDE-dependent genes. Having said that, it is also proposed that the extra-cytoplasmic region may serve as a second signal-sensing subdomain. This suggests that the extracytoplasmic region could contribute to amplification of ResE activity leading to the robust activation of genes required for anaerobic metabolism in B. subtilis. This entry represents the extracytoplasmic subdomain [1]. Family members also include SrrB found in S. aureus that is similar to ResE of B. subtilis [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Sensor histidine kinase ResE	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding enzyme regulator activity kinase activator activity enzyme activator activity molecular function activator activity molecular function regulator activity protein kinase activator activity protein kinase regulator activity kinase regulator activity catalytic activity, acting on a protein small molecule sensor activity kinase activity protein kinase activity transferase activity phosphotransferase activity, nitrogenous group as acceptor phosphotransferase activity, alcohol group as acceptor protein histidine kinase activity transferase activity, transferring phosphorus-containing groups phosphorelay sensor kinase activity catalytic activity molecular transducer activity phosphorelay response regulator activity	regulation of cellular process cellular biosynthetic process 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 organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of cellular process cellular biosynthetic process 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 organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process cellular metabolic process biological regulation primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process cellular process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process cellular response to stimulus osmosensory signaling via phosphorelay pathway response to stimulus signaling cellular response to chemical stress intracellular signal transduction cellular response to environmental stimulus cell communication osmosensory signaling pathway cellular response to stress response to stress signal transduction response to osmotic stress phosphorelay signal transduction system cellular response to osmotic stress cellular response to chemical stimulus response to chemical response to abiotic stimulus cellular response to abiotic stimulus	cell periphery plasma membrane membrane cellular anatomical entity membrane microdomain membrane raft

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR013767	PAS fold	Domain
A, B, C, D	IPR000014	PAS domain	Domain
A, B, C, D	IPR004358	Signal transduction histidine kinase-related protein, C-terminal	Domain
A, B, C, D	IPR003594	Histidine kinase/HSP90-like ATPase	Domain
A, B, C, D	IPR036097	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily	Homologous Superfamily
A, B, C, D	IPR003660	HAMP domain	Domain
A, B, C, D	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A, B, C, D	IPR003661	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain	Domain
A, B, C, D	IPR035965	PAS domain superfamily	Homologous Superfamily
A, B, C, D	IPR041328	ResE, histidine kinase sensor domain	Domain
A, B, C, D	IPR005467	Histidine kinase 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.