2KSD | pdb_00002ksd

Backbone structure of the membrane domain of E. coli histidine kinase receptor ArcB, Center for Structures of Membrane Proteins (CSMP) target 4310C

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	HKR_ArcB_TM	e2ksdA1	A: a/b three-layered sandwiches	X: Histidine kinase receptor ArcB membrane domain	H: Histidine kinase receptor ArcB membrane domain	T: Histidine kinase receptor ArcB membrane domain	F: HKR_ArcB_TM	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.287.970	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	His Kinase A (phosphoacceptor) domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF18415	Histidine kinase receptor ArcB trans-membrane domain (HKR_ArcB_TM)	Histidine kinase receptor ArcB trans-membrane domain	Histidine kinase receptors (HKRs) are part of a two-component system, in which an HKR in the bacterial inner membrane transmits a signal to a response regulator located in the cytoplasm. This is a trans-membrane domain (TM) found in ArcB (class 2, ae ...	Histidine kinase receptors (HKRs) are part of a two-component system, in which an HKR in the bacterial inner membrane transmits a signal to a response regulator located in the cytoplasm. This is a trans-membrane domain (TM) found in ArcB (class 2, aerobic respiratory control sensor). ArcB has two TM helices connected by a short periplasmic loop. TM domain structures suggests a loose helical packing which provides an inherent flexibility in the TM domains and that this is perhaps essential to the mechanism of signal transduction across the membrane [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Aerobic respiration control sensor protein arcB	phosphoric ester hydrolase activity phosphoprotein phosphatase activity catalytic activity, acting on a protein hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity catalytic activity molecular 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 phosphoric ester hydrolase activity phosphoprotein phosphatase activity catalytic activity, acting on a protein hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity catalytic activity molecular 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 molecular function regulator activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding	response to stimulus response to oxygen levels response to abiotic stimulus cellular response to stimulus regulation of biological process regulation of cellular process signaling biological regulation cellular process signal transduction cell communication protein phosphorylation protein autophosphorylation phosphorylation response to stimulus response to oxygen levels response to abiotic stimulus cellular response to stimulus regulation of biological process regulation of cellular process signaling biological regulation cellular process signal transduction cell communication protein phosphorylation protein autophosphorylation phosphorylation primary metabolic process macromolecule modification phosphate-containing compound metabolic process metabolic process protein metabolic process macromolecule metabolic process protein modification process phosphorus metabolic 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 regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic 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 regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR027460	Aerobic respiration control sensor protein ArcB, transmembrane domain superfamily	Homologous Superfamily
A	IPR011006	CheY-like superfamily	Homologous Superfamily
A	IPR040642	Histidine kinase receptor ArcB, transmembrane domain	Domain
A	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A	IPR003661	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain	Domain
A	IPR003594	Histidine kinase/HSP90-like ATPase domain	Domain
A	IPR000700	PAS-associated, C-terminal	Domain
A	IPR008207	Signal transduction histidine kinase, phosphotransfer (Hpt) domain	Domain
A	IPR013767	PAS fold	Domain
A	IPR000014	PAS domain	Domain
A	IPR004358	Signal transduction histidine kinase-related protein, C-terminal	Domain
A	IPR014409	Signal transduction histidine kinase, hybrid-type, aerobic respiration control ArcB	Family
A	IPR001789	Signal transduction response regulator, receiver domain	Domain
A	IPR036097	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily	Homologous Superfamily
A	IPR035965	PAS domain superfamily	Homologous Superfamily
A	IPR005467	Histidine kinase domain	Domain
A	IPR036641	HPT domain superfamily	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Transmembrane	Alpha-helical polytopic	Signal transduction histidine kinase	Signal transduction histidine kinase

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Histidine Kinase Receptors	ArcB (1-115) Aerobic Respiration Control sensor membrane 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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

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