3ZRX | pdb_00003zrx

The high resolution structure of a dimeric Hamp-Dhp fusion displays strong asymmetry

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
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)
B	SCOP2B Superfamily	Homodimeric domain of signal transducing histidine kinase	8037203	3001864	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	HAMP domain-like	8033490	3001372	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	HAMP domain-like	8033490	3001372	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Homodimeric domain of signal transducing histidine kinase	8037203	3001864	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)
B	ubiquitin	e3zrxB1	A: a/b three-layered sandwiches	X: PBZ domain	H: PBZ domain	T: PBZ domain	F: ubiquitin	ECOD (v294.1)
A	ubiquitin	e3zrxA1	A: a/b three-layered sandwiches	X: PBZ domain	H: PBZ domain	T: PBZ domain	F: ubiquitin	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.287.130	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Signal transduction histidine kinase, dimerisation/phosphotransfer (DHp) domain	CATH (4.3.0)
A	1.10.287.130	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Signal transduction histidine kinase, dimerisation/phosphotransfer (DHp) domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00512	His Kinase A (phospho-acceptor) domain (HisKA)	His Kinase A (phospho-acceptor) domain	Dimerisation and phospho-acceptor domain of histidine kinases.	Domain
A, B	PF00672	HAMP domain (HAMP)	HAMP domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	AF1503 PROTEIN, OSMOLARITY SENSOR PROTEIN ENVZ	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 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 catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity phosphotransferase activity, nitrogenous group as acceptor phosphotransferase activity, alcohol group as acceptor protein histidine kinase activity transferase activity, transferring phosphorus-containing groups cation binding metal ion binding identical protein binding protein binding protein homodimerization activity protein dimerization activity phosphoric ester hydrolase activity phosphoprotein phosphatase activity hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity molecular sensor activity phosphorelay sensor kinase activity molecular function regulator activity	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 response to osmotic stress response to stress response to abiotic stimulus 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 response to osmotic stress response to stress response to abiotic stimulus 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	cell periphery cellular anatomical structure plasma membrane membrane intracellular anatomical structure cytoplasm cytosol extracellular region outer membrane-bounded periplasmic space cell envelope periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003660	HAMP domain	Domain
A, B	IPR050398	Heme sensor protein HssS/ArlS-like	Family
A, B	IPR004358	Signal transduction histidine kinase-related protein, C-terminal	Domain
A, B	IPR036097	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily	Homologous Superfamily
A, B	IPR003660	HAMP domain	Domain
A, B	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A, B	IPR003661	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain	Domain
A, B	IPR003594	Histidine kinase/HSP90-like ATPase domain	Domain
A, B	IPR005467	Histidine kinase domain	Domain
A, B	IPR050980	Two-component sensor histidine kinase	Family

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.