Annotations: 2LD6

Solution Structure of Histidine Phosphotransfer Domain of CheA

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)
A	SCOP2B Superfamily	Histidine-containing phosphotransfer domain, HPT domain	8040373	3001634	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)
A	FHA	e2ld6A1	A: beta barrels	X: Cystatin-like	H: Cystatin/monellin	T: Cystatin/monellin	F: FHA	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.120.160	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	HPT domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01627	Hpt domain (Hpt)	Hpt domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Chemotaxis protein CheA	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 protein binding protein domain specific binding molecular sensor activity catalytic activity, acting on a protein 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 catalytic activity	chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion cellular response to stimulus regulation of biological process phosphorelay signal transduction system regulation of cellular process signaling biological regulation intracellular signal transduction cell communication chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion cellular response to stimulus regulation of biological process phosphorelay signal transduction system regulation of cellular process signaling biological regulation intracellular signal transduction cell communication cellular process signal transduction regulation of response to external stimulus regulation of chemotaxis regulation of response to stimulus regulation of locomotion	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR037006	Histidine kinase CheA-like, homodimeric domain superfamily	Homologous Superfamily
A	IPR004358	Signal transduction histidine kinase-related protein, C-terminal	Domain
A	IPR004105	Histidine kinase CheA-like, homodimeric domain	Domain
A	IPR036097	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily	Homologous Superfamily
A	IPR036061	CheW-like domain superfamily	Homologous Superfamily
A	IPR037052	Chemotaxis protein CheA, P2 response regulator-binding domain superfamily	Homologous Superfamily
A	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A	IPR010808	Chemotaxis protein CheA, P2 response regulator-binding	Domain
A	IPR002545	CheW-like domain	Domain
A	IPR003594	Histidine kinase/HSP90-like ATPase domain	Domain
A	IPR005467	Histidine kinase domain	Domain
A	IPR036641	HPT domain superfamily	Homologous Superfamily
A	IPR008207	Signal transduction histidine kinase, phosphotransfer (Hpt) domain	Domain
A	IPR051315	Bacterial Chemotaxis Sensor Histidine Kinase CheA	Family
A	IPR035891	CheY-binding domain of CheA	Homologous Superfamily

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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.