Annotations: 6S1K

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF01584	e6s1kA1	A: beta barrels	X: OB-fold	H: CheW (From Topology)	T: CheW	F: PF01584	ECOD (1.6)
A	PF02895	e6s1kA3	A: alpha duplicates or obligate multimers	X: ROP-like	H: Homodimeric domain of signal transducing histidine kinase (From Topology)	T: Homodimeric domain of signal transducing histidine kinase	F: PF02895	ECOD (1.6)
A	PF02518	e6s1kA2	A: a+b two layers	X: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase-like	H: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase (From Topology)	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: PF02518	ECOD (1.6)
B	PF01584	e6s1kB2	A: beta barrels	X: OB-fold	H: CheW (From Topology)	T: CheW	F: PF01584	ECOD (1.6)
B	PF02895	e6s1kB4	A: alpha duplicates or obligate multimers	X: ROP-like	H: Homodimeric domain of signal transducing histidine kinase (From Topology)	T: Homodimeric domain of signal transducing histidine kinase	F: PF02895	ECOD (1.6)
B	PF02518	e6s1kB1	A: a+b two layers	X: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase-like	H: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase (From Topology)	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: PF02518	ECOD (1.6)
C	PF01584	e6s1kC1	A: beta barrels	X: OB-fold	H: CheW (From Topology)	T: CheW	F: PF01584	ECOD (1.6)
D	PF01584	e6s1kD1	A: beta barrels	X: OB-fold	H: CheW (From Topology)	T: CheW	F: PF01584	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02518	Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase (HATPase_c)	Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase	This family represents the structurally related ATPase domains of histidine kinase, DNA gyrase B and HSP90.	Domain
A, B	PF01584	CheW-like domain (CheW)	CheW-like domain	CheW proteins are part of the chemotaxis signaling mechanism in bacteria. CheW interacts with the methyl accepting chemotaxis proteins (MCPs) and relays signals to CheY, which affects flageller rotation. This family includes CheW and other related pr ...	CheW proteins are part of the chemotaxis signaling mechanism in bacteria. CheW interacts with the methyl accepting chemotaxis proteins (MCPs) and relays signals to CheY, which affects flageller rotation. This family includes CheW and other related proteins that are involved in chemotaxis. The CheW-like regulatory domain in CheA [1] binds to CheW, suggesting that these domains can interact with each other.	Domain
A, B	PF02895	Signal transducing histidine kinase, homodimeric domain (H-kinase_dim)	Signal transducing histidine kinase, homodimeric domain	This helical bundle domain is the homodimer interface of the signal transducing histidine kinase family.	Domain
C, D	PF01584	CheW-like domain (CheW)	CheW-like domain	CheW proteins are part of the chemotaxis signaling mechanism in bacteria. CheW interacts with the methyl accepting chemotaxis proteins (MCPs) and relays signals to CheY, which affects flageller rotation. This family includes CheW and other related pr ...	CheW proteins are part of the chemotaxis signaling mechanism in bacteria. CheW interacts with the methyl accepting chemotaxis proteins (MCPs) and relays signals to CheY, which affects flageller rotation. This family includes CheW and other related proteins that are involved in chemotaxis. The CheW-like regulatory domain in CheA [1] binds to CheW, suggesting that these domains can interact with each other.	Domain
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	PF00015	Methyl-accepting chemotaxis protein (MCP) signalling domain (MCPsignal)	Methyl-accepting chemotaxis protein (MCP) signalling domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Chemotaxis protein CheA	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 binding adenyl ribonucleotide binding nucleotide binding 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 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	cell swimming cellular process bacterial-type flagellum-dependent cell motility bacterial-type flagellum-dependent swimming motility cell motility archaeal or bacterial-type flagellum-dependent cell motility cilium or flagellum-dependent cell motility regulation of protein modification process positive regulation of protein metabolic process positive regulation of biological process positive regulation of post-translational protein modification regulation of primary metabolic process positive regulation of metabolic process positive regulation of protein modification process cell swimming cellular process bacterial-type flagellum-dependent cell motility bacterial-type flagellum-dependent swimming motility cell motility archaeal or bacterial-type flagellum-dependent cell motility cilium or flagellum-dependent cell motility regulation of protein modification process positive regulation of protein metabolic process positive regulation of biological process positive regulation of post-translational protein modification regulation of primary metabolic process positive regulation of metabolic process positive regulation of protein modification process organic substance metabolic process positive regulation of macromolecule metabolic process protein metabolic process protein modification process regulation of biological process organonitrogen compound metabolic process regulation of post-translational protein modification regulation of protein metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process macromolecule modification metabolic process macromolecule metabolic process post-translational protein modification regulation of metabolic process chemotaxis response to stimulus regulation of response to external stimulus response to external stimulus regulation of chemotaxis taxis regulation of response to stimulus response to chemical regulation of locomotion locomotion aerotaxis energy taxis negative regulation of metabolic process negative regulation of biological process negative regulation of protein modification process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of bacterial-type flagellum-dependent cell motility regulation of cell motility regulation of cellular process cellular response to stimulus signaling signal transduction cell communication localization cellular localization establishment of localization in cell establishment of localization phosphorelay signal transduction system intracellular signal transduction phosphorylation cellular metabolic process phosphate-containing compound metabolic process phosphorus metabolic process thermotaxis response to abiotic stimulus response to temperature stimulus	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol cell periphery plasma membrane membrane protein-containing complex methyl accepting chemotaxis protein complex
C, D	CheW	protein binding binding protein domain specific binding	chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion regulation of protein modification process positive regulation of protein metabolic process positive regulation of biological process positive regulation of post-translational protein modification regulation of primary metabolic process positive regulation of metabolic process positive regulation of protein modification process organic substance metabolic process chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion regulation of protein modification process positive regulation of protein metabolic process positive regulation of biological process positive regulation of post-translational protein modification regulation of primary metabolic process positive regulation of metabolic process positive regulation of protein modification process organic substance metabolic process positive regulation of macromolecule metabolic process protein metabolic process protein modification process regulation of biological process organonitrogen compound metabolic process regulation of post-translational protein modification regulation of protein metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process macromolecule modification metabolic process macromolecule metabolic process post-translational protein modification regulation of metabolic process aerotaxis energy taxis cellular response to stimulus regulation of cellular process signaling cellular process signal transduction cell communication localization cellular localization establishment of localization in cell establishment of localization	cell tip cell pole cellular anatomical entity intracellular anatomical structure cytoplasm cytosol protein-containing complex methyl accepting chemotaxis protein complex cell periphery plasma membrane membrane
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	Methyl-accepting chemotaxis protein I	identical protein binding protein binding binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity	chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion regulation of cellular process regulation of protein modification process regulation of catalytic activity regulation of protein phosphorylation regulation of protein histidine kinase activity regulation of transferase activity regulation of primary metabolic process organic substance metabolic process chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion regulation of cellular process regulation of protein modification process regulation of catalytic activity regulation of protein phosphorylation regulation of protein histidine kinase activity regulation of transferase activity regulation of primary metabolic process organic substance metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process protein metabolic process phosphorus metabolic process protein modification process regulation of biological process organonitrogen compound metabolic process protein phosphorylation phosphorylation cellular metabolic process regulation of protein metabolic process biological regulation regulation of cellular metabolic process primary metabolic process regulation of protein kinase activity regulation of macromolecule metabolic process regulation of molecular function regulation of kinase activity macromolecule modification regulation of phosphorylation regulation of phosphorus metabolic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process regulation of response to external stimulus regulation of chemotaxis regulation of response to stimulus regulation of locomotion cellular response to acid chemical cellular response to stimulus cellular response to amino acid stimulus response to acid chemical response to organic substance cellular response to chemical stimulus response to amino acid regulation of bacterial-type flagellum-dependent cell motility regulation of cell motility archaeal or bacterial-type flagellum-dependent cell motility cilium or flagellum-dependent cell motility bacterial-type flagellum-dependent cell motility cell motility regulation of signaling protein-containing complex organization signaling regulation of signal transduction cell communication cellular component organization cellular component biogenesis signal complex assembly cellular component assembly protein-containing complex assembly regulation of cell communication cellular component organization or biogenesis signal transduction protein localization localization cellular localization receptor clustering cellular macromolecule localization macromolecule localization localization within membrane protein localization to membrane detection of stimulus detection of chemical stimulus	protein-containing complex methyl accepting chemotaxis protein complex cell periphery plasma membrane membrane cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR037006	Histidine kinase CheA-like, homodimeric domain superfamily	Homologous Superfamily
A, B	IPR003594	Histidine kinase/HSP90-like ATPase	Domain
A, B	IPR036061	CheW-like domain superfamily	Homologous Superfamily
A, B	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A, B	IPR002545	CheW-like domain	Domain
A, B	IPR008207	Signal transduction histidine kinase, phosphotransfer (Hpt) domain	Domain
A, B	IPR035891	CheY-binding domain of CheA	Homologous Superfamily
A, B	IPR004358	Signal transduction histidine kinase-related protein, C-terminal	Domain
A, B	IPR004105	Histidine kinase CheA-like, homodimeric domain	Domain
A, B	IPR036097	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily	Homologous Superfamily
A, B	IPR015162	CheY binding	Domain
A, B	IPR005467	Histidine kinase domain	Domain
A, B	IPR036641	HPT domain superfamily	Homologous Superfamily
C, D	IPR039315	Chemotaxis protein CheW	Family
C, D	IPR036061	CheW-like domain superfamily	Homologous Superfamily
C, D	IPR002545	CheW-like domain	Domain
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	IPR003122	Chemotaxis methyl-accepting receptor Tar-related, ligand-binding	Domain
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	IPR004090	Chemotaxis methyl-accepting receptor	Family
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	IPR003660	HAMP domain	Domain
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	IPR035440	Methyl-accepting chemotaxis protein, four helix bundle domain superfamily	Homologous Superfamily
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	IPR004091	Chemotaxis methyl-accepting receptor, methyl-accepting site	PTM
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	IPR004089	Methyl-accepting chemotaxis protein (MCP) signalling domain	Domain

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
E, F, G, H, I E, F, G, H, I, J, K, L, M, N, O, P	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Chemotaxis Protein Complexes	Core Chemotaxis Signaling Unit, carrying QQQQ receptor mutation