2LP4

Solution structure of P1-CheY/P2 complex in bacterial chemotaxis

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
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: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B [auth Y]	d2lp4y_	Alpha and beta proteins (a/b)	Flavodoxin-like	CheY-like	CheY-related	CheY protein	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	CheY-binding domain of CheA	8035541	3001231	SCOP2B (2022-06-29)
B [auth Y]	SCOP2B Superfamily	CheY-like	8034311	3001156	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	Hpt	e2lp4A1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Histidine-containing phosphotransfer domain, HPT domain (From Topology)	T: Histidine-containing phosphotransfer domain, HPT domain	F: Hpt	ECOD (1.6)
A	CheY-binding	e2lp4A2	A: a+b two layers	X: Alpha-beta plaits	H: CheY-binding domain of CheA (From Topology)	T: CheY-binding domain of CheA	F: CheY-binding	ECOD (1.6)
B [auth Y]	Response_reg	e2lp4Y1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: Response_reg	ECOD (1.6)

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)
A	3.30.70.400	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	CheY-binding domain of CheA	CATH (4.3.0)
B [auth Y]	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01627	Hpt domain (Hpt)	Hpt domain	-	Family
A	PF09078	CheY binding (CheY-binding)	CheY binding	Members of this family adopt a secondary structure consisting of an open-face beta/alpha sandwich, with four antiparallel beta-strands and two alpha-helices. They bind to a corresponding domain on CheY, with subsequent phosphorylation of the CheY Asp ...	Members of this family adopt a secondary structure consisting of an open-face beta/alpha sandwich, with four antiparallel beta-strands and two alpha-helices. They bind to a corresponding domain on CheY, with subsequent phosphorylation of the CheY Asp57 residue, and activation of CheY, which then affects flagellar rotation [1].	Domain
B [auth Y]	PF00072	Response regulator receiver domain (Response_reg)	Response regulator receiver domain	This domain receives the signal from the sensor partner in bacterial two-component systems. It is usually found N-terminal to a DNA binding effector domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Chemotaxis protein CheA	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 binding adenyl ribonucleotide 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 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	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 cellular process 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 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 cellular process 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 positive regulation of macromolecule metabolic process protein metabolic process protein modification process positive regulation of cellular process regulation of biological 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 cellular 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 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 thermotaxis response to abiotic stimulus response to temperature stimulus	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane protein-containing complex methyl accepting chemotaxis protein complex
B [auth Y]	Chemotaxis protein CheY	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding acetyltransferase activity acyltransferase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity catalytic activity molecular transducer activity phosphorelay response regulator activity	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 chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion cellular response to stimulus 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 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 signal transduction regulation of response to external stimulus regulation of chemotaxis regulation of response to stimulus regulation of locomotion aerotaxis energy taxis regulation of bacterial-type flagellum-dependent cell motility regulation of cell motility peptidyl-lysine acetylation peptidyl-lysine modification primary metabolic process protein acylation protein acetylation internal peptidyl-lysine acetylation macromolecule modification peptidyl-amino acid modification metabolic process protein metabolic process macromolecule metabolic process protein modification process internal protein amino acid acetylation thermotaxis response to abiotic stimulus response to temperature stimulus	cell projection cellular anatomical structure organelle membraneless organelle bacterial-type flagellum bacterial-type flagellum basal body bacterial-type flagellum motor bacterial-type flagellum rotor complex intracellular anatomical structure cytoplasm cytosol bacterial-type flagellum basal body, C ring

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR037006	Histidine kinase CheA-like, homodimeric domain superfamily	Homologous Superfamily
A	IPR036061	CheW-like domain superfamily	Homologous Superfamily
A	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A	IPR002545	CheW-like domain	Domain
A	IPR003594	Histidine kinase/HSP90-like ATPase domain	Domain
A	IPR008207	Signal transduction histidine kinase, phosphotransfer (Hpt) domain	Domain
A	IPR035891	CheY-binding domain of CheA	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	IPR015162	CheY binding	Domain
A	IPR005467	Histidine kinase domain	Domain
A	IPR036641	HPT domain superfamily	Homologous Superfamily
A	IPR051315	Bacterial Chemotaxis Sensor Histidine Kinase CheA	Family
B [auth Y]	IPR011006	CheY-like superfamily	Homologous Superfamily
B [auth Y]	IPR001789	Signal transduction response regulator, receiver domain	Domain
B [auth Y]	IPR052048	Signal Transduction Response Regulator	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.