Annotations: 3KKB

The crystal structure of a two-component sensor domain from Pseudomonas aeruginosa PA01

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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	Histidine-containing phosphotransfer domain, HPT domain	8091060	3001634	SCOP2B (2022-06-29)
A	SCOP2 Family	Sensor domain of KinB	8046125	4004889	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Histidine-containing phosphotransfer domain, HPT domain	8091060	3001634	SCOP2 (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	ATP-synt_ab_N	e3kkbB1	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: ATP-synt_ab_N	ECOD (v295)
A	Glyco_hydro_28	e3kkbA1	A: alpha arrays	X: Cystatin-like	H: NTF2-like	T: NTF2-like	F: Glyco_hydro_28	ECOD (v295)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.20.120.880	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Histidine kinase (KinB), sensor domain	CATH (4.3.0)
A	1.20.120.880	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Histidine kinase (KinB), sensor domain	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Sensor protein	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 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	carbohydrate metabolic process alginic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process polysaccharide biosynthetic process carbohydrate biosynthetic process carboxylic acid metabolic process primary metabolic process macromolecule biosynthetic process carboxylic acid biosynthetic process polysaccharide metabolic process biosynthetic process small molecule metabolic process metabolic process carbohydrate metabolic process alginic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process polysaccharide biosynthetic process carbohydrate biosynthetic process carboxylic acid metabolic process primary metabolic process macromolecule biosynthetic process carboxylic acid biosynthetic process polysaccharide metabolic process biosynthetic process small molecule metabolic process metabolic process cellular process macromolecule metabolic process	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000014	PAS domain	Domain
A, B	IPR038320	KinB, N-terminal domain superfamily	Homologous Superfamily
A, B	IPR004358	Signal transduction histidine kinase-related protein, C-terminal	Domain
A, B	IPR013656	PAS fold 4	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	IPR035965	PAS domain superfamily	Homologous Superfamily
A, B	IPR003594	Histidine kinase/HSP90-like ATPase domain	Domain
A, B	IPR031909	Alginate biosynthesis sensor protein KinB, sensor domain	Domain
A, B	IPR005467	Histidine kinase domain	Domain
A, B	IPR050980	Two-component sensor histidine kinase	Family

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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.