1Q6A | pdb_00001q6a

Solution Structure of the C-terminal Domain of Thermosynechococcus elongatus KaiA (ThKaiA180C); Averaged Minimized Structure

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	d1q6ab1	All alpha proteins	KaiA/RbsU domain	KaiA/RbsU domain	Circadian clock protein KaiA, C-terminal domain	Circadian clock protein KaiA, C-terminal domain	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
B	d1q6ab2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
A	d1q6aa1	All alpha proteins	KaiA/RbsU domain	KaiA/RbsU domain	Circadian clock protein KaiA, C-terminal domain	Circadian clock protein KaiA, C-terminal domain	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
A	d1q6aa2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	KaiA/RbsU domain	8041136	3000938	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	KaiA/RbsU domain	8041136	3000938	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	GatB_Yqey	e1q6aB1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: alpha-2-Macroglobulin receptor associated protein (RAP) domain 1	T: alpha-2-Macroglobulin receptor associated protein (RAP) domain 1	F: GatB_Yqey	ECOD (v294.1)
A	GatB_Yqey	e1q6aA1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: alpha-2-Macroglobulin receptor associated protein (RAP) domain 1	T: alpha-2-Macroglobulin receptor associated protein (RAP) domain 1	F: GatB_Yqey	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.1240.30	Mainly Alpha	Orthogonal Bundle	Methyltransferase, Methionine Synthase (B12-binding Domains)	Chain A, domain 1	CATH (4.3.0)
A	1.10.1240.30	Mainly Alpha	Orthogonal Bundle	Methyltransferase, Methionine Synthase (B12-binding Domains)	Chain A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF07688	KaiA C-terminal domain (KaiA)	KaiA C-terminal domain	The cyanobacterial clock proteins KaiA and KaiB are proposed as regulators of the circadian rhythm in cyanobacteria. The overall fold of the KaiA C-terminal domain is that of a four-helix bundle, which forms a dimer in the known structure [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Circadian clock protein KaiA homolog	identical protein binding protein binding binding	rhythmic process circadian rhythm	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR011006	CheY-like superfamily	Homologous Superfamily
A, B	IPR011648	Circadian clock oscillator protein KaiA	Family
A, B	IPR020844	Circadian clock protein KaiA, N-terminal	Domain
A, B	IPR017944	KaiA/RbsU helical domain superfamily	Homologous Superfamily
A, B	IPR020856	Circadian clock oscillator protein KaiA, C-terminal	Domain

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.