Annotations: 1R5Q

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1r5qa_	All alpha proteins	KaiA/RbsU domain	KaiA/RbsU domain	Circadian clock protein KaiA, C-terminal domain	Circadian clock protein KaiA, C-terminal domain	(Nostoc sp. PCC 7120 = FACHB-418 ) [TaxId: 103690 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Circadian clock protein KaiA C-terminal domain	8027973	4000668	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	KaiA/RbsU domain	8040352	3000938	SCOP2 (2022-06-29)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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	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	circadian oscillation regulator	-	rhythmic process circadian rhythm	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011648	Circadian clock oscillator protein KaiA	Family
A	IPR017944	KaiA/RbsU helical domain superfamily	Homologous Superfamily
A	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 R01GM133198.