2QKE | pdb_00002qke

Wild Type Crystal Structure of Full Length Circadian Clock Protein KaiB from Thermosynechococcus elongatus BP-1

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)
A	d2qkea_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	KaiB-like	automated matches	(Synechococcus elongatus ) [TaxId: 32046 ],	SCOPe (2.08)
B	d2qkeb_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	KaiB-like	automated matches	(Synechococcus elongatus ) [TaxId: 32046 ],	SCOPe (2.08)
C	d2qkec_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	KaiB-like	automated matches	(Synechococcus elongatus ) [TaxId: 32046 ],	SCOPe (2.08)
D	d2qked_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	KaiB-like	automated matches	(Synechococcus elongatus ) [TaxId: 32046 ],	SCOPe (2.08)
E	d2qkee_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	KaiB-like	automated matches	(Synechococcus elongatus ) [TaxId: 32046 ],	SCOPe (2.08)
F	d2qkef_	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	KaiB-like	automated matches	(Synechococcus elongatus ) [TaxId: 32046 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Thioredoxin-like	8084499	3000031	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Thioredoxin-like	8084499	3000031	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Thioredoxin-like	8084499	3000031	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Thioredoxin-like	8084499	3000031	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Thioredoxin-like	8084499	3000031	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Thioredoxin-like	8084499	3000031	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	KaiB	e2qkeA1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: KaiB	ECOD (1.6)
B	KaiB	e2qkeB1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: KaiB	ECOD (1.6)
C	KaiB	e2qkeC1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: KaiB	ECOD (1.6)
D	KaiB	e2qkeD1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: KaiB	ECOD (1.6)
E	KaiB	e2qkeE1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: KaiB	ECOD (1.6)
F	KaiB	e2qkeF1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: KaiB	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
B	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
C	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
D	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
E	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
F	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF07689	KaiB domain (KaiB)	KaiB domain	The cyanobacterial clock proteins KaiA and KaiB are proposed as regulators of the circadian rhythm in cyanobacteria. Mutations in both proteins have been reported to alter or abolish circadian rhythmicity. KaiB adopts an alpha-beta meander motif and ...	The cyanobacterial clock proteins KaiA and KaiB are proposed as regulators of the circadian rhythm in cyanobacteria. Mutations in both proteins have been reported to alter or abolish circadian rhythmicity. KaiB adopts an alpha-beta meander motif and is found to be a dimer [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	Circadian clock protein kaiB	identical protein binding protein binding binding	rhythmic process circadian rhythm	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR039022	Circadian clock protein KaiB-like	Family
A, B, C, D, E A, B, C, D, E, F	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR011649	KaiB domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR013474	Circadian clock protein KaiB	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.