Annotations: 1BU2

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1bu2a1	All alpha proteins	Cyclin-like	Cyclin-like	Cyclin	Viral cyclin	(Herpesvirus saimiri (strain 11) ) [TaxId: 10383 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Cyclin	8025533	4001102	SCOP2 (2022-06-29)
A	SCOP2 Family	Cyclin	8025534	4001102	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cyclin-like	8037912	3000768	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cyclin-like	8037913	3000768	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)
A	Cyclin_N	e1bu2A1	A: alpha arrays	X: HTH	H: HTH	T: Cyclin-like	F: Cyclin_N	ECOD (1.6)
A	Herp-Cyclin	e1bu2A2	A: alpha arrays	X: HTH	H: HTH	T: Cyclin-like	F: Herp-Cyclin	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.472.10	Mainly Alpha	Orthogonal Bundle	Cyclin A	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF09241	Herpesviridae viral cyclin (Herp-Cyclin)	Herpesviridae viral cyclin	Members of this family of viral cyclins adopt a helical structure consisting of five alpha-helices, with one helix surrounded by the others. They specifically activate CDK6 of host cells to a very high degree [1].	Domain
A	PF00134	Cyclin, N-terminal domain (Cyclin_N)	Cyclin, N-terminal domain	Cyclins regulate cyclin dependent kinases (CDKs). Swiss:P22674 is a Uracil-DNA glycosylase that is related to other cyclins [4]. Cyclins contain two domains of similar all-alpha fold, of which this family corresponds with the N-terminal domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CYCLIN HOMOLOG	-	cellular process cell cycle cell division	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR015322	Cyclin domain, herpesvirus	Domain
A	IPR048258	Cyclins, cyclin-box	Conserved Site
A	IPR017285	Cyclin, herpesvirus	Family
A	IPR036915	Cyclin-like superfamily	Homologous Superfamily
A	IPR039361	Cyclin	Family
A	IPR013763	Cyclin-like domain	Domain
A	IPR006671	Cyclin, N-terminal	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.