1CNP

THE STRUCTURE OF CALCYCLIN REVEALS A NOVEL HOMODIMERIC FOLD FOR S100 CA2+-BINDING PROTEINS, NMR, 22 STRUCTURES

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 Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1cnpa_	All alpha proteins	EF Hand-like	EF-hand	S100 proteins	Calcyclin (S100)	(Oryctolagus cuniculus ) [TaxId: 9986 ],	SCOPe (2.08)
B	d1cnpb_	All alpha proteins	EF Hand-like	EF-hand	S100 proteins	Calcyclin (S100)	(Oryctolagus cuniculus ) [TaxId: 9986 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	EF-hand	8037272	3001983	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	EF-hand	8037272	3001983	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	S_100	e1cnpA1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: S_100	ECOD (1.6)
B	S_100	e1cnpB1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: S_100	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.238.10	Mainly Alpha	Orthogonal Bundle	Recoverin	domain 1	CATH (4.3.0)
B	1.10.238.10	Mainly Alpha	Orthogonal Bundle	Recoverin	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01023	S-100/ICaBP type calcium binding domain (S_100)	S-100/ICaBP type calcium binding domain	The S-100 domain is a subfamily of the EF-hand calcium binding proteins.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	CALCYCLIN (RABBIT, APO)	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	-	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle intracellular organelle organelle envelope organelle nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system cell periphery cytoplasmic side of plasma membrane intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle intracellular organelle organelle envelope organelle nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system cell periphery cytoplasmic side of plasma membrane cytoplasmic side of membrane membrane plasma membrane side of membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR013787	S100/CaBP-9k-type, calcium binding, subdomain	Domain
A, B	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
A, B	IPR001751	S100/Calcium binding protein 7/8-like, conserved site	Conserved Site
A, B	IPR034118	Protein S100-A6	Family
A, B	IPR002048	EF-hand domain	Domain
A, B	IPR011992	EF-hand domain pair	Homologous Superfamily

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.