ISDA

Deposition Date 1995-08-31

Release Date 1996-10-14

Last Version Date 2024-05-22

Entry Detail

PDB ID:

1CNP

Keywords:

CALCIUM-BINDING PROTEIN

Title:

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

Biological Source:

Source Organism:

Oryctolagus cuniculus (Taxon ID: 9986)

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Submitted:

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:CALCYCLIN (RABBIT, APO)
Gene (Uniprot):S100A6
Chain IDs:A, B
Chain Length:90
Number of Molecules:2
Biological Source:Oryctolagus cuniculus

UniProt ID:P30801 Pfam ID:PF01023

Ligand Molecules

Primary Citation

The structure of calcyclin reveals a novel homodimeric fold for S100 Ca(2+)-binding proteins.

Potts, B.C, Smith, J, Akke, M, Macke, T.J, Okazaki, K, Hidaka, H, Case, D.A, Chazin, W.J, Potts, B.C.M, Carlstrom, G, Okazaki, K, Hidaka, H, Chazin, W.J, Tokumitsu, H, Kobayashi, R, Hidaka, H.Show

Nat.Struct.Biol. 2 790 796 (1995)

PMID: 7552751 DOI: 10.1038/nsb0995-790

Abstact

The S100 calcium-binding proteins are implicated as effectors in calcium-mediated signal transduction pathways. The three-dimensional structure of the S100 protein calcyclin has been determined in solution in the apo state by NMR spectroscopy and a computational strategy that incorporates a systematic docking protocol. This structure reveals a symmetric homodimeric fold that is unique among calcium-binding proteins. Dimerization is mediated by hydrophobic contacts from several highly conserved residues, which suggests that the dimer fold identified for calcyclin will serve as a structural paradigm for the S100 subfamily of calcium-binding proteins.

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Disease

Primary Citation of related structures