3POW

Crystal structure of the globular domain of human calreticulin

3POW の概要

• エントリーDOI: 10.2210/pdb3pow/pdb
• 関連するPDBエントリー: 3POS
• 分子名称: calreticulin, CALCIUM ION (3 entities in total)
• 機能のキーワード: legume lectin fold, cnx/crt family, multi-functional, carbohydrate binding, peptide binding, multi-compartmental, chaperone
• 由来する生物種: Homo sapiens (human); 詳細
• 細胞内の位置: Endoplasmic reticulum lumen : P27797
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 30186.35

構造登録者

Gaboriaud, C. (登録日: 2010-11-23, 公開日: 2011-03-09, 最終更新日: 2024-10-30)

主引用文献

Chouquet, A.,Paidassi, H.,Ling, W.L.,Frachet, P.,Houen, G.,Arlaud, G.J.,Gaboriaud, C.
X-ray structure of the human calreticulin globular domain reveals a Peptide-binding area and suggests a multi-molecular mechanism
Plos One, 6:e17886-e17886, 2011

PubMed Abstract: In the endoplasmic reticulum, calreticulin acts as a chaperone and a Ca(2+)-signalling protein. At the cell surface, it mediates numerous important biological effects. The crystal structure of the human calreticulin globular domain was solved at 1.55 Å resolution. Interactions of the flexible N-terminal extension with the edge of the lectin site are consistently observed, revealing a hitherto unidentified peptide-binding site. A calreticulin molecular zipper, observed in all crystal lattices, could further extend this site by creating a binding cavity lined by hydrophobic residues. These data thus provide a first structural insight into the lectin-independent binding properties of calreticulin and suggest new working hypotheses, including that of a multi-molecular mechanism.

PubMed: 21423620
DOI: 10.1371/journal.pone.0017886

実験手法

X-RAY DIFFRACTION (1.55 Å)