3VWW

Crystal structure of a0-domain of P5 from H. sapiens

3VWW の概要

• エントリーDOI: 10.2210/pdb3vww/pdb
• 関連するPDBエントリー: 2dml 3VWU 3VWV 3W8J
• 分子名称: Protein disulfide-isomerase A6, PHOSPHATE ION (3 entities in total)
• 機能のキーワード: pdi family member, thioredoxin fold, protein disulfide isomerase, isomerase
• 由来する生物種: Homo sapiens (human)
• 細胞内の位置: Endoplasmic reticulum lumen (By similarity): Q15084
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 25900.89

構造登録者

Inaba, K.,Suzuki, M. (登録日: 2012-09-03, 公開日: 2013-09-04, 最終更新日: 2025-03-26)

主引用文献

Sato, Y.,Kojima, R.,Okumura, M.,Hagiwara, M.,Masui, S.,Maegawa, K.,Saiki, M.,Horibe, T.,Suzuki, M.,Inaba, K.
Synergistic cooperation of PDI family members in peroxiredoxin 4-driven oxidative protein folding
Sci Rep, 3:2456-2456, 2013

PubMed Abstract: The mammalian endoplasmic reticulum (ER) harbors disulfide bond-generating enzymes, including Ero1α and peroxiredoxin 4 (Prx4), and nearly 20 members of the protein disulfide isomerase family (PDIs), which together constitute a suitable environment for oxidative protein folding. Here, we clarified the Prx4 preferential recognition of two PDI family proteins, P5 and ERp46, and the mode of interaction between Prx4 and P5 thioredoxin domain. Detailed analyses of oxidative folding catalyzed by the reconstituted Prx4-PDIs pathways demonstrated that, while P5 and ERp46 are dedicated to rapid, but promiscuous, disulfide introduction, PDI is an efficient proofreader of non-native disulfides. Remarkably, the Prx4-dependent formation of native disulfide bonds was accelerated when PDI was combined with ERp46 or P5, suggesting that PDIs work synergistically to increase the rate and fidelity of oxidative protein folding. Thus, the mammalian ER seems to contain highly systematized oxidative networks for the efficient production of large quantities of secretory proteins.

PubMed: 23949117
DOI: 10.1038/srep02456

実験手法

X-RAY DIFFRACTION (1.93 Å)