1PHN

STRUCTURE OF PHYCOCYANIN FROM CYANIDIUM CALDARIUM AT 1.65A RESOLUTION

1PHN の概要

• エントリーDOI: 10.2210/pdb1phn/pdb
• 分子名称: PHYCOCYANIN, PHYCOCYANOBILIN, PHYCOERYTHROBILIN, ... (5 entities in total)
• 機能のキーワード: phycocyanin, phycobilisome, electron transport
• 由来する生物種: Cyanidium caldarium; 詳細
• 細胞内の位置: Plastid, chloroplast thylakoid membrane; Peripheral membrane protein; Stromal side: P00306 P00311
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 37568.40

構造登録者

Stec, B.,Troxler, R.F.,Teeter, M.M. (登録日: 1995-06-21, 公開日: 1997-09-17, 最終更新日: 2024-06-05)

主引用文献

Stec, B.,Troxler, R.F.,Teeter, M.M.
Crystal structure of C-phycocyanin from Cyanidium caldarium provides a new perspective on phycobilisome assembly.
Biophys.J., 76:2912-2921, 1999

PubMed Abstract: The crystal structure of the light-harvesting protein phycocyanin from the cyanobacterium Cyanidium caldarium with novel crystal packing has been solved at 1.65-A resolution. The structure has been refined to an R value of 18.3% with excellent backbone and side-chain stereochemical parameters. In crystals of phycocyanin used in this study, the hexamers are offset rather than aligned as in other phycocyanins that have been crystallized to date. Analysis of this crystal's unique packing leads to a proposal for phycobilisome assembly in vivo and for a more prominent role for chromophore beta-155. This new role assigned to chromophore beta-155 in phycocyanin sheds light on the numerical relationships among and function of external chromophores found in phycoerythrins and phycoerythrocyanins.

PubMed: 10354419

実験手法

X-RAY DIFFRACTION (1.65 Å)