6EKB

Crystal structure of the BSD2 homolog of Arabidopsis thaliana

6EKB の概要

• エントリーDOI: 10.2210/pdb6ekb/pdb
• 分子名称: DnaJ/Hsp40 cysteine-rich domain superfamily protein, ZINC ION (3 entities in total)
• 機能のキーワード: zinc finger, assembly chaperone, rubisco, chaperone
• 由来する生物種: Arabidopsis thaliana (Mouse-ear cress)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 8551.70

構造登録者

Aigner, H.,Wilson, R.H.,Bracher, A.,Calisse, L.,Bhat, J.Y.,Hartl, F.U.,Hayer-Hartl, M. (登録日: 2017-09-26, 公開日: 2017-12-06, 最終更新日: 2024-05-08)

主引用文献

Aigner, H.,Wilson, R.H.,Bracher, A.,Calisse, L.,Bhat, J.Y.,Hartl, F.U.,Hayer-Hartl, M.
Plant RuBisCo assembly in E. coli with five chloroplast chaperones including BSD2.
Science, 358:1272-1278, 2017

PubMed Abstract: Plant RuBisCo, a complex of eight large and eight small subunits, catalyzes the fixation of CO in photosynthesis. The low catalytic efficiency of RuBisCo provides strong motivation to reengineer the enzyme with the goal of increasing crop yields. However, genetic manipulation has been hampered by the failure to express plant RuBisCo in a bacterial host. We achieved the functional expression of RuBisCo in by coexpressing multiple chloroplast chaperones. These include the chaperonins Cpn60/Cpn20, RuBisCo accumulation factors 1 and 2, RbcX, and bundle-sheath defective-2 (BSD2). Our structural and functional analysis revealed the role of BSD2 in stabilizing an end-state assembly intermediate of eight RuBisCo large subunits until the small subunits become available. The ability to produce plant RuBisCo recombinantly will facilitate efforts to improve the enzyme through mutagenesis.

PubMed: 29217567
DOI: 10.1126/science.aap9221

実験手法

X-RAY DIFFRACTION (1.9 Å)