A Toc75-like protein import channel is abundant in chloroplasts

被引：91

作者：

Eckart, K ^{[1
]}

Eichacker, L ^{[1
]}

Sohrt, K ^{[1
]}

Schleiff, E ^{[1
]}

Heins, L ^{[1
]}

Soll, J ^{[1
]}

机构：

[1] Univ Munich, Dept Biol 1, D-80638 Munich, Germany

来源：

EMBO REPORTS | 2002年 / 3卷 / 06期

关键词：

D O I：

10.1093/embo-reports/kvf110

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Chloroplasts import post-translationally most of their constituent polypeptides via two distinct translocon units located in the outer and inner envelope. The protein import channel of the translocon of the outer envelope of chloroplasts, Toc75, is the most abundant protein in that membrane. We identify a novel Toc75 homologous protein, atToc75-V, a prominent protein that is clearly localized in the chloroplastic outer envelope. Phylogenetic analysis indicates that Toc75-V is more closely related to its prokaryotic ancestors than to Toc75 from plants. The presence of a second translocation channel suggests that alternative, previously unrecognized import routes into chloroplasts might exist.

引用

页码：557 / 562

页数：6

共 27 条

[1] ANALYSIS OF THE CHLOROPLAST PROTEIN IMPORT MACHINERY [J].