Exploring the Link between Photosystem II Assembly and Translation of the Chloroplast psbA mRNA.

ABSTRACT: Photosystem II (PSII) in chloroplasts and cyanobacteria contains approximately fifteen core proteins, which organize numerous pigments and prosthetic groups that mediate the light-driven water-splitting activity that drives oxygenic photosynthesis. The PSII reaction center protein D1 is subject to photodamage, whose repair requires degradation of damaged D1 and its replacement with nascent D1. Mechanisms that couple D1 synthesis with PSII assembly and repair are poorly understood. We address this question by using ribosome profiling to analyze the translation of chloroplast mRNAs in maize and Arabidopsis mutants with defects in PSII assembly. We found that OHP1, OHP2, and HCF244, which comprise a recently elucidated complex involved in PSII assembly and repair, are each required for the re

SUBMITTER: Chotewutmontri P 

PROVIDER: S-EPMC7076361 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature