Loss of mature D1 leads to compromised CP43 assembly in Arabidopsis thaliana.

ABSTRACT:

Background

Photosystem II (PSII) is a highly conserved integral-membrane multi-subunit pigment-protein complex. The proteins, pigments, lipids, and ions in PSII need to be assembled precisely to ensure a proper PSII biogenesis. D1 is the main subunit of PSII core reaction center (RC), and is usually synthesized as a precursor D1. D1 maturation by the C-terminal processing protease CtpA is essential for PSII assembly. However, the detailed mechanism about how D1 maturation affects PSII assembly is not clearly elucidated so far. In this study, Arabidopsis thaliana CtpA mutant (atctpa: SALK_056011), which lacks the D1 mature process, was used to investigate the function of this process on PSII assembly in more details.

Results

Without the C-terminal processing of precursor D1,

SUBMITTER: Shi Y 

PROVIDER: S-EPMC7896377 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature