Chloroplast Methyltransferase Homolog RMT2 is Involved in Photosystem I Biogenesis.

ABSTRACT: Oxygen (O₂), a dominant element in the atmosphere and essential for most life on Earth, is produced by the photosynthetic oxidation of water. However, metabolic activity can cause accumulation of reactive O₂ species (ROS) and severe cell damage. To identify and characterize mechanisms enabling cells to cope with ROS, we performed a high-throughput O₂ sensitivity screen on a genome-wide insertional mutant library of the unicellular alga Chlamydomonas reinhardtii. This screen led to identification of a gene encoding a protein designated Rubisco methyltransferase 2 (RMT2). Although homologous to methyltransferases, RMT2 has not been experimentally demonstrated to have methyltransferase activity. Furthermore, the rmt2 mutant was not compromised fo

SUBMITTER: Kim RG 

PROVIDER: S-EPMC10769443 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature