TY  - JOUR
AB  - The unicellular green microalga Chlamydomonas reinhardtii is a powerful photosynthetic model organism which is capable of heterotrophic growth on acetate as a sole carbon source. This capacity has enabled its use for investigations of perturbations in photosynthetic machinery as mutants can be recovered heterotrophically. Fixation of acetate into cellular carbon metabolism occurs first by its conversion into acetyl‐CoA by a respective synthase and the generation of succinate by the glyoxylate cycle. These metabolic steps have been recently determined to largely occur in the peroxisomes of this alga; however, little is known about the trafficking and import of acetate or its subcellular compartmentalization. Recently, the genes of five proteins belonging to the GPR1/FUN34/YaaH (GFY) superfamily were observed to exhibit increased expression in C. reinhardtii upon acetate addition, however, no further characterization has been reported. Here, we provide several lines of evidence to implicate CrGFY1–5 as channels which share structural homology with bacterial succinate‐acetate channels and specifically localize to microbodies, which are surprisingly distinct from the glyoxylate cycle‐containing peroxisomes. We demonstrate structural models, gene expression profiling, and in vivo fluorescence localization of all five isoforms in the algal cell to further support this role.
DA  - 2019
DO  - 10.1002/pld3.148
LA  - eng
IS  - 6
PY  - 2019
SN  - 2475-4455
T2  - Plant Direct
TI  - Characterization of the GPR1/FUN34/YaaH protein family in the green microalga Chlamydomonas suggests their role as intracellular membrane acetate channels
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29362307
Y2  - 2024-11-21T22:28:32
ER  -