Publications by authors named "Thomas A Witt"
Article Synopsis
- Photosystem I (PSI) exists as trimeric complexes in most cyanobacteria but as monomers in plants and algae, with recent reports indicating the presence of tetrameric PSI that raises various questions.
- A study of 61 cyanobacteria found that tetrameric PSI is common among heterocyst-forming cyanobacteria and is linked to the psaL gene and specific genomic features.
- Physiological experiments suggest that tetrameric PSI is advantageous in high light conditions due to the presence of unique PSI-bound carotenoids, supporting the idea that tetrameric PSI may represent an evolutionary step between the trimeric form in cyanobacteria and the monomeric form in plants and algae.
