Insights on the Functions and Ecophysiological Relevance of the Diverse Carbonic Anhydrases in Microalgae.

ABSTRACT: Carbonic anhydrases (CAs) exist in all kingdoms of life. They are metalloenzymes, often containing zinc, that catalyze the interconversion of bicarbonate and carbon dioxide-a ubiquitous reaction involved in a variety of cellular processes. So far, eight classes of apparently evolutionary unrelated CAs that are present in a large diversity of living organisms have been described. In this review, we focus on the diversity of CAs and their roles in photosynthetic microalgae. We describe their essential role in carbon dioxide-concentrating mechanisms and photosynthesis, their regulation, as well as their less studied roles in non-photosynthetic processes. We also discuss the presence in some microalgae, especially diatoms, of cambialistic CAs (i.e., CAs that can replace Zn by Co, Cd, or Fe) an

SUBMITTER: Jensen EL 

PROVIDER: S-EPMC7215798 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature