Nitric oxide-forming nitrite reductases in the anaerobic ammonium oxidizer Kuenenia stuttgartiensis.

ABSTRACT: Anaerobic ammonium-oxidizing (anammox) bacteria contribute to the global nitrogen cycle by removing fixed nitrogen from the environment. They do so via the anaerobic oxidation of ammonium to dinitrogen gas, with nitrite as terminal electron acceptor. The first step in this so-called anammox reaction is the proposed conversion of nitrite to nitric oxide by a nitrite reductase. There is an unusual diversity and redundancy in anammox nitrite reductases and to gain more insight into the puzzling redundancy and diversity, we investigated the putative reductases in the model anammox species 'Candidatus Kuenenia stuttgartiensis'. The genome of this model anammox species encodes for three putative nitrite reductases and we investigated which of these is or are active in K. stuttgartiensis strain M

SUBMITTER: Vermeir FJ 

PROVIDER: S-EPMC12485887 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature