Functional interactions between nitrite reductase and nitric oxide reductase from Paracoccus denitrificans.

ABSTRACT: Denitrification is a microbial pathway that constitutes an important part of the nitrogen cycle on earth. Denitrifying organisms use nitrate as a terminal electron acceptor and reduce it stepwise to nitrogen gas, a process that produces the toxic nitric oxide (NO) molecule as an intermediate. In this work, we have investigated the possible functional interaction between the enzyme that produces NO; the cd₁ nitrite reductase (cd₁NiR) and the enzyme that reduces NO; the c-type nitric oxide reductase (cNOR), from the model soil bacterium P. denitrificans. Such an interaction was observed previously between purified components from P. aeruginosa and could help channeling the NO (directly from the site of formation to the side of reduction), in order to protect the cell fr

SUBMITTER: Albertsson I 

PROVIDER: S-EPMC6872814 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature