Nitric oxide reductases in bacteria

Janneke Hendriks, Arthur Oubrie, Jose Castresana, Andrea Urbani, Sabine Gemeinhardt, Matti Saraste

Research output: Contribution to journalArticlepeer-review


Nitric oxide reductases (NORs) that are found in bacteria belong to the large enzyme family which includes cytochrome oxidases. Two types of bacterial NORs have been characterised. One is a cytochrome bc-type complex (cNOR) that receives electrons from soluble redox protein donors, whereas the other type (qNOR) lacks the cytochrome c component and uses quinol as the electron donor. The latter enzyme is present in several pathogens that are not denitrifiers. We summarise the current knowledge on bacterial NORs, and discuss the evolutionary relationship between them and cytochrome oxidases in this review. Copyright (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)266-273
Number of pages8
JournalBiochimica et Biophysica Acta - Bioenergetics
Issue number2-3
Publication statusPublished - Aug 15 2000


  • Bacterium
  • Denitrification
  • Evolution
  • Nitric oxide reductase

ASJC Scopus subject areas

  • Biophysics


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