WrbA bridges bacterial flavodoxins and eukaryotic NAD(P)H:quinone oxidoreductases

Jannette Carey, Jiri Brynda, Julie Wolfová, Rita Grandori, Tobias Gustavsson, Rüdiger Ettrich, Ivana Kutá Smatanová

33 Citations (Scopus)

Abstract

The crystal structure of the flavodoxin-like protein WrbA with oxidized FMN bound reveals a close relationship to mammalian NAD(P)H:quinone oxidoreductase, Nqo1. Structural comparison of WrbA, flavodoxin, and Nqo1 indicates how the twisted open-sheet fold of flavodoxins is elaborated to form multimers that extend catalytic function from one-electron transfer between protein partners using FMN to two-electron reduction of xenobiotics using FAD. The structure suggests a novel physiological role for WrbA and Nqo1.

Original languageEnglish
JournalProtein Science
Volume16
Issue number10
Pages (from-to)2301-5
Number of pages5
ISSN0961-8368
DOIs
Publication statusPublished - Oct 2007

Keywords

  • Binding Sites
  • DNA-Binding Proteins/chemistry
  • Escherichia coli Proteins/chemistry
  • Flavodoxin/chemistry
  • Models, Molecular
  • NAD(P)H Dehydrogenase (Quinone)/chemistry
  • Protein Folding
  • Repressor Proteins/chemistry

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