Primary structure of desulfoferrodoxin from Desulfovibrio desulfuricans ATCC 27774, a new class of non-heme iron proteins

Bart Devreese, Pedro Tavares, Jorge Lampreia, Nancy Van Damme, Jean Le Gall, José J. G. Moura, Jozef Van Beeumen, Isabel Moura

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

The primary structure of desulfoferrodoxin from Desulfovibrio desulfuricans ATCC 27774, a redox protein with two mononuclear iron sites, was determined by automatic Edman degradation and mass spectrometry of the composing peptides. It contains 125 amino acid residues of which five are cysteines. The first four, Cys-9, Cys-12, Cys-28 and Cys-29, are responsible for the binding of Center I which has a distorted tetrahedral sulfur coordination similar to that found in desulforedoxin from D. gigas. The remaining Cys-115 is proposed to be involved in the coordination of Center II, which is probably octahedrally coordinated with predominantly nitrogen/oxygen containing ligands as previously suggested by Mossbauer and Raman spectroscopy.

Original languageEnglish
Pages (from-to)138-142
Number of pages5
JournalFEBS Letters
Volume385
Issue number3
DOIs
Publication statusPublished - 6 May 1996

Keywords

  • amino acid sequence
  • desulfoferrodoxin
  • desulforedoxin
  • Desulfovibrio
  • non -heme iron
  • rubredoxin

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