Download MendeleyA possible iron delivery function of the dinuclear iron center of HcgD in [Fe]-hydrogenase cofactor biosynthesis
Fujishiro, T., Ermler, U., Shima, S.(2014) FEBS Lett 588: 2789-2793
- PubMed: 24931373
- DOI: https://doi.org/10.1016/j.febslet.2014.05.059
- Primary Citation of Related Structures:
3WSD, 3WSE, 3WSF, 3WSG, 3WSH, 3WSI - PubMed Abstract:
HcgD, a homolog of the ubiquitous Nif3-like protein family, is found in a gene cluster involved in the biosynthesis of the iron-guanylylpyridinol (FeGP) cofactor of [Fe]-hydrogenase. The presented crystal structure and biochemical analyses indicated that HcgD has a dinuclear iron-center, which provides a pronounced binding site for anionic ligands. HcgD contains a stronger and a weaker bound iron; the latter being removable by chelating reagents preferentially in the oxidized state. Therefore, we propose HcgD as an iron chaperone in FeGP cofactor biosynthesis, which might also stimulate investigations on the functionally unknown but physiologically important eukaryotic Nif3-like protein family members.
Organizational Affiliation:
Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Straße 10, 35043 Marburg, Germany.
