Download MendeleyStructural and functional characterization of the hydrogenase-maturation HydF protein.
Caserta, G., Pecqueur, L., Adamska-Venkatesh, A., Papini, C., Roy, S., Artero, V., Atta, M., Reijerse, E., Lubitz, W., Fontecave, M.(2017) Nat Chem Biol 13: 779-784
- PubMed: 28553946
- DOI: https://doi.org/10.1038/nchembio.2385
- Primary Citation of Related Structures:
5KH0, 5LAD - PubMed Abstract:
[FeFe] hydrogenase (HydA) catalyzes interconversion between 2H + and H 2 at an active site composed of a [4Fe-4S] cluster linked to a 2Fe subcluster that harbors CO, CN - and azapropanedithiolate (adt 2- ) ligands. HydE, HydG and HydF are the maturases specifically involved in the biosynthesis of the 2Fe subcluster. Using ligands synthesized by HydE and HydG, HydF assembles a di-iron precursor of the 2Fe subcluster and transfers it to HydA for maturation. Here we report the first X-ray structure of HydF with its [4Fe-4S] cluster. The cluster is chelated by three cysteines and an exchangeable glutamate, which allows the binding of synthetic mimics of the 2Fe subcluster. [Fe 2 (adt)(CO) 4 (CN) 2 ] 2- is proposed to be the true di-iron precursor because, when bound to HydF, it matures HydA and displays features in Fourier transform infrared (FTIR) spectra that are similar to those of the native HydF active intermediate. A new route toward the generation of artificial hydrogenases, as combinations of HydF and such biomimetic complexes, is proposed on the basis of the observed hydrogenase activity of chemically modified HydF.
- Laboratoire de Chimie des Processus Biologiques, Collège de France, Université Pierre et Marie Curie, CNRS UMR 8229, Paris, France.
Organizational Affiliation:
