2fgo
From Proteopedia
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Structure of the 2[4FE-4S] ferredoxin from Pseudomonas aeruginosa
Overview
The structure of the 2[4Fe-4S] ferredoxin (PaFd) from Pseudomonas, aeruginosa, which belongs to the Allochromatium vinosum (Alvin) subfamily, has been determined by X-ray crystallography at 1.32-A resolution, which, is the highest up to now for a member of this subfamily of Fds. The main, structural features of PaFd are similar to those of AlvinFd. However, the, significantly higher resolution of the PaFd structure makes possible a, reliable comparison with available high-resolution structures of, [4Fe-4S]-containing Fds, in an effort to rationalize the unusual, electrochemical properties of Alvin-like Fds. Three major factors, contributing to the reduction potential values of [4Fe-4S]2+/+ clusters of, Fds, namely, the surface accessibility of the clusters, the N-H...S, hydrogen-bonding network, and the volume of the cavities hosting the, clusters, are extensively discussed. The volume of the cavities is, introduced in the present work for the first time, and can in part explain, the very negative potential of cluster I of Alvin-like Fds.
About this Structure
2FGO is a Single protein structure of sequence from Pseudomonas aeruginosa with as ligand. Full crystallographic information is available from OCA.
Reference
The structure of the 2[4Fe-4S] ferredoxin from Pseudomonas aeruginosa at 1.32-A resolution: comparison with other high-resolution structures of ferredoxins and contributing structural features to reduction potential values., Giastas P, Pinotsis N, Efthymiou G, Wilmanns M, Kyritsis P, Moulis JM, Mavridis IM, J Biol Inorg Chem. 2006 Jun;11(4):445-58. Epub 2006 Apr 5. PMID:16596388[[Category: [4fe-4s] cluster]]
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