Structure of a thioredoxin-like [2Fe-2S] ferredoxin from Aquifex aeolicus.
Yeh, A.P., Chatelet, C., Soltis, S.M., Kuhn, P., Meyer, J., Rees, D.C.(2000) J Mol Biol 300: 587-595
- PubMed: 10884354
- DOI: https://doi.org/10.1006/jmbi.2000.3871
- Primary Citation of Related Structures:
1F37 - PubMed Abstract:
The 2.3 A resolution crystal structure of a [2Fe-2S] cluster containing ferredoxin from Aquifex aeolicus reveals a thioredoxin-like fold that is novel among iron-sulfur proteins. The [2Fe-2S] cluster is located near the surface of the protein, at a site corresponding to that of the active-site disulfide bridge in thioredoxin. The four cysteine ligands are located near the ends of two surface loops. Two of these ligands can be substituted by non-native cysteine residues introduced throughout a stretch of the polypeptide chain that forms a protruding loop extending away from the cluster. The presence of homologs of this ferredoxin as components of more complex anaerobic and aerobic electron transfer systems indicates that this is a versatile fold for biological redox processes.
Organizational Affiliation:
Division of Chemistry and Chemical Engineering 147-75CH, California Institute of Technology, Pasadena, CA, 91125, USA.