Structure of S35C flavodoxin mutant from Desulfovibrio vulgaris in the semiquinone state.
Artali, R., Marchini, N., Meneghetti, F., Cavazzini, D., Cassetta, A., Sassone, C.(2005) Acta Crystallogr D Biol Crystallogr 61: 481-484
- PubMed: 15805604 
- DOI: https://doi.org/10.1107/S0907444905001502
- Primary Citation of Related Structures:  
1XT6 - PubMed Abstract: 
The crystallographic structure of an engineered flavodoxin mutant from Desulfovibrio vulgaris has been analysed. Site-directed mutagenesis was used to substitute serine 35 with a cysteine to provide a possible covalent linkage. The crystal structure of the semiquinone form of this mutant is similar to the corresponding oxidation state of the wild-type flavodoxin. Analysis of the structural changes reveals the interaction between N(5)H of the flavin and the carbonyl O atom of Gly61 to be critical for modulation of the electrochemical properties of the protein.
Organizational Affiliation: 
Institute of Pharmaceutical Chemistry, University of Milano, Italy. roberto.artali@tiscali.it