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Título: | Structural and Phylogenetic Analysis of Rhodobacter capsulatus NifF: Uncovering General Features of Nitrogen-fixation (nif)-Flavodoxins |
Autor: | Pérez-Dorado, Inmaculada CSIC ORCID; Bortolotti, Ana; Cortez, Néstor; Hermoso, Juan A. CSIC ORCID | Palabras clave: | Flavodoxin Nitrogen fixation Crystal structures Phylogenetic analysis |
Fecha de publicación: | 9-ene-2013 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | International Journal of Molecular Sciences 14(1): 1152-1163 (2013) | Resumen: | Analysis of the crystal structure of NifF from Rhodobacter capsulatus and its homologues reported so far reflects the existence of unique structural features in nif flavodoxins: a leucine at the re face of the isoalloxazine, an eight-residue insertion at the C-terminus of the 50’s loop and a remarkable difference in the electrostatic potential surface with respect to non-nif flavodoxins. A phylogenetic study on 64 sequences from 52 bacterial species revealed four clusters, including different functional prototypes, correlating the previously defined as “short-chain” with the firmicutes flavodoxins and the “long-chain” with gram-negative species. The comparison of Rhodobacter NifF structure with other bacterial flavodoxin prototypes discloses the concurrence of specific features of these functional electron donors to nitrogenase. | Versión del editor: | https://doi.org/10.3390/ijms14011152 | URI: | http://hdl.handle.net/10261/158519 | DOI: | 10.3390/ijms14011152 | ISSN: | 1661-6596 |
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