title: Evolution and diversity of glutaredoxins in photosynthetic organisms.
abstract: The genome sequencing of prokaryotic and eukaryotic photosynthetic organisms enables a comparative genomic study of the glutaredoxin (Grx) family. The analysis of 58 genomes, using a specific motif composed of the active site sequence and of amino acids involved in glutathione binding, led to an updated classification of Grxs into six classes. Only two classes (I and II) are common to all photosynthetic organisms. Eukaryotes and cyanobacteria have two specific Grx classes (classes III and IV and classes V and VI, respectively). The classes IV, V and VI have not yet been identified and contain multimodular Grx fusions. In addition, putative Grx partners were identified from the presence of fusion proteins, the conservation of gene order in bacterial operons, and the gene co-occurrence. The genes encoding class II Grxs and BolA/YrbA proteins are frequently adjacent, in the same transcriptional orientation in prokaryote genomes and present in the same organisms.
authors.affiliation: Interactions Arbres Microorganismes, IFR 110 Génomique Ecophysiologie et Ecologie Fonctionnelles, Unité Mixte de Recherches 1136 INRA-Nancy Université, 54506 Vandoeuvre-lès-Nancy Cedex, France.
authors.forename: Jérémy
authors.initials: J
authors.lastname: Couturier
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Jacquot
authors.forename: Nicolas
authors.initials: N
authors.lastname: Rouhier
mesh_terms: D020418:Algal Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics / Q000378:metabolism; D000818:Animals; D001426:Bacterial Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics / Q000378:metabolism; D020134:Catalytic Domain; D019295:Computational Biology; D019143:Evolution, Molecular; D054477:Glutaredoxins / Q000737:chemistry / Q000145:classification* / Q000235:genetics* / Q000378:metabolism; D008969:Molecular Sequence Data; D010788:Photosynthesis / Q000502:physiology*; D010802:Phylogeny; D010940:Plant Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics / Q000378:metabolism; D017434:Protein Structure, Tertiary; D015800:Protozoan Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism
chemical_list: D020418:Algal Proteins; D001426:Bacterial Proteins; D054477:Glutaredoxins; D010940:Plant Proteins; D015800:Protozoan Proteins; D011993:Recombinant Fusion Proteins