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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Wydau, Sandra Van Der Rest, Guillaume Aubard, Caroline Plateau, Pierre Blanquet, Sylvain |
| Description | Author Affiliation: Wydau S ( Laboratoire de Biochimie and Laboratoire des Mécanismes Réactionnels, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France.) |
| Abstract | Several l-aminoacyl-tRNA synthetases can transfer a d-amino acid onto their cognate tRNA(s). This harmful reaction is counteracted by the enzyme d-aminoacyl-tRNA deacylase. Two distinct deacylases were already identified in bacteria (DTD1) and in archaea (DTD2), respectively. Evidence was given that DTD1 homologs also exist in nearly all eukaryotes, whereas DTD2 homologs occur in plants. On the other hand, several bacteria, including most cyanobacteria, lack genes encoding a DTD1 homolog. Here we show that Synechocystis sp. PCC6803 produces a third type of deacylase (DTD3). Inactivation of the corresponding gene (dtd3) renders the growth of Synechocystis sp. hypersensitive to the presence of d-tyrosine. Based on the available genomes, DTD3-like proteins are predicted to occur in all cyanobacteria. Moreover, one or several dtd3-like genes can be recognized in all cellular types, arguing in favor of the nearubiquity of an enzymatic function involved in the defense of translational systems against invasion by d-amino acids. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 21 |
| Volume Number | 284 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2009-05-22 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | RNA, Transfer, Amino Acyl Metabolism Synechocystis Cytology Enzymology Aminoacyltransferases Genetics Isolation & Purification Biocatalysis Drug Effects Chromosomes, Bacterial Complex Mixtures Escherichia Coli Growth & Development Gene Silencing Genes, Bacterial Ions Pharmacology Phylogeny Sequence Homology, Amino Acid Substrate Specificity Tyrosine Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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