| Literature DB >> 17533454 |
Terry Cathopoulis1, Pitak Chuawong, Tamara L Hendrickson.
Abstract
In nature, ribosomally synthesized proteins can contain at least 22 different amino acids: the 20 common amino acids as well as selenocysteine and pyrrolysine. Each of these amino acids is inserted into proteins codon-specifically via an aminoacyl-transfer RNA (aa-tRNA). In most cases, these aa-tRNAs are biosynthesized directly by a set of highly specific and accurate aminoacyl-tRNA synthetases (aaRSs). However, in some cases aaRSs with relaxed or novel substrate specificities cooperate with other enzymes to generate specific canonical and non-canonical aminoacyl-tRNAs.Entities:
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Year: 2007 PMID: 17533454 DOI: 10.1039/b618899k
Source DB: PubMed Journal: Mol Biosyst ISSN: 1742-2051