Structural basis for anticodon recognition by methionyl-tRNA synthetase - PubMed (original) (raw)
doi: 10.1038/nsmb988. Epub 2005 Sep 11.
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- PMID: 16155581
- DOI: 10.1038/nsmb988
Structural basis for anticodon recognition by methionyl-tRNA synthetase
Kotaro Nakanishi et al. Nat Struct Mol Biol. 2005 Oct.
Abstract
In the 2.7-A resolution crystal structure of methionyl-tRNA synthetase (MetRS) in complex with tRNA(Met) and a methionyl-adenylate analog, the tRNA anticodon loop is distorted to form a triple-base stack comprising C34, A35 and A38. A tryptophan residue stacks on C34 to extend the triple-base stack. In addition, C34 forms Watson-Crick-type hydrogen bonds with Arg357. This structure resolves the longstanding question of how MetRS specifically recognizes tRNA(Met).
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