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Showing 1 to 1 of 1 for “"22nd Amino Acid"”.
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STUDIES OF THE PYRROLYSYL-TRNA SYNTHETASE
… spp. led to the discovery of pyrrolysine, the 22nd amino acid encoded by the UAG codon. Pyrrolysyl-tRNA synthetase (PylS) is the specific enzyme that can attach Pyl to its cognate tRNA, the amber suppressor tRNAPyl. The biosynthesis of pyrrolysine required the function of three genes, pylC, …