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lysine--tRNA ligase
Class II; LysRS2; catalyzes a two-step reaction, first charging a lysine molecule by linking its carboxyl group to the alpha-phosphate of ATP, followed by transfer of the aminoacyl-adenylate to its tRNA; in Methanosarcina barkeri, LysRS2 charges both tRNA molecules for lysine that exist in this organism and in addition can charge the tRNAPyl with lysine in the presence of LysRS1
This model represents the lysyl-tRNA synthetases that are class II amino-acyl tRNA synthetases. It includes all eukaryotic and most bacterial examples of the enzyme, but not archaeal or spirochete forms.
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