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. 2024 Jul 16;15:1445687. doi: 10.3389/fmicb.2024.1445687

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Copyright © 2024 Watkins, Vradi, Shulgina and Musier-Forsyth.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Amino acid specificity of MCP3 and full-length ProRS. Single-turnover kinetics conducted at 27°C with 50 nM aa-tRNA^Pro and 500 nM enzyme. (A) Comparison of Ala-tRNA^Pro deacylase activity of MCP3, ProXp-ala, and FL ProRS. (B) Amino acid specificity of MCP3 (Leu; n = 1). (C) Amino acid specificity of full-length ProRS. Error bars in panels (A–C) represent an average of three independent trials. (D) Amino acids used in the deacylation assays. Colors and symbols correspond to the data shown in panels (B,C). Rate constants are summarized in Tables 1, 2.