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. 2017 Jul 21;45(15):9019–9029. doi: 10.1093/nar/gkx620

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© The Author(s) 2017. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 1. — Trm10 catalyzes m¹G₉ formation in tRNA. (A) Representative cloverleaf structure of tRNA showing position of the G₉ residue that is the target for Trm10 methylation. (B) Trm10 uses S-adenosylmethionine (SAM) as the donor of the methyl group to form m¹G₉. A protein residue (D210 in ScTrm10) has been proposed to serve as a general base (indicated by GB:) to abstract the proton from the N1 target atom for methylation.