Postsynthetic modifications are widespread in genetic regulation. Trm9-mediated modification of the anticodon wobble base of specific tRNAs modulates expression of DNA damage response mRNAs in which cognate codons are unusually overrepresented. Thus, modification-dependent tRNA decoding activity is keyed to codon use in a genetic program.
- Richard J Maraia
- Nathan H Blewett
- Mark A Bayfield