In eubacteria, decoding of isoleucine codon AUA requires a specialized tRNA (tRNAIle2) modified with lysidine (k2C) at the anticodon wobble position (C34), which switches decoding specificity from methionine (AUG) to isoleucine (AUA). Recently, aminovaleramide cytidine (ava2C) was discovered at the same tRNA position i...
Jing-Jing Sun, Jun-Zhou Wu, Yi-Feng Yuan et al.· Nature Chemical Biology· 0 citations
The authors develop proteomics-style, RNA-specific isobaric tandem mass tags for quantitative RNA modification mapping by mass spectrometry, revealing condition-dependent changes and interdependencies among modification pathways.
A critical molecular checkpoint is discovered that acts as a physical anchor, linking the bacterial chromosome to the cell envelope to ensure that chromosome replication is synchronized with cell division, and a single mutation in the replication machinery can fully bypass the loss of this anchor.
Courtney Dover, Kipa Tamrakar, Bikash Dwivedi et al.· bioRxiv· 0 citations
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