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The universally conserved endoribonuclease P consists of one RNA subunit and, depending on its origin, a variable number of protein subunits. RNase P is involved in the processing of a large variety of substrates in the cell, the preferred substrate being tRNA precursors. Cleavage activity does not require the presence of the protein subunit(s) in vitro. This is true for both prokaryotic and eukaryotic...
Aminoglycosides are potent inhibitors of bacterial growth and are used clinically as antibiotics. However, their usage has declined in recent years due to the emergence of resistance and severe toxic side effects. Here we show that human poly(A) polymerase γ (PAPγ) is inhibited by aminoglycosides. The inhibition was pH dependent and could be released by Mg(II) ions in a competitive manner suggesting...
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