Abstract
Base J replaces 1% of thymine in most kinetoplastid flagellates, and is implicated in transcription regulation. Base J is synthesized in two steps: first, a thymine base in DNA is converted to 5-hydroxymethyluracil by J-binding proteins (JBP1, JBP2); secondly, a glucosyl transferase glycosylates the 5-hydroxymethyluracil to form base J. Here,
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