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, we present a highly sensitive and selective LC-MS/MS method to quantify the in vitro JBP1 activity on synthetic oligonucleotide substrates. The method demonstrated successful to support biochemical studies of JBPs and can be used as a template for additional JBP activity studies or for inhibitor screening in the future.
Original language | English |
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Article number | 113930 |
Number of pages | 4 |
Journal | Analytical Biochemistry |
Volume | 610 |
DOIs | |
Publication status | Published - 1 Dec 2020 |
Keywords
- JBP1/2
- LC-MS/MS
- 5-hydroxymethyl-2′ -deoxyuridine
- Base J