Selective inhibition of terminal deoxynucleotidyl transferase by diadenosine 5′,5‴-P1,P4-tetraphosphate
✍ Scribed by Katsuhiko Ono; Yukari Iwata; Hiromu Nakamura; Akio Matsukage
- Book ID
- 118314589
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 360 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0006-291X
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The effects of analogs of diadenosine 5',5'''-p1,p4-tetraphosphate (Ap4A) were examined on the ADP-ribosylation reaction of histone H1 catalysed by purified bovine thymus poly(ADP-ribose)transferase. Among the compounds tested, epsilon Ap4A and ApCH2pppA were shown to be the most efficient inhibitor
A simple method for measuring the cellular content of diadenosine 5',5'''-P1,P4-tetraphosphate (Ap4A) in cultured mammalian cells is described. Ap4A was rapidly extracted by dissolving cell monolayers using 0.1 N NaOH. It was separated from the bulk of cellular components in a single step by selecti