Fostriecin, an antitumor antibiotic produced by Streptomyces pulveraceus, is a strong inhibitor of type 2A (PP2A; IC50 3.2 nM) and a weak inhibitor of type 1 (PP1; IC50 131 μM) serine/threonine protein phosphatases. Fostriecin has no apparent effect on the activity of PP2B, and dose‐inhibition studies conducted with whole cell homogenates indicate that fostriecin also inhibits the native forms of PP1 and PP2A. Studies with recombinant PP1/PP2A chimeras indicate that okadaic acid and fostriecin have different binding sites.
Fostriecin, an antitumor antibiotic with inhibitory activity against serine/threonine protein phosphatases types 1 (PP1) and 2A (PP2A), is highly selective for PP2A
Aimée H. Walsh,A. Cheng,R. Honkanen
Published 1997 in FEBS Letters
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- Publication year
1997
- Venue
FEBS Letters
- Publication date
1997-10-27
- Fields of study
Biology, Medicine, Chemistry
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Semantic Scholar, PubMed
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