Definitions for okadaic acid
A toxin that accumulates in bivalves and causes diarrhetic shellfish poisoning.
Origin: After the marine sponge Halichondria okadai, from which it was first isolated.
U.S. National Library of Medicine
A specific inhibitor of phosphoserine/threonine protein phosphatase 1 and 2a. It is also a potent tumor promoter. (Thromb Res 1992;67(4):345-54 & Cancer Res 1993;53(2):239-41)
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