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|Section2= |Section3= }} Tautomycin is a chemical that occurs naturally in shellfish and is produced by the bacterium ''Streptomyces spiroverticillatus''. It is a polyketide-based structure characterized by a three hydroxyl groups, two ketones, a dialkylmaleic anhydride, an ester linkage (connecting anhydride unit to polyketide chain), a spiroketal and one methyl ether among others. ==Pharmacology== It is a very potent inhibitor of the protein phosphatases PP1 and PP2A. Tautomycin demonstrates a slight preference for PP1 inhibition relative to PP2A inhibition. Tautomycin is closely related to another anhydride containing polyketide PP inhibitor called Tautomycetin which, in addition to being useful as a lead for cancer drug discovery, also is a very potent immunosuppressor. The mechanism of immunosuppression by Tautomycetin differs from that of more classical immunosuppressors such as rapamycin and FK506. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tautomycin」の詳細全文を読む スポンサード リンク
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