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- W1993975070 abstract "Spermidine synthase from Trypanosoma brucei brucei was characterized and found to be similar to spermidine synthase from other sources. The Km for putrescine was found to be 0.2 mM and the Km for decarboxylated S-adenosylmethionine 0.1 microM. The approximate molecular weight of the enzyme was 74 000 as determined by a combination of molecular sieve chromatography and sucrose density gradient centrifugation. Spermidine synthase activity was markedly inhibited in vitro by dicyclohexylamine (50% inhibition at 3 microM) and cyclohexylamine (50% inhibition at 15 microM); both being competitive inhibitors with respect to putrescine. S-Adenosyl-1,8-diamino-3-thiooctane, a nucleoside bisubstrate analog, was also a potent inhibitor of enzyme activity (50% inhibition at 25 microM). Administration of dicyclohexylamine to mice with trypanosomiasis resulted in no increase in survival time probably due to the lack of effect on trypanosome spermidine concentrations. Other possible inhibitors remain to be tested in vivo." @default.
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- W1993975070 date "1984-09-01" @default.
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- W1993975070 title "Characterization of spermidine synthase from Trypanosoma brucei brucei" @default.
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- W1993975070 doi "https://doi.org/10.1016/0166-6851(84)90098-7" @default.
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