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. 1995 Jan 1;305(Pt 1):133–137. doi: 10.1042/bj3050133

Sinefungin shares AdoMet-uptake system to enter Leishmania donovani promastigotes.

M A Phelouzat 1, M Basselin 1, F Lawrence 1, M Robert-Gero 1
PMCID: PMC1136440  PMID: 7826320

Abstract

The involvement of a carrier for sinefungin (SF) uptake in Leishmania donovani promastigotes is indicated by saturation kinetics, competition studies and SF accumulation against a 270-fold concentration gradient across the cell membrane. Whether SF uptake occurs via nucleoside- or AdoMet-carrier systems was investigated by competition experiments and comparison of the uptake of various molecules in wild-type and SF-resistant cells. Results show that SF did not inhibit purine or pyrimidine uptake whereas it competitively inhibited AdoMet uptake. Furthermore, the uptake of nucleosides in SF-resistant cells is similar to that in wild-type cells, whereas uptake of SF and AdoMet is lower.

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Selected References

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