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P-glycoprotein gene amplification has been described in several drug-resistant parasitic protozoa. The first P-glycoprotein related gene described in Leishmania was ltpgpA, a gene frequently amplified in arsenite resistant Leishmania. Hybridization experiments indicated that ltpgpA was part of a gene family. In addition to ltpgpA, four novel genes were(More)
The H circle of Leishmania species contains a 30 kb inverted duplication separated by two unique DNA segments, a and b. The corresponding H region of chromosomal DNA has only one copy of the duplicated DNA. We show here that the chromosomal segments a and b are flanked by inverted repeats (198 and 1241 bp) and we discuss how these repeats could lead to(More)
NBP (nitrogen-containing bisphosphonate) drugs protect against excessive osteoclast-mediated bone resorption. After binding to bone mineral, they are taken up selectively by the osteoclasts and inhibit the essential enzyme FDPS (farnesyl diphosphate synthase). NBPs inhibit also growth of amoebae of Dictyostelium discoideum in which their target is again(More)
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