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Juvenile hormone esterase (JHE), a member of the carboxylesterase family (EC 3.1.1.1), metabolizes JH that is found in juvenile insects. A highly conserved amphipathic alpha helix is found on the surface of known JHEs. This helix is implicated in receptor-mediated binding and endocytosis of JHE by the pericardial cells resulting in the clearance of JHE activity from the hemolymph. In this study, Lys-204...
Some genes cannot be cloned by conventional methods because in most cases the genes or gene products are toxic to Escherichia coli. CCH1 is a high-affinity Ca 2+ channel present in the plasma membrane of Cryptococcus neoformans and other fungi. Like many toxic genes, the molecular cloning of CCH1 has been a major challenge; consequently, direct studies of CCH1 channel activity in heterologous...
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