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My laboratory has two main interests: 1) Regulation of P2Y receptor signaling and trafficking in epithelial cells and platelets. Our laboratory investigates the cellular and molecular mechanisms by which P2Y receptors are differentially targeted to distinct membrane surfaces of polarized epithelial cells and the regulation of P2Y receptor signaling during ADP-promoted platelet aggregation. 2) Antibiotic resistance mechanisms. We investigate the mechanisms of antibiotic resistance in the pathogenic bacterium, Neisseria gonorrhoeae. Our laboratory investigates how acquisition of mutant alleles of existing genes confers resistance to penicillin and cephalosporins. We also study the biosynthesis of the gonococcal Type IV pilus and its contribution to antibiotic resistance.