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Adenylyl cyclases catalyze the production of the second messenger cyclic AMP from ATP. Until now, there has been no fluorescent adenylyl cyclase assay known that is applicable to high-throughput screening and kinetic determinations that can directly monitor the turnover of the unmodified substrate ATP. In this study, a fluorescence-based assay is described using the Ca(II)- and calmodulin-dependent...
A method for optical imaging of the activity of glucose oxidase (GOx) using a fluorescent europium(III) tetracycline probe for hydrogen peroxide is presented. A decay time in the microsecond range and the large Stokes shift of 210nm of the probe facilitate intensity-based, time-resolved, and decay-time-based imaging of glucose oxidase. Four methods for imaging the activity of GOx were compared, and...
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