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Chemistry · L5 · Competitive ABPP Inhibitor Screening Workflow

How pre-incubating a candidate inhibitor with a proteome before adding an activity-based probe reveals both which enzymes the inhibitor engages and how potently, by measuring the resulting loss of probe labeling signal.

by @openstemUpdated Chemistry
Proteome or live cellsPre-incubate with candidate inhibitor?Add activity-based probe aloneAdd activity-based probe after inhibitorFull labeling signal: baseline activity profileDid inhibitor block the active site?Reduced labeling signal for that enzymeLabeling signal unchanged for that enzymeCompare signals across enzyme familyDetermine inhibitor potency and selectivity profileNo: controlYes: competitionYesNo

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