Enzyme family-specific and activity-based screening of chemical libraries using enzyme microarrays

Daniel P. Funeriu*, Jorg Eppinger, Lucile Denizot, Masato Miyake, Jun Miyake

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

The potential of protein microarrays in high-throughput screening (HTS) still remains largely unfulfilled, essentially because of the difficulty of extracting meaningful, quantitative data from such experiments. In the particular case of enzyme microarrays, low-molecular-weight fluorescent affinity labels (FALs) can function as ideally suited activity probes of the microarrayed enzymes. FALs form covalent bonds with enzymes in an activity-dependent manner and therefore can be used to characterize enzyme activity at each enzyme's address, as predetermined by the microarraying process. Relying on this principle, we introduce herein thematic enzyme microarrays (TEMA). In a kinetic setup we used TEMAs to determine the full set of kinetic constants and the reaction mechanism between the microarrayed enzymes (the theme of the microarray) and a family-wide FAL. Based on this kinetic understanding, in an HTS setup we established the practical and theoretical methodology for quantitative, multiplexed determination of the inhibition profile of compounds from a chemical library against each microarrayed enzyme. Finally, in a validation setup, Kiapp values and inhibitor profiles were confirmed and refined.

Original languageEnglish (US)
Pages (from-to)622-627
Number of pages6
JournalNature Biotechnology
Volume23
Issue number5
DOIs
StatePublished - Dec 12 2005

ASJC Scopus subject areas

  • Microbiology

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