Versatile synthesis of probes for high-throughput enzyme activity screening

Area of Science:

• Biochemistry
• Analytical Chemistry
• Chemical Biology

Background:

• Mass spectrometry (MS) based technologies offer high-throughput screening for enzymatic activity.
• Current methods like Nimzyme require custom synthesis of specialized enzyme substrate probes, limiting their application.
• A need exists for a more versatile and efficient method to produce these probes.

Purpose of the Study:

• To develop a simplified synthetic route for producing enzyme activity probes.
• To demonstrate the utility of this new method for a non-carbohydrate-active enzyme.
• To expand the applicability of mass spectrometry-based enzyme activity assays.

Main Methods:

• A novel synthetic strategy was employed, utilizing an alkylating agent to attach the perfluorinated invariant portion of the probe.
• The simplified synthesis allows for the transformation of various compounds into enzyme activity probes.
• Nimzyme technology was used with a custom-synthesized chloramphenicol analog probe.

Main Results:

• A simplified synthetic route for enzyme substrate probes was successfully established.
• The method enabled the detection of chloramphenicol acetyltransferase activity in cell lysate using a custom probe.
• This represents the first reported use of Nimzyme for a non-carbohydrate-active enzyme.

Conclusions:

• The developed synthetic strategy significantly simplifies the production of enzyme activity probes.
• This advancement facilitates the broader application of mass spectrometry for high-throughput enzyme activity determination.
• The findings pave the way for more accessible and versatile enzymatic assays.