Retentate chromatography and protein chip arrays with applications in biology and medicine
First Claim
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1. A method of detecting an enzyme in a sample, comprising:
- a) providing a mass spectrometry probe comprising an adsorbent and an enzyme substrate bound to the adsorbent, wherein the activity of the enzyme on the enzyme substrate produces a product having a characteristic molecular mass;
b) exposing the substrate to the sample; and
c) detecting the product by desorption spectrometry, wherein detecting the product provides a detection of the enzyme, thereby detecting the enzyme in the sample.
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Abstract
This invention provides methods of retentate chromatography for resolving analytes in a sample. The methods involve adsorbing the analytes to a substrate under a plurality of different selectivity conditions, and detecting the analytes retained on the substrate by desorption spectrometry. The methods are useful in biology and medicine, including clinical diagnostics and drug discovery.
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11 Claims
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1. A method of detecting an enzyme in a sample, comprising:
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a) providing a mass spectrometry probe comprising an adsorbent and an enzyme substrate bound to the adsorbent, wherein the activity of the enzyme on the enzyme substrate produces a product having a characteristic molecular mass; b) exposing the substrate to the sample; and c) detecting the product by desorption spectrometry, wherein detecting the product provides a detection of the enzyme, thereby detecting the enzyme in the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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