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Trypsin/Lys-C Mix, Mass Spec Grade, is a mixture of Trypsin Gold, Mass Spectrometry Grade, and rLys-C, Mass Spec Grade. The Trypsin/Lys-C Mix is designed to improve digestion of proteins or protein mixtures in solution.
Using the conventional trypsin digestion protocol (i.e., overnight incubation at nondenaturing conditions), Trypsin/Lys-C Mix improves protein digestion by eliminating the majority of missed cleavages, which occur at prominent quantities in trypsin digests. Trypsin/Lys-C Mix enhances digestion and compensates for the trypsin proteolytic inefficiency at lysine sites (Figure 1).
Replacing trypsin ...
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Replacing trypsin with Trypsin/Lys-C Mix in this conventional protocol leads to multiple benefits for protein analysis including more accurate mass spectrometry-based protein quantitation and improved protein mass spectrometry analytical reproducibility. Trypsin/Lys-C Mix also provides greater tolerance to trypsin-inhibiting agents, assuring efficient digestion of proteins for which protein purification is limited or not feasible.
Trypsin/Lys-C Mix, Mass Spec Grade
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This product is available through the Promega Helix onsite stocking program in a –20°C Helix Freezer. The program offers numerous convenient solutions to meet your lab's needs. Helix Freezers are available in two sizes: 5.7 cubic ft. or 9.7 cubic ft.
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Store Trypsin/Lys-C Mix, Mass Spec Grade, at –30°C to –10°C.
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Incomplete digestion with trypsin was evident after comparing peptide peak intensities in trypsin and Trypsin/Lys-C Mix digests.
The extract contained a residual amount of methanol and chloroform, which inhibits trypsin, but not Trypsin/Lys-C Mix digestion.
V5071, V5072, V5073 For Research Use Only. Not for Use in Diagnostic Procedures.
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