Trypsin NB Premium Grade, MS approved from porcine pancreas
Modified by reductive methylation, no chymotryptic activity detectable.Specificity verified by digestion of oxidized B-chain of insulin. Qualified for use with in-gel digestion and mass spectrometric analysis. Trypsin NB Premium Grade, MS approved is designed for digestion of proteins prior to mass spectrometric analysis. Reductive methylation of the lysine residues in trypsin provides a stable molecule that is extremely resistant to autolytic digest. Trypsin NB Premium Grade, MS approved is purified by chromatography. No chymotryptic activity is detectable. Each lot is qualified for use with in-gel digestion and mass spectrometric analysis.A Trypsin Peptide (TP) Standard containing tryptic activity to generate masses m/z 842 and 2211 is delivered with each package. TP Standard allows internal calibration for enhancing mass accuracy.