胰蛋白酶 来源于牛胰腺(0.22 μm,过滤)

Peptidyl peptide hydrolase

T128775-50mg

50mg

EnzymoPure™

≥180 units/mg protein (10,350 BAEE/3,450 USP/NF units/mg protein)

Trypsin is a pancreatic serine protease with substrate specificity based upon positively charged lysine and arginine side chains. It is derived from a 34 kDa inactive precursor zymogen, trypsinogen, after enzymatic removal of an N-terminal 6-amino acid leader sequence resulting in the 23.8 kDa trypsin molecule. The optimum pH is 8.0. Trypsin is inhibited by organophosphorus compounds such as diisopropylfluorophosphate and natural inhibitors from pancreas. Soybean, lima bean, and egg white are also sources of natural inhibitors. Trypsin cleaves amide and ester bonds of Arg and Lys. The Aladdin Sequencing Grade Trypsin has been further purified to remove trace contaminating proteases and autolysis products which could interfere in trypsin digestion experiments, and exhibits a single band on PAGE.对于胰蛋白酶消化肽，胰蛋白酶:肽的使用比例约为1:100至1:20。本品的典型用途是使贴壁细胞从培养表面脱落。 使细胞解离所需的胰蛋白酶浓度主要取决于细胞类型和培养物代数。 Trypsins也被用于细胞培养过程中的细胞再悬浮，在蛋白质组学研究中用于蛋白质的消化，以及在各种凝胶消化中。 其他的应用包括通过基于膜的技术评估结晶，以及在一项研究中确定蛋白质折叠速率和产量可以被动力学陷阱的存在所限制。 Trypsin is a pancreatic serine protease with substrate specificity based upon positively charged lysine and arginine side chains. It is derived from a 34 kDa inactive precursor zymogen, trypsinogen, after enzymatic removal of an N-terminal 6-amino acid leader sequence resulting in the 23.8 kDa trypsin molecule. The optimum pH is 8.0. Trypsin is inhibited by organophosphorus compounds such as diisopropylfluorophosphate and natural inhibitors from pancreas. Soybean, lima bean, and egg white are also sources of natural inhibitors. Trypsin cleaves amide and ester bonds of Arg and Lys. The Aladdin Sequencing Grade Trypsin has been further purified to remove trace contaminating proteases and autolysis products which could interfere in trypsin digestion experiments, and exhibits a single band on PAGE. Trypsin is a serine protease used to hydrolyze proteins. Trypsin from bovine pancreas has a molecular weight of 23.8 kDa. Trypsins are used for the re-suspension of cells during cell culture and in proteomics research for the digestion of various proteins

胰蛋白酶可切割赖氨酸和精氨酸残基的C末端肽段。 如果酸性残基位于切割位点的任意一侧，则该反应的水解速度减慢，并且如果脯氨酸残基位于切割位点的羧基侧，则水解停止。 胰蛋白酶活性的最佳pH条件为7-9。 胰蛋白酶还可以切割氨基酸合成衍生物的酯和酰胺键。 将EDTA添加到胰蛋白酶溶液中作为螯合剂，用于中和钙离子和镁离子以防止其抑制胰蛋白酶活性。 去除这些离子会增加酶活性。 丝氨酸蛋白酶抑制剂（包括DFP、TLCK、APMSF、AEBSEF和抑肽酶等）会抑制胰蛋白酶。