Recombinant Human Carboxypeptidase B/CPB1 is produced with our mammalian expression system in human cells. The target protein is expressed with sequence (His16-Tyr417) of Human CPB1 fused with a polyhistidine tag at the C-terminus.
纯度
> 95 % as determined by reducing SDS-PAGE.
过滤
0.2 μm filtered
内毒素水平
Less than 0.1 ng/μg (1 IEU/μg) as determined by LAL test
It is not recommended to reconstitute to a concentration less than 100 μg/mL. Dissolve the lyophilized protein in ddH2O. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
缓冲液
Supplied as a 0.2 μm filtered solution of 20 mM MES, 150 mM NaCl, pH 5.5.
注意事项
Always centrifuge tubes before opening. Do not mix by vortex or pipetting.
储存条件
-80 °C
储存方法
Store at < -20°C, stable for 6 months after receipt. Please minimize freeze-thaw cycles.
Carboxypeptidase B1 is an exopeptidase which specifically cleaves the C-terminal Arg and Lys residues with a preference for Arg. Expressed mainly in pancreas, CPB1 is a useful serum marker for acute pancreatitis and pancreatic graft rejection.Human CPB1 consists of a signal peptide, a pro region, and a mature chain. The purified rhCPB1 corresponds to the pro form, which can be activated by trypsin, the only pancreatic protease capable of generating active enzyme from the zymogen in vitro. Alternative Names: Carboxypeptidase B, Pancreas-Specific Protein, PASP, CPB1, CPB, PCPB