| Description | Pancreatic lipase when prepared essentially free of colipase is strongly inhibited by conjugated bile salts at or above their critical micell concentration. Addition of colipase restores activity to the bile-salt-inhibited lipase and gel filtration experiments indicate that colipase in bile salt Pancreatic lipase when prepared essentially free of colipase is strongly inhibited by conjugated bile salts at or above their critical micell concentration. Addition of colipase restores activity to the bile-salt-inhibited lipase and gel filtration experiments indicate that colipase in bile salt solution makes a dimer which forms a 1:1 complex with lipase.【Properties】Lipase and colipase interact as a stoichiometrical relationship and classified colipase interact as a co-enzyme for lipase. The colipase is a single chain polypeptide with a molecular weight approximately 11,000 with 5 disulfide bridges and isoelectric point 5.0.【Application】Use Colipase as a co-emulslfier in diagnostic tests for the determination of lipase activity in combination with chromogenic Lipase Substrate.【Attention】For your safety and health, please wear Lab coat and disposable gloves... Read More | Crude collagenase preparations contain several isoforms of two different collagenases, a sulfhydryl protease, clostripain, a trypsin-like enzyme, and an aminopeptidase. This combination of collagenolytic and proteolytic activities is effective at breaking down intercellular matrices, the essential Crude collagenase preparations contain several isoforms of two different collagenases, a sulfhydryl protease, clostripain, a trypsin-like enzyme, and an aminopeptidase. This combination of collagenolytic and proteolytic activities is effective at breaking down intercellular matrices, the essential part of tissue dissociation. One component of the complex is a hydrolytic enzyme which degrades the helical regions in native collagen preferentially at the Y-Gly bond in the sequence Pro-Y-Gly-Pro, where Y is most frequently a neutral amino acid. This cleavage yields products susceptible to further peptidase digestion. Crude collagenase is inhibited by metal chelating agents such as cysteine, EDTA or o-phenanthroline but not DFP. It is also inhibited by α2-macroglobulin, a large plasma glycoprotein. Ca2+ is required for enzyme activity. Particular enzymatic profiles of each collagenase have been correlated with the tissues from which the cells for study were obtained (or with the uses to which the cells are put) and as a result of the correlations several types of crude collagenases have been established by Aladdin: Types 1, 2, 3, and 4.This collagenase has been tested with cell lines to verify the product is not cytotoxic. Collagenase is typically used to digest the connective components in tissue samples to liberate individual cells. The concentration for cartilage dispersal is 1-2 mg/ml, but literature searches should be performed for species specific and/or tissue specific concentrations... Read More | Inquire | Acid phosphatase is an esterase with broad activity at an optimal pH below 7.0. There are three isozymes, EI, EII, and EIII of similar molecular weight (55 kDa± 5 kDa). Their optimum pH's are 5.5, 4.5, and 4.0 respectively. Acid phosphatase activity was observed by Teller Aladdin Library Acid phosphatase is an esterase with broad activity at an optimal pH below 7.0. There are three isozymes, EI, EII, and EIII of similar molecular weight (55 kDa± 5 kDa). Their optimum pH's are 5.5, 4.5, and 4.0 respectively. Acid phosphatase activity was observed by Teller Aladdin Library Archives in 1954 in preparations of a wheat germ lipase described by Singer JBC, 174, 11, in 1948. Equivalent commercial preparations have been distributed labeled as lipase and acid phosphatase thus generating some confusion. Subsequent work has confirmed that the non-specific esterase activity of the wheat germ preparation may be measured both as lipase (triacetin as substrate) and phosphatase. The enzyme assay is based on the work of Brandenberger and Hanson (Helv. Chim. Acta, 36, 900, 1953) and Hofstee ( Arch. Biochem. Biophys., 51, 239, 1954).Acid phosphatase (APase) non-specifically catalyzes the hydrolysis of monoesters and anhydrides of phosphoric acid to produce inorganic phosphate. It is used to study the production, transport, and recycling of phosphate and the metabolic and energy transduction processes of the cell.Characteristics of Acid Phosphatase from Wheat Germ:Molecular weight: 55,000 ± 5,000 (Verjee 1969).Composition: Three isozymes of closely similar molecular weights have been reported by Verjee (1969): EI, EII, and EIII. See also Brouillard and Ouellet (1965).Optimal pH: EI - 5.5, EII - 4.5, and EIII - 4.0. (Verjee 1969).Specificity: The enzyme has a broad esterase activity. See Joyce and Grisolia (1960). It shows highest activity for pyrophosphate.Inhibitors: Fluoride, molybdate and orthophosphate (Verjee 1969)... Read More | SHP2 protein degrader-2 (SHP2-D26) is a SHP2 protein PROTAC degrader. SHP2 protein degrader-2 reduces expression level of SHP2 in various cancer cells.In VitroSHP2 protein degrader-2 (SHP2-D26) achieves excellent degradation of SHP2 with the DC 50 (the concentration where 50% of the protein has beenSHP2 protein degrader-2 (SHP2-D26) is a SHP2 protein PROTAC degrader. SHP2 protein degrader-2 reduces expression level of SHP2 in various cancer cells.In VitroSHP2 protein degrader-2 (SHP2-D26) achieves excellent degradation of SHP2 with the DC 50 (the concentration where 50% of the protein has been degraded) values of 2.6 nM and 6.0 nM for MV4;11 and KYSE520 cells, respectively. MCE has not independently confirmed the accuracy of these methods. They are for reference only.Form:Solid... Read More |