Purified recombinant Human Carbonic anhydrase II protein Expression System: E.coli Bioactivity: Specific activity is 50-70 nmoles/min/µg and was obtained by measuring the increase in the amount of p-nitropheno by its esterase activity. Specific activity is defined as the amount of p-nitrophenol that 1ug of enzyme can reduce at 25 °C for 1 minute. Molecular weight on SDS-PAGE will appear higher.
Carbonic anhydrase II protein has been used in SDS PAGE and may be suitable for use in other assays to be determined by the end user.
实验流程
Prepare assay buffer into a suitable container: The final concentrations are 12.5 mM Tris, 75 mM NaCl, pH 7.5. 2. Dilute 4-Nitrophenyl-Acetate(4-NPA) to 2 mM in Assay Buffer. 3. Dilute recombinant CA2 protein with various concentrations (1 µg, 1 µg, 1 µg) in 50 µL assay buffer. 4. Load 50 uL of 2 mM 4-NPA into diluted recombinant CA2 solutions, and start the reaction by adding 50 uL of 2 mM Substrate. 5. Read at a wavelength of 405 nm (bottom read) in kinetic mode for 5 minutes.
限制
仅限研究用
状态
Liquid
浓度
1 mg/mL
缓冲液
Supplied as a liquid in 20 mM Tris-HCl buffer, pH 8.0, containing 0 mM DTT, 50 mM NaCl, and 10 % glycerol.
储存液
Dithiothreitol (DTT)
注意事项
This product contains Dithiothreitol: a POISONOUS AND HAZARDOUS SUBSTANCE, which should be handled by trained staff only.
注意事项
Avoid repeated freeze/thaw cycles.
储存条件
RT/-20 °C
储存方法
Store at 4 °C for short term storage (1/2 weeks). Aliquot and store at -20 °C or - 70 °C for long term storage.
Carbonic anhydrase 2 (CA2) is one of fourteen forms of human alpha carbonic anhydrases. Carbonic anhydrase catalyzes reversible hydration of carbon dioxide. CA2 is a cytosolic enzyme with the highest activity among all known CAs. Mutations in the CA2 gene result in the CA2 deficiency syndrome, an autosomal recessive disorder that produces osteopetrosis, renal tubular acidosis and cerebral calcification. Recombinant human CA2 was expressed in E. coli and purified by using conventional chromatography. Alternative Names: Car 2 protein, Carbonic anhydrase II protein, CA II protein, Car2 protein, CAC protein, CA-II protein, CA 2 protein, Carbonic anhydrase 2 protein, Carbonic anhydrase B protein, Carbonate dehydratase II protein, CAI protein, Carbonic anhydrase C protein, Carbonic dehydratase., CA2 protein