产品说明
一般描述
Native elastase from porcine pancreas. Catalyzes the hydrolysis of proteins and peptides (especially at bonds adjacent to neutral amino acid residues), including albumin, casein, denatured collagen, elastin, fibrin, and hemoglobin, and of a number of synthetic substrates containing aspartic acid, glutamic acid, phenylalanine, or tyrosine. Preferentially cleaves peptide bonds at the carbonyl end of amino acid residues with small hydrophobic side chains, such as glycine, valine, leucine, isoleucine, and particularly alanine. Inhibited by DFP, elastinal, and α2-macroglobulin. Has an optimal pH of 7.8-8.5; pI = 9.5. Note: Elastase tends to adhere to glass. Hence, use of siliconized glassware is recommended.
Native elastase from porcine pancreas. A serine protase that catalyzes the hydrolysis of proteins and peptides (especially at bonds adjacent to neutral amino acid residues), including albumin, casein, denatured collagen, elastin, fibrin, and hemoglobin and of a number of synthetic substrates containing aspartic acid, phenylalanine, or tyrosine. Inhibited by DFP, elastinal, and α2-macroglobulin.
包装
1000, 250 u in Plastic ampoule
警告
Toxicity: Standard Handling (A)
单位定义
One unit is defined as the amount of enzyme that will hydrolyze 1.0 mol of Suc-Ala-Ala-Pro-Abu-pNA (Cat no.324699) per min at 25℃, pH 8.0.
外形
Lyophilized from 50 mM Trehalose, 1 mM Acetic Acid.
重悬
Following reconstitution, elastase may be stored at 4°C at pH 6.0 for long term use. If incubated at room temperature at or near its optimum pH, elastase rapidly autolyzes to a mixture of peptides. Stock solutions are stable for up to 2 months at 4°C, pH 6.0.
其他说明
Largman, C. et al. 1976. Biochemestry15, 2491.
Mandl, I. 1962. Methods in Enzymol.5, 665.
法律信息
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
基本信息
| 酶学委员会(EC)编号 | 3.4.21.36 ( BRENDA | IUBMB ) |
| MDL编号 | MFCD00130998 |
产品性质
| 质量水平 | 100 |
| 形式 | lyophilized |
| specific activity | ≥25 units/mg protein |
| manufacturer/tradename | Calbiochem® |
| 储存条件 | OK to freeze desiccated |
| 溶解性 | distilled water: 10 mg/mL |
| 异质活性 | Chymotrypsin ≤0.2% |
| 运输 | ambient |
| 储存温度 | −20℃ |
安全信息
| 象形图 |   |
| 警示用语： | Danger |
| 危险声明 | H315 - H319 - H334 - H335 |
| 预防措施声明 | P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338 |
| 危险分类 | Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3 |
| 靶器官 | Respiratory system |
| 储存分类代码 | 11 - Combustible Solids |
| WGK | WGK 3 |
Sigma-Aldrich
m.cnreagent.com
