半岛bd体育手机客户端 说明
应用
Collagenase from Clostridium histolyticum, or Clostridiopeptidase A, has been used in a study to assess the synthesis andin vitroevaluation of macromolecular antitumour derivatives based on phenylenediamine mustard. Clostridiopeptidase A has also been used in a study to investigate the enzymatic debridement of burn wounds with collagenase.
生化/生理作用
Effective release of cells from tissue requires the action of collagenase enzymes and the neutral protease. Collagenase is activated by four gram atom calcium (Ca2+) per mole enzyme. The culture filtrate is thought to contain at least 7 different proteases ranging in molecular weight from 68-130 kDa. The pH optimum is 6.3-8.8. The enzyme is typically used to digest the connective components in tissue samples to liberate individual cells. Ethylene glycol-bis(β-aminoethyl ether)-N,N,N′,N′-tetraacetic acid (EGTA)4; β-mercaptoethanol; glutathione, reduced; thioglycolic acid, sodium; and 2,2′-dipyridyl; 8-hydroxyquinoline are known to inhibit the enzyme activity.
每摩尔胶原蛋白酶被4g原子钙活化。 它被乙二醇-双(β-氨基乙基醚)-N，NN′,N′-四乙酸，β-巯基乙醇、谷胱甘肽、巯基乙酸和8-羟基喹啉抑制。
单位定义
一个胶原蛋白消化单元(CDU)从牛跟腱胶原蛋白中释放的肽链量和1.0 μ亮氨酸，5小时，pH7.4,37℃，在钙离子存在下的茚三酮颜色相同。一个 FALGPA水解单元每分钟，25℃，水解1.0 μmole 呋喃基丙烯酰-Leu-Gly-Pro-Ala。一个中性蛋白酶单元水解酪蛋白，产生颜色和1.0 μmole 酪氨酸每5小时，pH7.5,37℃下产生的相同。一个梭菌蛋白酶单元在DTT存在下，pH7.6,25℃，每分钟水解1.0 μmole BAEE。
基本信息
| 酶学委员会(EC)编号 | 3.4.24.3 ( BRENDA | IUBMB ) |
| EC 号 | 232-582-9 |
| MDL编号 | MFCD00130830 |
| NACRES | NA.54 |
半岛bd体育手机客户端 性质
| 质量水平 | 200 |
| 形式 | powder |
| caseinase activity | ≥40 units/mg solid |
| specific activity | ≤1.0 FALGPA units/mg solid |
| 分子量 | 68-130 kDa |
| 储存温度 | ?20℃ |
安全信息
| 象形图 |  |
| 警示用语： | Danger |
| 危险声明 | H334 |
| 预防措施声明 | P261 - P284 - P501 |
| 危险分类 | Resp. Sens. 1 |
| 储存分类代码 | 11 - Combustible Solids |
| WGK | WGK 1 |
| 闪点(F) | Not applicable |
| 闪点(C) | Not applicable |
| 个人防护装备 | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
Sigma-Aldrich
m.cnreagent.com
