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Merck
CN

C0773

Sigma-Aldrich

胶原酶 来源于溶组织梭菌

high purity, purified by chromatography, Type VII, ≥4 FALGPA units/mg solid, lyophilized powder, ≥700 CDU/mg solid (CDU = collagen digestion units)

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别名:
梭菌肽酶 A
CAS号:
EC 号:
MDL编号:
UNSPSC代码:
12352204
NACRES:
NA.54

质量水平

类型

Type VII

形式

lyophilized powder

比活

≥4 FALGPA units/mg solid
≥700 CDU/mg solid (CDU = collagen digestion units)

分子量

68-130 kDa

纯化方式

chromatography

组成

Protein, ≥85% biuret

溶解性

TESCA buffer (50 mM TES, 0.36 mM Calcium chloride, pH 7.4): soluble 0.05-0.1 mg/mL at 37 °C

异质活性

caseinase and clostripain ≤1 units/mg protein

储存温度

−20°C

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应用

胶原酶已用于制备研究晚期糖基化终产物(AGE)的动脉组织。该酶还与其他蛋白酶一起用于人肿瘤、小鼠肾、人脑、肺上皮和许多其他组织的解聚。它在肝脏和肾脏灌注研究、胰腺消化和非实质肝细胞的分离中也是有效的。

生化/生理作用

从组织中有效释放细胞需要胶原酶和中性蛋白酶的共同作用。胶原酶被4克原子钙(Ca2+)/摩尔的酶活化。培养滤液至少含有7种分子量为68-130kDa的不同蛋白酶。最佳pH范围为6.3-8.8。该酶识别序列 -R-Pro-8-X-Gly-Pro-R-,其中X通常是中性氨基酸。
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。

外形

含氯化钙的冻干粉

制备说明

储液制备:将0.05-0.1 mg胶原酶溶于1 mL含0.36 mM氯化钙的50 mM TES 缓冲液(TESCA)中,pH 7.4,温度 37 °C。

象形图

Health hazardExclamation mark

警示用语:

Danger

危险分类

Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

靶器官

Respiratory system

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

法规信息

常规特殊物品

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实验方案

在测定胶原酶活性时,使用N-(3-[2-呋喃基]丙烯酰基)-Leu-Gly-Pro-Ala在345nm处进行连续分光光度法测定。胶原酶水解胶原肽键。

To measure collagenase activity, N-(3-[2-Furyl]acryloyl)-Leu-Gly-Pro-Ala is used in a continuous spectrophotometric rate determination at 345 nm. Collagenase hydrolyzes collagen peptide bonds.

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