Quality Level
sterility
non-sterile; 0.2 μm filtered
form
lyophilized powder
specific activity
≥125 CDU/mg solid, 0.5-5.0 FALGPA units/mg solid
mol wt
68-130 kDa
storage temp.
−20°C
Application
胶原酶已用于动脉组织的制备,用于晚期糖基化终产物 (AGE) 的研究。这种酶还与其他蛋白酶一起用于人类肿瘤、小鼠肾、人脑、肺上皮和许多其他组织的解聚。也用于肝脏和肾脏灌注研究、胰腺的消化和非实质肝细胞的分离。检测浓度约为 1 mg/mL(每只大鼠肝脏总体积为 100 mL)时该酶对肝细胞的释放。
Biochem/physiol Actions
从组织中有效释放细胞需要胶原酶和中性蛋白酶的作用。每摩尔酶用 4 克原子钙 (Ca 2 + ) 激活胶原酶。培养滤液被认为含有至少 7 种不同的蛋白酶,分子量范围为 68-130 kDa。最佳 pH 值为 6.3-8.8。这种酶通常用于消化组织样本中的连接成分,以释放单个细胞。胶原酶处理可使部分细胞死亡。通常使用 0.1 至 5 mg/mL 的浓度进行消化。反应的持续时间从 15 分钟到数小时不等,可产生令人满意的细胞解离,且不会引起太多的细胞死亡。首选含钙和 BSA 的 Krebs Ringer 缓冲液,活性需要 Zn 2 + 。
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。
Preparation Note
溶液通常在 37°C 下用 TESCA 缓冲液(含 50 mM TES,0.36 mM 氯化钙,pH 7.4)制备,浓度为 1-2 mg/mL。
Other Notes
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。
Disclaimer
供应时,本品在-20°C 下可稳定保存一年。在 37°C、50°C 和-20°C 条件下储存 30 天,FALGPA 或蛋白酶活性没有损失。如果快速冷冻 (10 mg/mL) 并在-20°C 下冷冻,粗胶原酶溶液是稳定的。进一步冻融循环将破坏溶液。置于冰上 7 小时后,产品仍保持 100% 活性。
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signalword
Danger
hcodes
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
存储类别
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
法规信息
常规特殊物品
此项目有
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.
Laura Rennert et al.
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Amit P Bhole et al.
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Dupuytren's contracture (DC) is a progressive fibroproliferative disorder characterized by development of nodules and collagen cords within the palmar fascia of the hand. Collagenase clostridium histolyticum (CCH) is currently approved in adults with DC for the nonsurgical treatment of a
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| C5894-50MG | 04061833502631 |

