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一般說明
DNase I是一种可降解DNA的双链特异性内切核酸酶。牛胰腺脱氧核糖核酸酶I（DNase I）是DNA小沟相互作用的核酸酶，特异性相对较低。该蛋白质由两个中心β折叠构成，而每个折叠由六个β-链所组成。该结构被大量的环以及α-螺旋区域包围。该酶与核酸外切酶III具有结构相似性。DNase I是研究得最透彻的哺乳动物来源的内切酶之一。
應用
DNase I 与胶原酶一起已被用于组织解离。
生化／生理作用
在组织解离过程中，部分细胞被裂解并导致DNA的释放。单分子DNA可能会导致细胞结团。向解离缓冲液中加入DNase I会导致该细胞外DNA的降解，因而避免了因意外结团造成的细胞损失。
特點和優勢
- 冻干的
- 且冻干前经 0.2 μm 孔径膜过滤
- 糖蛋白和双链特异性内切酶
單位定義
一个单位表示在测定条件下导致吸光度以0.001每分钟的速率而增加的酶活力。
準備報告
激活剂：二价金属离子 (Ca2+, Mg2+)
工作浓度：0.01 至 1 mg/ml
注意：必须针对每种细胞类型单独确定工作浓度。为实现最佳活性，酶须添加 5 mM Mg2+。
工作浓度：0.01 至 1 mg/ml
注意：必须针对每种细胞类型单独确定工作浓度。为实现最佳活性，酶须添加 5 mM Mg2+。
重構
用无菌的双蒸水对冻干酶进行重悬（10 mg/ml）；用PBS（磷酸盐缓冲液）、HBSS（Hank′s 平衡盐溶液）或培养基进行进一步的稀释。
其他說明
仅用于生命科学研究。不用于诊断操作。
訊號詞
Danger
危險聲明
危險分類
Resp. Sens. 1 - Skin Sens. 1
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 1
閃點（°F）
does not flash
閃點（°C）
does not flash
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