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生物源
bovine pancreas
品質等級
形狀
dry powder
比活性
50 U/mg (+25°C, RNA as substrate)
分子量
Mr = 13,700
包裝
pkg of 100 mg (10109169001)
pkg of 25 mg (10109142001)
製造商／商標名
Roche
參數
65 °C optimum reaction temp.
技術
flow cytometry: suitable
最適pH
7.0-7.5
儲存溫度
2-8°C
一般說明
牛胰腺核糖核酸酶A是核糖核酸酶A蛋白质超家族的成员之一。它是最具有特征的蛋白质，是肾脏形状的基本蛋白质。该蛋白质由124个氨基酸组成。核糖核酸酶A的天然形式是同二聚体。
應用
- 用于分析目的的
- DNA提取（如果是用于分析，核糖核酸酶A需要煮沸破坏）
- 流式细胞术细胞周期分析和碘化丙啶(PI)染色
生化／生理作用
核糖核酸酶A催化RNA转磷酸化和降解。它是第一种被确认具有使DNA变性功能的蛋白质。该酶能够和单链（ss）RNA聚核苷酸链上多个结合位点结合，然后降解它。它和身上DNA以相似的方式发生作用，导致DNA解旋。通过串联获得的核糖核酸酶A二聚体对癌症细胞有毒性。
單位定義
一单位酶活性导致A0比A1吸收率在实验条件下降低。A0 比A1对应总转化，A1是终吸收率。
重構
核糖核酸酶A在10mM Tris-HCl,pH7.5,15mM NaCl中溶解，浓度为1到10mg/ml。加热到100℃，15分钟使得里面的脱氧核糖核酸酶失活，然后逐渐降温到室温，分装。Roche建议随后储存在-15到-25℃。
其他說明
仅用于生命科学研究。不可用于诊断。
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 1
閃點（°F）
Not applicable
閃點（°C）
Not applicable
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