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等級
for molecular biology
品質等級
化驗
≥98% (enzymatic)
形狀
powder
儲存溫度
−20°C
SMILES 字串
OC[C@H]1O[C@@H](Oc2ccccc2[N+]([O-])=O)[C@H](O)[C@@H](O)[C@H]1O
InChI
1S/C12H15NO8/c14-5-8-9(15)10(16)11(17)12(21-8)20-7-4-2-1-3-6(7)13(18)19/h1-4,8-12,14-17H,5H2/t8-,9+,10+,11-,12-/m1/s1
InChI 密鑰
KUWPCJHYPSUOFW-YBXAARCKSA-N
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一般說明
ONPG（2-硝基苯-β-D-半乳糖苷）是β-半乳糖苷酶的比色底物。
應用
2-硝基苯-β-D-半乳糖苷是一种酶底物，可用于检测lacZ活性，从而检测是否存在β-半乳糖苷酶。
生化／生理作用
β-半乳糖苷酶可将乳糖分解为半乳糖和葡萄糖。β-半乳糖苷酶不是乳糖特异性的，并且可以水解简单的半乳糖苷。2-硝基苯-β-D-半乳糖苷水解，导致半乳糖和黄色显色化合物的释放。该测试底物不依赖于诱导或组成型通透酶进入细胞，因此反应迅速并且在24小时内发生。
原則
β-半乳糖苷酶可将乳糖分解为半乳糖和葡萄糖。β-半乳糖苷酶不是乳糖特异性的，并且可以水解简单的半乳糖苷。2-硝基苯-β-D-半乳糖苷水解，导致半乳糖和黄色显色化合物的释放。该测试底物不依赖于诱导或组成型通透酶进入细胞，因此反应迅速并且在24小时内发生。
重構
可使用分子生物学级水制备浓度为3 mg/ml的储备溶液。 也可使用100 mM磷酸钠缓冲液（pH 7.3）制备约20.5 mg/ml的储备溶液。可能需要稍微加热，才能完全溶解本品。
基底
β-半乳糖苷酶的显色底物。
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves, type N95 (US)
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商品
Transformation is the process by which exogenous DNA is introduced into a cell, resulting in a heritable change or genetic modification. This was first reported in Streptococcus pneumoniae by Griffith in 1928. Transforming principle of DNA was demonstrated by Avery et al. in 1944.
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