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| 编号: | 429885 |
| 中文名称: | Ac-Asp-pNA |
| CAS号: | 41149-01-3 |
| 单字母: | Ac-D-pNA |
| 三字母: | Ac N端乙酰化封端,一种常见的修饰方式,常用于模拟蛋白质中的肽片段。 -AspL-天冬氨酸:aspartic acid。系统命名为(2S)-氨基-丁二酸。是编码氨基酸,又是神经递质。符号:D,Asp。D-天冬氨酸存在于多种细菌的细胞壁和短杆菌肽A中。 -pNA对硝基苯胺 |
| 氨基酸个数: | 1 |
| 分子式: | C12H13O6N3 |
| 平均分子量: | 295.25 |
| 精确分子量: | 295.08 |
| 等电点(PI): | - |
| pH=7.0时的净电荷数: | -1 |
| 平均亲水性: | 3 |
| 疏水性值: | -3.5 |
| 消光系数: | - |
| 标签: | 天冬氨酸类 pNA修饰氨基酸 |
Ac-Asp-pNA is a carboxy, serine protease that is used as an antigen in bactericidal and antibacterial assays. It also has been shown to be effective against neutral ph organisms such as E. coli and Pseudomonas aeruginosa. Ac-Asp-pNA elutes from the column when it is inactivated under neutral ph conditions, which can be seen by the presence of reactive peaks. The protonation of Ac-Asp-pNA at high pH results in a loss of reactivity, which can be detected by the diminazene peak at low pH. This protein is activated by potassium ions and cellular proteins, which can be seen by the presence of peaks at m/z 816 and 806 respectively.





