密封-20℃干燥保存。
Analysis Note Protein determined by biuret.
Unit Definition One unit will hydrolyze 1.0 μmole of N-acetyl-L-methionine per hr at pH 7.0 at 25 °C.
Biochem/physiol Actions The enzyme hydrolyzes a variety of N-acyl-L-amino acids and dehydropeptides containing dehydroalanyl residues. N-acyl-D-amino acids and dehydropeptides other than dehydroalanine are not hydrolyzed. The following compounds are hydrolyzed by acylase I: chloroacetyl-L-amino acids, L-leucinamide, chloroacetyldehydroalanine, glycyl-L-amino acids, and glycyldehydroalanine. Aminoacylase is widely used as a reagent to resolve amino acid racemates. The Km for acyl amino acids have been reported in the literature: Ac-L-Met (0.99 mM), Ac-L-Glu (10.2 mM), and Ac-L-Phe (5.5 mM).
Aminoacylase from pig kidney is activated by Zn2+ and Co2+ and inhibited by SH blocking reagents, disulfide reducing reagents, N-tosyl-L-alanine,
DL-norleucine, and N-tosyl-L-lysine chloromethylketone.
1. 性状:浅红色或浅黄色冻干粉。
2. 密度(g/mL,25/4℃):未确定
3. 相对蒸汽密度(g/mL,空气=1):未确定
4. 熔点(ºC):未确定
5. 沸点(ºC,常压):未确定
6. 沸点(ºC, 5.2kPa):未确定
7. 折射率:未确定
8. 闪点(ºC):未确定
9. 比旋光度(º ):未确定
10. 自燃点或引燃温度(ºC):未确定
11. 蒸气压(kPa,25ºC):未确定
12. 饱和蒸气压(kPa,60ºC):未确定
13. 燃烧热(KJ/mol):未确定
14. 临界温度(ºC):未确定
15. 临界压力(KPa):未确定
16. 油水(辛醇/水)分配系数的对数值:未确定
17. 爆炸上限(%,V/V):未确定
18. 爆炸下限(%,V/V):未确定
19. 溶解性:溶于水,最适pH值7.0-7.5(猪肾、淀粉酶)或7-8(米曲酶)。
密封-20℃干燥保存。
Analysis Note Protein determined by biuret.
Unit Definition One unit will hydrolyze 1.0 μmole of N-acetyl-L-methionine per hr at pH 7.0 at 25 °C.
Biochem/physiol Actions The enzyme hydrolyzes a variety of N-acyl-L-amino acids and dehydropeptides containing dehydroalanyl residues. N-acyl-D-amino acids and dehydropeptides other than dehydroalanine are not hydrolyzed. The following compounds are hydrolyzed by acylase I: chloroacetyl-L-amino acids, L-leucinamide, chloroacetyldehydroalanine, glycyl-L-amino acids, and glycyldehydroalanine. Aminoacylase is widely used as a reagent to resolve amino acid racemates. The Km for acyl amino acids have been reported in the literature: Ac-L-Met (0.99 mM), Ac-L-Glu (10.2 mM), and Ac-L-Phe (5.5 mM).
Aminoacylase from pig kidney is activated by Zn2+ and Co2+ and inhibited by SH blocking reagents, disulfide reducing reagents, N-tosyl-L-alanine,
DL-norleucine, and N-tosyl-L-lysine chloromethylketone.
1. 性状:浅红色或浅黄色冻干粉。
2. 密度(g/mL,25/4℃):未确定
3. 相对蒸汽密度(g/mL,空气=1):未确定
4. 熔点(ºC):未确定
5. 沸点(ºC,常压):未确定
6. 沸点(ºC, 5.2kPa):未确定
7. 折射率:未确定
8. 闪点(ºC):未确定
9. 比旋光度(º ):未确定
10. 自燃点或引燃温度(ºC):未确定
11. 蒸气压(kPa,25ºC):未确定
12. 饱和蒸气压(kPa,60ºC):未确定
13. 燃烧热(KJ/mol):未确定
14. 临界温度(ºC):未确定
15. 临界压力(KPa):未确定
16. 油水(辛醇/水)分配系数的对数值:未确定
17. 爆炸上限(%,V/V):未确定
18. 爆炸下限(%,V/V):未确定
19. 溶解性:溶于水,最适pH值7.0-7.5(猪肾、淀粉酶)或7-8(米曲酶)。
1.疏水参数计算参考值(XlogP):7.6
2.氢键供体数量:3
3.氢键受体数量:3
4.可旋转化学键数量:11
5.互变异构体数量:12
6.拓扑分子极性表面积69.8
7.重原子数量:37
8.表面电荷:0
9.复杂度:726
10.同位素原子数量:0
11.确定原子立构中心数量:0
12.不确定原子立构中心数量:0
13.确定化学键立构中心数量:0
14.不确定化学键立构中心数量:0
15.共价键单元数量:1