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关于此项目
化学文摘社编号:
UNSPSC Code:
12352204
eCl@ss:
32160410
EC Number:
232-973-4
NACRES:
NA.54
MDL number:
Specific activity:
30-350 units/mg protein (E1%/280)
Biological source:
Geobacillus stearothermophilus
Quality Level
biological source
Geobacillus stearothermophilus
type
Type X
form
lyophilized powder
specific activity
30-350 units/mg protein (E1%/280)
mol wt
34.6 kDa by amino acid sequence
purified by
crystallization
shipped in
wet ice
storage temp.
−20°C
General description
嗜热菌蛋白酶是一种蛋白酶,其特异性不同于可用于序列研究的其他蛋白酶。
Application
一种含有四个钙离子的热稳定性(嗜热性)细胞外金属内肽酶。辅助因子是锌和钙。水解疏水性氨基酸残基N-末端的蛋白质键。最适pH为8.0,活性的最适温度为70℃。在pH 5-9.5范围内非常稳定。嗜热菌蛋白酶具有较低的切割特异性,因此,它能产生许多适合测序的短片段。优先切割顺序: X-切割-Y-Z,其中X = 任何氨基酸;Y = Leu,Phe,Ile,Val,Met,Ala;Z是除Pro以外的任何氨基酸。切割Leu的N末端优先于切割Phe的N末端,它们优于其他氨基酸。常用于限制性蛋白水解以绘制肽图谱以及蛋白质结构和构象变化研究。
嗜热菌蛋白酶也常用于商业合成N-(苄氧基羰基)-L-天冬氨酰-L-苯丙氨酸甲酯——人造甜味剂阿斯巴甜的前体。
已有研究显示嗜热菌蛋白酶具有前序列,可在体内充当分子内分子伴侣。 它还被用于研究氯化钠对其热稳定性和催化活性的影响。
Physical form
冻干粉末,含醋酸钙和醋酸钠缓冲盐
Preparation Note
最适pH为8.0,活性的最适温度为70℃。在pH 5-9.5范围内非常稳定。嗜热菌蛋白酶具有较低的切割特异性,因此,它能产生许多适合测序的短片段。优先切割顺序: X-切割-Y-Z,其中X = 任何氨基酸;Y = Leu,Phe,Ile,Val,Met,Ala;Z是除Pro以外的任何氨基酸。切割Leu的N末端优先于切割Phe的N末端,它们优于其他氨基酸。
Analysis Note
含有许多外源性酶。
Other Notes
一个酶活性单位是指在pH 7.5、37℃条件下,每分钟水解酪蛋白并产生相当于1.0 μM (181 μg) 酪氨酸的颜色(使用Folin-Ciocalteu试剂显色)所需的酶量。
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signalword
Danger
存储类别
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
target_organs
Respiratory system
hcodes
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
wgk
WGK 1
法规信息
常规特殊物品
此项目有
K Inouye et al.
Biochimica et biophysica acta, 1388(1), 209-214 (1998-10-17)
Thermolysin, a thermophilic metalloproteinase, is markedly activated in the presence of high concentrations (1-5 M) of neutral salts. The activity increases in an exponential fashion with increasing salt concentration, and is enhanced 13-15 times with 4 M NaCl at pH
M Miyanaga et al.
Biotechnology and bioengineering, 46(6), 631-635 (1995-06-20)
N-(benzyloxycarbonyl)-L-aspartyl-L-phenylalanine methyl ester, a precursor of the synthetic sweetener, aspartame, was synthesized from N-(benzyloxycarbonyl)-L-aspartic acid and L-phenylalanine methyl ester with an immobilized thermolysin (EC 3.4.24.4) in the mixed organic solvent system of tert-amyl alcohol and ethyl acetate. A mixed solvent
The use of thermolysin in amino acid sequence determination.
R P Ambler et al.
The Biochemical journal, 108(5), 893-895 (1968-08-01)
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| P1512-1G | 04061834355441 |
| P1512-250MG | 04061834355458 |
| P1512-100MG | 04061834355434 |
| P1512-25MG | 04061834355472 |

