L2375
L-乳酸脱氢酶 来源于兔肌肉
Type I, ammonium sulfate suspension, >40 units/mg protein
别名:
L-LDH, LAD, LD, （S）-乳酸：NAD+ 氧化还原酶
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关于此项目
化学文摘社编号:
UNSPSC Code:
12352204
EC Number:
232-617-8
MDL number:
type
Type I
form
ammonium sulfate suspension
specific activity
>40 units/mg protein
storage temp.
2-8°C
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General description
乳酸脱氢酶（LDH）的总分子量为140kDa，由4个亚基组成，称为M亚基（肌肉）和H亚基（心脏）。这些亚基可以以5种组合（M4、M3H1、M2H2、MH3和H4）中的任何一种进行混合。 骨骼肌含有LDH，其主要是M4，含有少量M3H和微量的H2H2。 H和M亚基的分子量非常相似，但氨基酸组成十分不同。兔肌肉LDH在pH5.0的乙酸盐-氯化物中可解离为二聚体物质（MW = ~70kDa），该解离是可逆的。Biochemistry, 13, 3527-3531 (1974). 氧化乙醛酸和乳酸。
等电点：8.4-8.6
最适pH值：7.5.
等电点：8.4-8.6
最适pH值：7.5.
Biochem/physiol Actions
其还可催化其他L-2-羟基单羧酸的氧化。
Physical form
Suspension in 3.2 M (NH4)2SO4 solution, pH 6.0
Analysis Note
Protein determined by biuret.
Other Notes
One unit will reduce 1.0 μmole of pyruvate to L-lactate per min at pH 7.5 at 37 °C.
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
存储类别
11 - Combustible Solids
wgk
WGK 1
ppe
Eyeshields, Gloves, type N95 (US)
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