biological source
rabbit muscle
Quality Level
form
lyophilized powder
specific activity
≥20 units/mg protein
mol wt
97,200 Da by calculation
purified by
2× crystallization
storage condition
(Keep container tightly closed in a dry and well-ventilated place)
technique(s)
mass spectrometry (MS): suitable
impurities
~0.01 μmol/mg protein 5′-AMP (This low level will not interfere with phosphorylase and phosphorylase kinase assays.)
UniProt accession no.
foreign activity
phosphoglucomutase ≤1.0%, phosphorylase a ≤10%, phosphorylase kinase ≤0.5%, phosphorylase phosphatase, debrancher enzyme, AMPase and ATPase ≤0.1%
storage temp.
−20°C
General description
研究领域:细胞信号传导
糖原磷酸化酶(PG)是一种特殊的复杂变构酶,具有进化上保守的基因序列。GP 包含一个由三种同工酶组成的家族,如人类的肌肉 GP(mGP)、肝脏 GP(lGP)和大脑 GP(bGP)。
糖原磷酸化酶(PG)是一种特殊的复杂变构酶,具有进化上保守的基因序列。GP 包含一个由三种同工酶组成的家族,如人类的肌肉 GP(mGP)、肝脏 GP(lGP)和大脑 GP(bGP)。
Application
兔肌肉磷酸化酶 b 已用于:
- 琼脂糖凝胶 C1-6B 柱校准,同时研究甲胺脱氢酶亚基的分子量
- 离子迁移率质谱研究,用增压试剂在电荷减少缓冲液中产生的磷酸化酶 B 离子
- 通过磷酸化酶激酶和 [32P]ATP 制备 p32 标记的磷酸化酶 A
- 磷酸化酶磷酸酶测定
- 酶分析,作为阳性对照,确保采用了活性测定反应系统
Biochem/physiol Actions
磷酸化酶 b 是一种非活性形式,存在于静息肌肉中。 当 Mg2+:ATP 比率超过 1 时,磷酸化酶 b 激酶活性显著增加。 人们认为肌肉收缩过程中 ATP 的分解会触发体内磷酸化酶 b 转化为 a。磷酸化酶 b 被一磷酸肌苷激活。糖原磷酸化酶(PG)在糖原分解的第一步中起着至关重要的作用。在糖原分解的初始阶段,糖原磷酸化酶(GP)破坏 α-1,4--糖苷键,释放葡萄糖-1-磷酸(G1P)分子。研究发现,在不添加引物的情况下,兔肌肉磷酸化酶 B 与适当浓度的葡萄糖-1-磷酸孵育能够形成与蛋白质结合的 α-1,4葡糖基链。
Packaging
基于蛋白质含量的包装尺寸。
Physical form
含乳糖的冻干粉,5′-AMP 和 Mg (OAc) 2 (10μ摩尔/100 mg 蛋白质)
Other Notes
在含有磷酸葡萄糖变位酶、NADP 和葡萄糖-6-磷酸脱氢酶的体系中,存在 5'-AMP 的情况下,在 pH 6.8, 30°C 下,1 个单位将由糖原和正磷酸盐形成 1.0 μmol 的 α-D-葡萄糖 1-磷酸。(1 μmol 单位相当于约45 个 Cori 单位。)
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存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
法规信息
低风险生物材料
此项目有
Marta Migocka-Patrzałek et al.
Cells, 10(4) (2021-05-01)
Glycogen phosphorylase (PG) is a key enzyme taking part in the first step of glycogenolysis. Muscle glycogen phosphorylase (PYGM) differs from other PG isoforms in expression pattern and biochemical properties. The main role of PYGM is providing sufficient energy for
F M Vellieux et al.
European journal of biochemistry, 154(2), 383-386 (1986-01-15)
The enzyme methylamine dehydrogenase or primary-amine:(acceptor) oxidoreductase (deaminating) (EC 1.4.99.3) was purified from the bacterium Thiobacillus versutus to homogeneity, as judged by polyacrylamide gel electrophoresis. The native enzyme has a Mr of 123 500 and contains four subunits arranged in
Studies on the allosteric activation of glycogen phosphorylase b by Nucleotides. I. Activation of phosphorylase b by inosine monophosphate.
W J Black et al.
The Journal of biological chemistry, 243(22), 5892-5898 (1968-11-25)
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| P6635-5MG | 04061834393764 |
| P6635-100MG | 04061834393740 |
| P6635-10MG | 04061832925134 |
| P6635-25MG | 04061834393757 |