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Merck
CN

C30

Sigma-Aldrich

过氧化氢酶 来源于牛肝脏

aqueous suspension, 10,000-40,000 units/mg protein

别名:

牛肝过氧化氢酶, H2O2:H2O2 氧化还原酶

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About This Item

CAS号:
MDL编号:
UNSPSC代码:
12352204
eCl@ss:
32160410
NACRES:
NA.54

生物来源

bovine liver

质量水平

表单

aqueous suspension

比活

10,000-40,000 units/mg protein

分子量

tetramer ~250 kDa

浓度

20-50 mg/mL

技术

GC/MS: suitable

等电点

5.4

UniProt登记号

运输

wet ice

储存温度

2-8°C

SMILES字符串

O(CC)C(=O)c1ccc(cc1)O

InChI

1S/C9H10O3/c1-2-12-9(11)7-3-5-8(10)6-4-7/h3-6,10H,2H2,1H3

InChI key

NUVBSKCKDOMJSU-UHFFFAOYSA-N

基因信息

cow ... CAT(280743)

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一般描述

来自牛肝的过氧化氢酶包含506种残基。它是一种四聚体,每个单体对应的分子量为61 kDa。每个单体的活性位点包括烟酰胺腺嘌呤二核苷酸磷酸(NADPH)和铁结合区。

研究领域:细胞信号传导
Research Area: Cell Signaling

Catalase from bovine liver is a tetramer consisting of 4 equal subunits each with a 60 kDa molecular weight. Each of these subunits contains iron bound to a protoheme IX group. The enzyme will also strongly bind to NADP, where NADP and the heme group are within 13.7 angstroms.

应用

牛肝中的过氧化氢酶用于以下应用:
  • 介电泳场流分级法(DEP-FFF):这是一种色谱方法,其中细胞洗脱时间分别在沉降、DEP和流体动力升力(FSED、FDEP和FHDL)的控制下反映细胞在流体动力流剖面中的位置。DEP-FFF缓冲液由过氧化氢酶和其他成分组成。
  • 气相色谱-质谱分析。
  • 去离子。
  • 气相色谱-火焰离子化检测器分析
  • 血管功能分析。
牛肝中的过氧化氢酶用于测量癌组织匀浆中的过氧化氢含量。它还被用于测试有机磷杀虫剂毒死蜱-乙基(CE) [0,0-二乙基 0 (3,5,6-三氯-2-吡啶基) 硫代磷酸]对其酶活性的影响。
过氧化氢酶作为天然抗氧化剂,可用于研究活性氧物质对基因表达和凋亡的作用。它还被用于保护蛋白质、脂质和核酸免受氧化损伤。 工业上,过氧化氢酶已被用于去除添加至牛奶和奶酪中以及纺织品漂白使用的过氧化氢,并用于检查其对DNA修复大肠杆菌突变体活力的阳性效应。

生化/生理作用

本品不需要任何活化剂,但其活性可被3-氨基-1-H-1,2,4三唑、氰化物、叠氮化物、羟胺、溴化氰、2-巯基乙醇、二硫苏糖醇、邻联茴香胺和硝酸盐抑制。
Catalase, an antioxidant enzyme found in all aerobic organisms, catalyzes the degradation of hydrogen peroxide, a byproduct of metabolic processes, into less harmful water and oxygen. It can also react with alkylhydrogen peroxides, such as methylperoxide and ethylperoxide and the second H2O2 molecule can be replaced by methanol, ethanol, propanol, formate and nitrate as a hydrogen donor. Catalase enzyme uses either iron (Fe) or manganese (Mn) as cofactor, and are classified as Fe-CAT or Mn-CAT.

注意

催化剂的溶液不应冻结。冷冻溶液会导致50-70%的活性损失。

单位定义

一单位酶可在pH7.0、25℃下每分钟分解1.0 μM的H2O2,通过测量A240的下降速率可知H2O2浓度从10.3降至9.2 mM。

制备说明

该产品为含0.1%百里酚的结晶悬浮液,活性为10,000-40,000单位/毫克。

储存及稳定性

Tightly closed. Dry. Keep locked up or in an area accessible only to qualified or authorized
persons

象形图

Health hazard

警示用语:

Danger

危险声明

预防措施声明

危险分类

Resp. Sens. 1

储存分类代码

13 - Non Combustible Solids

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US), type N95 (US)

法规信息

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分析证书(COA)

Lot/Batch Number

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访问文档库

The effect of organophosphate insecticide chlorpyrifos-ethyl on lipid peroxidation and antioxidant enzymes (in vitro)
Gultekin F, et al.
Archives of Toxicology, 74(9), 533-538 (2000)
The complete amino acid sequence of bovine liver catalase and the partial sequence of bovine erythrocyte catalase
Schroeder WA, et al.
Archives of Biochemistry and Biophysics, 214(1), 397-421 (1982)
Haïfa Debbabi et al.
Molecules (Basel, Switzerland), 25(9) (2020-05-07)
The present investigation was focused on the study of the chemical composition variability and biological activities of the essential oils from Clinopodium nepeta subsp. nepeta and subsp. glandulosum. Essential oils extraction was performed using hydrodistillation and the separation of the
Manganese superoxide dismutase (SOD2/MnSOD)/catalase and SOD2/GPx1 ratios as biomarkers for tumor progression and metastasis in prostate, colon, and lung cancer
Miar A, et al.
Free Radical Biology & Medicine, 85, 45-55 (2015)
Sangjo Shim et al.
Biomicrofluidics, 7(1), 11808-11808 (2014-01-10)
The number of circulating tumor cells (CTCs) found in blood is known to be a prognostic marker for recurrence of primary tumors, however, most current methods for isolating CTCs rely on cell surface markers that are not universally expressed by

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