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Merck
CN

C1345

Sigma-Aldrich

过氧化氢酶 来源于牛肝脏

powder, suitable for cell culture, 2,000-5,000 units/mg protein

别名:

H2O2:H2O2 氧化还原酶

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About This Item

CAS号:
EC 号:
MDL编号:
UNSPSC代码:
12352204
eCl@ss:
32160410
NACRES:
NA.75

生物来源

bovine liver

质量水平

产品线

BioReagent

形式

powder

比活

2,000-5,000 units/mg protein

分子量

tetramer ~250 kDa

技术

cell culture | mammalian: suitable

等电点

5.4

UniProt登记号

运输

wet ice

储存温度

−20°C

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

CAT(过氧化氢酶)是一种内源性抗氧化酶,因此可保护细胞免受ROS(活性氧)的损害。在人体内,该基因定位至染色体11p13,由12个内含子和13个外显子所组成。
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

来自牛肝的过氧化氢酶可用于以下应用:
  • 凝胶过滤
  • Ultrogel和甘油梯度离心上的分析过滤
  • 尺寸排阻色谱(HPLC)-雌激素受体的HPLC分析
  • 酶检测
  • 酒精氧化酶活性
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

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.
该产品不需要任何的激活剂,但它会受到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、二硫苏糖醇和硝酸盐的抑制。

注意

过氧化氢酶溶液不应当被冷冻。 冷冻的溶液将会导致50-70%的活性丢失。

单位定义

一个单位的酶将会在25 °C pH7.0是每分钟分解1.0 μ摩尔的H2O2,而H2O2的浓度经A240下降速率测定可知会从10.3下降至9.2 mM。

制备说明

该产品在活性为2,000-5,000 单位/mg是非常适合于细胞培养。 该酶可以1 mg/mL, pH7.0溶于50mM磷酸钾缓冲液中。

抑制剂

产品编号
说明
价格

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

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

法规信息

动植物源性产品

分析证书(COA)

输入产品批号来搜索 分析证书(COA) 。批号可以在产品标签上"批“ (Lot或Batch)字后找到。

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Ding Peng et al.
Clinical epigenetics, 10(1), 94-94 (2018-07-15)
5-Hydroxymethylcytosine (5hmC) is converted from 5-methylcytosine (5mC) by a group of enzymes termed ten-eleven translocation (TET) family dioxygenases. The loss of 5hmC has been identified as a hallmark of most types of cancer and is related to tumorigenesis and progression.
Y Xu et al.
Journal of bacteriology, 179(4), 1112-1116 (1997-02-01)
Nitrilotriacetate (NTA) is an important chelating agent in detergents and has also been used extensively in processing radionuclides. In Chelatobacter heintzii ATCC 29600, biodegradation of NTA is initiated by NTA monooxygenase that oxidizes NTA to iminodiacetate and glyoxylate. The NTA
Claire M Doskey et al.
Redox biology, 10, 274-284 (2016-11-12)
Ascorbate (AscH-) functions as a versatile reducing agent. At pharmacological doses (P-AscH-; [plasma AscH-] ≥≈20mM), achievable through intravenous delivery, oxidation of P-AscH- can produce a high flux of H2O2 in tumors. Catalase is the major enzyme for detoxifying high concentrations
G Redeuilh et al.
The Journal of biological chemistry, 262(15), 6969-6975 (1987-05-25)
The structure of the calf uterus nontransformed molybdate-stabilized estradiol receptor (ER) has been investigated using affinity labeling with tamoxifen aziridine and several monoclonal antibodies directed either against the steroid binding protein (Mr approximately 65,000) or against the heat shock protein
Yanqiong Liu et al.
Medicine, 94(13), e702-e702 (2015-04-04)
Reactive oxygen species (ROS) play critical roles in hepatocarcinogenesis. The catalase (CAT) enzyme is involved in the repair of ROS. Therefore, we investigate the association between CAT gene polymorphisms and the risk of hepatocellular carcinoma (HCC). A total of 715

实验方案

This procedure may be used for all Catalase products.

过氧化氢酶催化过氧化氢生成水和氧气。该实验方案使用分光光度法测定过氧化氢酶活性。

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