推荐产品
生物源
bovine liver
品質等級
形狀
lyophilized powder
比活性
2,000-5,000 units/mg protein
分子量
tetramer ~250 kDa
等電點
5.4
UniProt登錄號
運輸包裝
wet ice
儲存溫度
−20°C
InChI
1S/C9H10O3/c1-2-12-9(11)7-3-5-8(10)6-4-7/h3-6,10H,2H2,1H3
InChI 密鑰
NUVBSKCKDOMJSU-UHFFFAOYSA-N
基因資訊
cow ... CAT(280743)
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一般說明
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.
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.
應用
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
过氧化氢酶溶液不可冷冻。 冷冻溶液将导致酶活性损失50-70％。
單位定義
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。
準備報告
该产品是一种冻干粉，活性是2,000-5,000单位/mg。
该酶溶于50 mM磷酸钾缓冲液中，浓度为1 mg/mL，pH 7.0。
该酶溶于50 mM磷酸钾缓冲液中，浓度为1 mg/mL，pH 7.0。
儲存和穩定性
Solutions of catalase should not be frozen. Freezing catalase solutions will lead to a loss of activity by 50-70%. The recommended storage temperature of the product in its powdered form is at -20 °C.
抑制劑
产品编号
说明
价格
訊號詞
Danger
危險聲明
危險分類
Resp. Sens. 1
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 1
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves, type N95 (US)
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商品
Oxidative stress is mediated, in part, by reactive oxygen species produced by multiple cellular processes and controlled by cellular antioxidant mechanisms such as enzymatic scavengers or antioxidant modulators. Free radicals, such as reactive oxygen species, cause cellular damage via cellular.
实验方案
This procedure may be used for all Catalase products.
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