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重要文件

L2005

Sigma-Aldrich

乳过氧化物酶 来源于牛奶

lyophilized powder (essentially salt-free), ≥200 units/mg protein

同義詞:

供体:过氧化氢氧化还原酶, 过氧化物酶

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About This Item

CAS號碼:
酶委員會編號:
EC號碼:
MDL號碼:
分類程式碼代碼:
12352204
NACRES:
NA.54

生物源

bovine milk

品質等級

形狀

lyophilized powder (essentially salt-free)

比活性

≥200 units/mg protein

吸光率

A412/280 nm 0.7-0.9

UniProt登錄號

儲存溫度

−20°C

InChI

1S/H2O3/c1-3-2/h1-2H

InChI 密鑰

JSPLKZUTYZBBKA-UHFFFAOYSA-N

基因資訊

cow ... LPO(280844)

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一般說明

乳过氧化物酶是存在于牛奶中的主要酶,属于过氧化物酶家族。它同时存在于植物和动物中。其酶结构包含由612个氨基酸残基组成的多肽链。

應用

牛奶中的过氧化物酶用作牛奶过氧化物酶标准品,研究在原料乳中存在乳过氧化物酶时H2O2对抑制金黄色葡萄球菌生长的作用。它也用于乳过氧化物酶介导的碘化,以制备放射性标记肽。

生化/生理作用

乳过氧化物酶通过灭活多种微生物来促进牛奶的抗菌系统。这种乳过氧化物酶介导的抗菌系统也见于人类分泌物,如泪液、唾液和乳汁。乳过氧化物酶通过释放H2O2催化分子氧化。产物具有抗菌活性。
乳过氧化物酶催化过氧化氢与碘化物的氧化反应生成碘。该活性提供了一种温和的特异性氯胺 T 替代物,用于蛋白质和 DNA 的放射性碘化反应。

單位定義

在25℃、pH 5.5条件下,一个单位可氧化1.0 μmM 2,2′-联氮基-双(3-乙基苯并噻唑啉-6-磺酸)。

分析報告

Lowry法测蛋白。

象形圖

Health hazard

訊號詞

Danger

危險聲明

防範說明

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

個人防護裝備

Eyeshields, Gloves, type N95 (US)


分析證明 (COA)

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