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Merck

L9518

Sigma-Aldrich

脂肪酶 来源于假单胞菌

Type XIII, lyophilized powder, ≥15 units/mg solid

别名:

三酰基甘油脂肪酶, 三酰基甘油酰基水解酶

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About This Item

CAS号:
EC號碼:
MDL號碼:
分類程式碼代碼:
12352204
NACRES:
NA.54

種類

Type XIII

形狀

lyophilized powder

比活性

≥15 units/mg solid

分子量

~134 kDa

成份

Protein, 40-65% biuret

儲存溫度

2-8°C

一般說明

脂肪酶是将三酰基甘油酯分解成游离脂肪酸和甘油的水解酶。

應用

当与 L-α-甘油磷酸氧化酶(G3O-301、G3O-311、G3O-321)和甘油激酶(GYK-301、GYK-311)偶联时,该酶可用于酶促测定血清中的甘油三酯。通常,在 37oC 下,反应可在 5 分钟内完成,每次试验使用 2.5 oC~3.0 单位的酶(3.0ml),pH 约为 7.0。来源于假单胞菌属的脂肪酶已被用于评估微波辐射辅助棕榈油酶促合成生物柴油的研究。

生化/生理作用

可水解甘油三酯、甘油二酯、甘油单酯(速率依次递减)。
来源于假单胞菌的脂肪酶显示出抑制人外周血中单核细胞的趋化性。

物理性質

等电点:5.95-/+0.05
抑制剂:Hg++、 Ag+、离子型去垢剂
最佳 pH 值:7.0-9.0
最佳温度:45-50oC
pH 稳定性:pH 7.0 - 9.0 (25oC, 20 小时)
热稳定性:低于 55oC(pH 7.0,10 分钟)

單位定義

在 pH7.0、37℃、牛血清白蛋白存在下,一单位酶每分钟从甘油三酯中产生 1.0 μmole 甘油。

外觀

冻干品,含有 Mg+2、胆酸钠和牛血清白蛋白(作为稳定剂)

分析報告

缩二脲法测定蛋白

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

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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R J Miles et al.
FEMS microbiology letters, 69(3), 283-287 (1992-01-15)
The propionate (Pro), decanoate (Dec) and laurate (Lau) esters of 5-(4-hydroxy-3,5-dimethoxyphenylmethylene)-2-thioxothiazoline++ +-3-acetic acid were assessed as substrates for lipase and esterase. On hydrolysis these substrates yield an intensely red coloured phenol which could be assayed at 505 nm. The Pro
K E Jaeger et al.
Microbial pathogenesis, 10(3), 173-182 (1991-03-01)
Lipase was isolated from P. aeruginosa by ultrafiltration of sterile-filtered culture supernatant. Gel filtration on Sepharose 4B yielded a broad peak corresponding to a molecular mass range of 100 to 1000 kDa. Electron microscopy of a negatively stained lipase preparation
Ming-Cheng Lin et al.
Chemistry and physics of lipids, 146(2), 85-93 (2007-02-06)
1,2-Ethylene-di-N-n-propylcarbamate (1) is characterized as an essential activator of Pseudomonas species lipase while 1,2-ethylene-di-N-n-butyl-, t-butyl-, n-heptyl-, and n-octyl-carbamates (2-5) are characterized as the pseudo substrate inhibitors of the enzyme in the presence of the detergent taurocholate or triton X-100. The
A Gagné et al.
Canadian journal of microbiology, 47(10), 908-915 (2001-11-23)
Eight closely related thermophilic strains were isolated from an aerobic and thermophilic treatment of swine wastes. The pleomorphic cells (short and long rods; cocci) showed peritrichous flagella, terminally swollen sporangium, and liberated spores exhibiting hairy appendages. The Gram reaction was
T Miida et al.
Arteriosclerosis, thrombosis, and vascular biology, 20(11), 2428-2433 (2000-11-14)
Prebeta1-high density lipoprotein (prebeta1-HDL), the initial acceptor of cell-derived cholesterol, can be generated from HDL(2) by hepatic lipase. Because bezafibrate elevates lipase activity, it may increase prebeta1-HDL at the expense of HDL(2). To answer this question, we determined the apolipoprotein

实验方案

Assay Procedure for Lipase

脂肪酶催化脂质的水解。该实验方案使用与酶活性成比例的比色测定法。用分光光度法在545 nm处测量醌亚胺染料的外观。

Enzymatic assay of lipase type XIII from Pseudomonas sp. using a coupled enzyme system of glycerol kinase and glycerophosphate oxidase (EC 3.1.1.3)

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