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Merck

P8279

Sigma-Aldrich

原儿茶酸3,4-双加氧酶 来源于假单胞菌

lyophilized powder, ≥3 units/mg solid

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About This Item

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

生物源

bacterial (Pseudomonas spp.)

形狀

lyophilized powder

比活性

≥3 units/mg solid

分子量

~700 kDa

運輸包裝

dry ice

儲存溫度

−20°C

一般說明

原儿茶酸3,4-双加氧酶属于非血红素铁家族酶,其活性位点含Fe3+

應用

来自假单胞菌属的原儿茶酸3,4-双加氧酶(PCD)在与对羟基苯甲酸羟化酶偶联后可用于酶法测定胆碱酯酶。在单分子实验中可改善有机荧光团稳定性 ,也可用于研究根瘤菌中原儿茶酸的代谢。
该酶被用于与原儿茶酸(PCA)和Trolox一起产生氧清除系统。该酶的非血红素铁中心可催化PCA和分子氧转化为β-羧基-顺,顺-粘康酸,同时抗氧化剂Trolox抑制花青染料的缓慢闪烁和光漂白。在单分子运动试验中,该酶与DMB-BSA(动力蛋白运动缓冲液-BSA)、ATP和原儿茶酸一起被用于制备成像缓冲液。

生化/生理作用

原儿茶酸3,4-双加氧酶催化3,4-二羟基苯甲酸(原儿茶酸)降解为β-羧基-顺,顺-粘康酸。

物理性質

结构:非血红素铁蛋白
抑制剂:Ag+、Hg++、 PCMB
最佳pH9.0
最佳温度:60-65℃
pH稳定性:pH 7.0-9.0(25℃,72 h)
热稳定性:低于50℃ (pH 6.0,1 h)

單位定義

在pH 7.5、37℃条件下,一单位酶每分钟可将1.0 μmM原儿茶酸氧化成3-羧基-,-粘康酸。

外觀

以冻干粉形式提供。

分析報告

缩二脲法测定蛋白

抑制劑

产品编号
说明
价格

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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A Buchan et al.
Applied and environmental microbiology, 67(12), 5801-5809 (2001-11-28)
Degradation of lignin-related aromatic compounds is an important ecological process in the highly productive salt marshes of the southeastern United States, yet little is known about the mediating organisms or their catabolic pathways. Here we report the diversity of a
Mindy I Davis et al.
Journal of the American Chemical Society, 124(4), 602-614 (2002-01-24)
The geometric and electronic structure of the high-spin ferric active site of protocatechuate 3,4-dioxygenase (3,4-PCD) has been examined by absorption (Abs), circular dichroism (CD), magnetic CD (MCD), and variable-temperature-variable-field (VTVH) MCD spectroscopies. Density functional (DFT) and INDO/S-CI molecular orbital calculations
M Contzen et al.
Molecular microbiology, 41(1), 199-205 (2001-07-17)
The genes for a protocatechuate 3,4-dioxygenase (P34O-II) with the ability to oxidize 4-sulphocatechol were cloned from the 4-aminobenzenesulphonate(sulphanilate)-degrading bacterium Hydrogenophaga intermedia strain S1 (DSMZ 5680). Sequence comparisons of the deduced amino acid sequences of both subunits of the P34O-II from
Nicole Michelotti et al.
Methods in enzymology, 475, 121-148 (2010-07-16)
Recent improvements in methods of single-particle fluorescence tracking have permitted detailed studies of molecular motion on the nanometer scale. In a quest to introduce these tools to the burgeoning field of DNA nanotechnology, we have exploited fluorescence imaging with one-nanometer
Brevibacterium fuscum protocatechuate 3, 4-dioxygenase. Purification, crystallization, and characterization.
Whittaker J W, et al.
The Journal of Biological Chemistry, 259(7), 4466-4475 (1984)

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