biological source
bacterial (Pseudomonas spp.)
Quality Level
form
lyophilized powder
specific activity
≥3 units/mg solid
mol wt
~700 kDa
shipped in
dry ice
storage temp.
−20°C
General description
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+。
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)
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)
Application
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。
Biochem/physiol Actions
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。
Physical form
以冻干粉形式提供。
Analysis Note
缩二脲法测定蛋白
Other Notes
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-顺,顺-粘康酸。
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
法规信息
常规特殊物品
此项目有
Colin Echeverría Aitken et al.
Biophysical journal, 94(5), 1826-1835 (2007-10-09)
The application of single-molecule fluorescence techniques to complex biological systems places demands on the performance of single fluorophores. We present an enzymatic oxygen scavenging system for improved dye stability in single-molecule experiments. We compared the previously described protocatechuic acid/protocatechuate-3,4-dioxygenase system
Resonance Raman studies on protocatechuate 3, 4-dioxygenase inhibitor complexes
Que J L and Epstein R M
Biochemistry, 20(9), 2545-2549 (1981)
G Trautwein et al.
Journal of bacteriology, 183(3), 873-881 (2001-02-24)
Protocatechuate degradation is accomplished in a multistep inducible catabolic pathway in Acinetobacter sp. strain ADP1. The induction is brought about by the transcriptional regulator PcaU in concert with the inducer protocatechuate. PcaU, a member of the new IclR family of
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| P8279-25UN | 04061834401230 |