Sensitive assay of cytochrome P450scc activity by high-performance liquid chromatography.

Sensitive assay of cytochrome P450scc activity by high-performance liquid chromatography.
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通过高效液相色谱法灵敏测定细胞色素 P450scc 活性。

DOI:
10.1016/0003-2697(89)90603-9
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发表时间:
1989
影响因子:
2.9
通讯作者:
Shigeo Horie
Shigeo Horie
中科院分区:
生物学4区
文献类型:
--
作者:
Sachiko Sugano;N. Morishima;Hodaka Ikeda;Shigeo Horie

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我们建立了一种简单的方法,用紫外吸收监测的高效液相色谱法分析胆固醇侧链裂解体系的中间体和产物。在胆固醇侧链裂解体系孵育后,通过热处理停止反应,产物转化为3- 1 -4-烯类固醇,与胆固醇氧化酶反应,在240 nm处有强烈吸收。然后用正相高效液相色谱法分析转化类固醇。因此,重组的肾上腺皮质细胞色素p450scc系统的催化活性很容易测定,灵敏度比这种转化高10倍以上。结果表明,22r -羟基胆碱-4-烯-3- 1可以作为细胞色素p450扫描的良好底物,并且在重组体系中可以清楚地检测到20R, 22r -二羟基衍生物作为反应中间体。
We have developed a simple procedure for analyzing the reaction intermediates and product of the cholesterol side-chain cleavage system by high-performance liquid chromatography with uv absorption monitoring. After the cholesterol side-chain cleavage system had been incubated and the reaction then halted by heat treatment, the product was converted into 3-one-4-en steroid showing intense absorption at 240 nm upon reaction with cholesterol oxidase. The converted steroids were then analyzed by normal-phase HPLC. In consequence, the catalytic activity of the reconstituted adrenocortical cytochrome P450sccsystem was readily assayed with a sensitivity more than 10-fold higher by this conversion. Also, it was shown that 22R-hydroxycholest-4-en-3-one could serve as a good substrate for cytochrome P450sccand that the 20R,22R-dihydroxy derivative could be clearly detected as a reaction intermediate in the reconstituted system.
(20R)-20-苯基-5-孕烯-3 beta,20-二醇抑制肾上腺皮质细胞色素 P-450scc。
DOI: --
发表时间: 1983
期刊: The Journal of biological chemistry
影响因子: --
作者:
Vickery,LE;Kellis,JT
通讯作者: Kellis,JT
肾上腺线粒体生产孕烯醇酮:胆固醇侧链裂解的新型高效液相色谱分析方法。
DOI: 10.1016/0378-4347(87)80066-x
发表时间: 1987
期刊: Journal of chromatography
影响因子: --
作者:
Tribble,DL;Glover,MR;Lambeth,JD
通讯作者: Lambeth,JD
使用纯化的细胞色素 P-450scc 进行多磷酸肌醇激活胆固醇侧链裂解。
DOI: --
发表时间: 1983
期刊: The Journal of biological chemistry
影响因子: --
作者:
Kowluru,RA;George,R;Jefcoate,CR
通讯作者: Jefcoate,CR