Dual activity at an enzyme active site: 3 beta,20 alpha-hydroxysteroid oxidoreductase from fetal blood.
Dual activity at an enzyme active site: 3 beta,20 alpha-hydroxysteroid oxidoreductase from fetal blood.
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酶活性位点具有双重活性:来自胎儿血液的 3β,20α-羟基类固醇氧化还原酶。
DOI:
10.1021/bi00262a016
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发表时间:
1982
期刊:
影响因子:
2.9
通讯作者:
Sweet,F
中科院分区:
文献类型:
--
作者:
Sharaf,MA;Sweet,F
Mohamed A. Sharaf1 and Frederick Sweet* abstract: An enzyme exhibiting both 3/3 and 20a steroid reductase activitiesfrom calf fetal red blood cells was purified to homogeneity as judged by sodium dodecyl sulfate-poly-acrylamide gel electrophoresis. 3/3, 20a-Hydroxysteroid oxi-doreductase (3/3, 20a-HSD) was found to be a single-stranded polypeptide with a molecular weight of 55 000±1000 by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and Sephadex G-100 chromatography. The amino acid compo-sition of 3/3, 20a-HSD was obtained. 17/3-Hydroxy-5aandrostan-3-one and progesterone were substrates for the enzyme’s 3/3 and 20a reductase activities, respectively, which required NADPH for both 3/3 [JTm= 9.4/uM; Vmar= 2.4 nmol min-1 (nmol of enzyme)" 1] and 20a [A^ m= 2.5 mM; Vmax=
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DOI:
--
发表时间:
1983
期刊:
International Archives of Allergy and Applied Immunology
影响因子:
--
作者:
R. Nussenblatt;M. Salinas;B. Waksman;I. Gery
通讯作者:
I. Gery
影响因子:
2.5
作者:
K. Fite;L. Bengston;P. Doran
通讯作者:
P. Doran
影响因子:
4.4
作者:
C. Chan;A. Palestine;R. Nussenblatt
通讯作者:
R. Nussenblatt
DOI:
--
发表时间:
1983
期刊:
The American journal of pathology
影响因子:
--
作者:
Boissy,RE;SmythJr,JR;Fite,KV
通讯作者:
Fite,KV
DOI:
10.1016/s0140-6736(83)90230-1
发表时间:
1983
期刊:
The Lancet
影响因子:
--
作者:
R. Nussenblatt;A. Rook;W. Wacker;A. Palestine;I. Scher;I. Gery
通讯作者:
I. Gery