Biochemical characterization of cholesterol-3-sulfate as the sole effector for the phosphorylation of HMG1 by casein kinase I in vitro.
Biochemical characterization of cholesterol-3-sulfate as the sole effector for the phosphorylation of HMG1 by casein kinase I in vitro.
复制标题
3-硫酸胆固醇作为酪蛋白激酶 I 体外磷酸化 HMG1 的唯一效应物的生化特征。
DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
K. Ohtsuki
中科院分区:
文献类型:
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作者:
M. Okano;S. Kano;H. Munakata;K. Ohtsuki
Phosphorylation of high mobility group protein 1 (HMG1) by casein kinase I (CK-I) and potent effectors (inhibitors and activators) of this phosphorylation were investigated in vitro. We found that (i) CK-I phosphorylates specifically threonine residues on HMG1 when incubated with cholesterol-3-sulfate (CH-3S), but no phosphorylation of HMG1 is detected in the presence of other cholesterol related compounds or their sulfated derivatives; (ii) this phosphorylation is selectively inhibited by heparin, but stimulated significantly by 3',4',7-trihydroxy-isofavone at low doses (0.1-3 microM); and (iii) CH-3S directly induces a drastic conformational change in HMG1. The latter finding provides a mechanism to explain how CH-3S alone can induce the phosphorylation of HMG1 by CK-I in vitro.
DOI:
10.1016/0167-4889(85)90198-3
发表时间:
1985
期刊:
Biochimica et biophysica acta
影响因子:
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作者:
Williams,ML;Hughes-Fulford,M;Elias,PM
通讯作者:
Elias,PM
影响因子:
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作者:
Cheng Cheng Zhang-Cheng;Sacha A. Krieg;D. J. Shapiro
通讯作者:
Cheng Cheng Zhang-Cheng;Sacha A. Krieg;D. J. Shapiro
DOI:
10.1016/s0021-9258(18)60501-0
发表时间:
1989-06
期刊:
The Journal of biological chemistry
影响因子:
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作者:
H. Flotow;P. Roach
通讯作者:
H. Flotow;P. Roach