Effects of urea and molybdate on the chick oviduct progesterone receptor.

Effects of urea and molybdate on the chick oviduct progesterone receptor.
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尿素和钼酸盐对鸡输卵管孕酮受体的影响。

DOI:
10.1016/0006-291x(83)90805-7
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发表时间:
1983
影响因子:
3.1
通讯作者:
E. Baulieu
E. Baulieu
中科院分区:
生物学4区
文献类型:
--
作者:
T. Buchou;J. Mester;J. Renoir;E. Baulieu

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当与配体复合时,鸡输卵管胞质溶胶孕酮受体可以暴露于高达3 M的尿素浓度(在0 ℃下)而不损失类固醇结合能力。在这些条件下,配体解离速率增加大于或等于10倍。如超离心分析所示,受体的”天然”8 S形式通过尿素(大于2 M)逐渐转化为4S物质。这种转化被Na 2 MoO 4(5-50 mM)抑制,表明Na 2 MoO 4通过直接相互作用稳定8 S分子。在尿素浓度高于2 M时,无配体受体逐渐失去其结合能力。“转化”的4S受体比8 S受体稳定性差,不能被双硫醚保护。
The chick oviduct cytosol progesterone receptor, when complexed with ligand, can be exposed to urea concentrations as high as 3 M (at 0 degrees C) without loss of steroid binding capacity. The ligand dissociation rate is increased greater than or equal to 10 fold under these conditions. The" native" 8 S form of the receptor is progressively converted to a 4 S species by urea (greater than 2 M) as seen in ultracentrifugation analysis. This conversion is inhibited by Na2MoO4 (5-50 mM) suggesting that molybdate stabilizes the 8 S molecule by direct interaction. At urea concentrations above 2 M, the ligand-free receptor looses progressively its binding capacity. The" transformed", 4 S receptor was less stable than the 8 S species, and could not be protected by molybdate.
在钼酸盐存在下,蛋白磷酸酶使糖皮质激素结合能力失活,并完全重新激活二硫苏糖醇。
DOI: --
发表时间: 1982
期刊: The Journal of biological chemistry
影响因子: --
作者:
Housley,PR;Dahmer,MK;Pratt,WB
通讯作者: Pratt,WB
黄体酮和子宫细胞质受体之间的动力学相互作用的温度依赖性。
DOI: 10.1016/0304-4165(80)90330-x
发表时间: 1980
期刊: Biochimica et biophysica acta
影响因子: --
作者:
Seeley,DH;Wang,WY;Salhanick,HA
通讯作者: Salhanick,HA