Testicular membranes with improved stability of the gonadotropin receptor.
Testicular membranes with improved stability of the gonadotropin receptor.
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睾丸膜具有改善的促性腺激素受体稳定性。
DOI:
10.1016/0304-4165(82)90328-2
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发表时间:
1982
期刊:
影响因子:
--
通讯作者:
Puett,D
中科院分区:
文献类型:
--
作者:
Noland,TD;Puett,D
A plasma membrane fraction has been prepared from rat testis using an aqueous double-phase polymer system containing dextran, poly(ethylene glycol) 6000 and Zn2+. The membrane-associated gonadotropin receptor for lutropin and human choriogonadotropin can be markedly stabilized by a thawing-washing step of frozen membranes which prolongs the apparent half-life of the unoccupied membrane-associated receptors from less than 1 h at 37°C to greater than 5 h. Also, no degradation of125I-labeled human choriogonadotropin was detected following incubation with the membrane fraction. The equilibrium binding was characterized by an apparent association constant of 1.6 · 1010M−1and a receptor content of 33 fmol/mg protein. Binding kinetic yielded an association rate constant of 1.0 · 108M−1, while the dissociation rate constant for human choriogonadotropin was too low to be accurately determined under the conditions used. In contrast, ovine lutropin could be reversibly bound to the membranes leaving the previously occupied receptors available for binding by125I-labeled human choriogonadotropin.
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影响因子:
3.9
作者:
L. Holladay;D. Puett
通讯作者:
D. Puett
影响因子:
--
作者:
M. Dufau;K. Catt
通讯作者:
K. Catt
影响因子:
4.8
作者:
V. Bhalla;J. Haskell;H. Grier;V. Mahesh
通讯作者:
V. Mahesh
DOI:
--
发表时间:
1978
期刊:
Biochemical and Biophysical Research Communications - BBRC
影响因子:
--
作者:
J. Saez;F. Haour;A. Cathiard
通讯作者:
A. Cathiard
DOI:
10.1016/s0021-9258(17)40825-8
发表时间:
1978
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
T. Nakahara;S. Terada;J. Pincus;G. Flouret;O. Hechter
通讯作者:
O. Hechter