[Isolation of a pituitary receptor for gonadoliberin (GnRH) in a highly purified state].

Autor: Jansem de Almeida Catanho MT, Bérault A, Théoleyre M, Kochman K, Jutisz M
Jazyk: francouzština
Zdroj: Comptes rendus de l'Academie des sciences. Serie III, Sciences de la vie [C R Acad Sci III] 1984; Vol. 298 (7), pp. 177-80.
Abstrakt: Using a gonadoliberin (GnRH) receptor preparation from the bovine pituitaries, we purified the receptor approximately 14,000 fold as compared to the starting material, with a overall yield of about 40%. The binding capacity of a iodinated GnRH analog, used for radioreceptor assay, increased from 16 fmoles/mg of protein in the crude material to 225 pmoles/mg of protein in the final product. The affinity constant was not modified by the purification process and remained close to Ka = 10(10) M-1. Electrophoretic analysis of the purified preparation suggests an apparent molecular mass of about 60,000 Da for the receptor.
Databáze: MEDLINE