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Endocrinology, Vol 111, 1345-1349, Copyright © 1982 by Endocrine Society

ARTICLES

Regulation of DNA polymerase beta in rat adrenal gland by adrenocorticotropic hormone

A Nagasaka and S Yoshida

Analysis of extracts of rat adrenal glands showed that the activity of DNA polymerase beta was preferentially decreased upon hypophysectomy, whereas that of DNA polymerase alpha or gamma stayed relatively constant. The adrenal polymerase beta from hypophysectomized rats sedimented at 5-7S through sucrose gradients, whereas that from sham- operated controls sedimented at 3.3-3.6S. The large form of DNA polymerase beta was stable in 0.1 M KCl or 0.5% Nonidet P-40 but was converted into a 3.3S form in 0.5 M KCl. These changes in adrenal DNA polymerase beta were reversed by the daily injection of adrenocorticotropic hormone but were not reversed by exogenous glucocorticoid.




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Copyright © 1982 by The Endocrine Society