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  • Title: Phosphorylation of adrenal histone H3 is affected by angiotensin, ACTH, dibutyryl cAMP, and atrial natriuretic peptide.
    Author: Elliott ME.
    Journal: Life Sci; 1990; 46(20):1479-88. PubMed ID: 2161070.
    Abstract:
    Angiotensin (AII) and atrial natriuretic peptide (ANP) exert opposite effects on phosphorylation of a 17.6 kDa nuclear protein from bovine adrenal glomerulosa cells. The protein was separated by sodium dodecyl sulfate electrophoresis and blotted onto polyvinylidene difluoride, and the N-terminal sequence was obtained. This sequence corresponded to histone H3. Another polyacrylamide gel electrophoresis system was used to confirm that AII stimulated the phosphorylation of histone H3. ACTH[1-24] stimulated phosphorylation of the same protein. Dibutyryl cAMP stimulated phosphorylation of a 17.6-kDa protein, and two gel electrophoresis systems confirmed that the protein affected was histone H3. In situ peptide mapping using papain, of either purified standard histone H3 or of the adrenal 17.6-kDa protein, produced the same major fragment as observed by silver staining. Therefore, the 17.6-kDa protein that is affected by AII, ANP, ACTH, and dibutyryl cAMP is histone H3. This finding suggests that in addition to their mutually antagonistic effects on acute steroidogenesis, AII and ANP may exert opposite effects on adrenal cell functions involving the nucleus.
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