Phosphorylation of Chromogranin A and Catecholamine Secretion Stimulated by Elevation of Intracellular Ca2+ in Cultured Bovine Adrenal Medullary Cells*
Phosphorylation of Chromogranin A and Catecholamine Secretion Stimulated by Elevation of Intracellular Ca2+ in Cultured Bovine Adrenal Medullary Cells*
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培养的牛肾上腺髓质细胞胞内 Ca2+ 升高刺激嗜铬蛋白 A 的磷酸化和儿茶酚胺分泌*
DOI:
--
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发表时间:
1996
影响因子:
4.8
通讯作者:
F. Izumi
中科院分区:
文献类型:
--
作者:
N. Yanagihara;Y. Oishi;Hideyuki Yamamoto;M. Tsutsui;Jun Kondoh;Tutomu Sugiura;E. Miyamoto;F. Izumi
We have recently isolated a new endogenous substrate of 70 kDa for Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) from bovine adrenal medullary cells (Yanagihara, N., Toyohira, Y., Yamamoto, H., Ohta, Y., Tsutsui, M., Miyamoto, E., and Izumi, F. (1994) Mol. Pharmacol. 46, 423-430). Here we report the sequence analysis of the 70-kDa protein and examine its phosphorylation by various protein kinases in vitro and by depolarization of the cultured cells. Protein sequencing and immunoblotting revealed that the 70-kDa protein is chromogranin A (CgA) or a closely related protein. Partially purified CgA was phosphorylated by cyclic AMP-dependent protein kinase and protein kinase C as well as CaM kinase II. Tryptic phosphopeptide mapping patterns of CgA differed among these protein kinases. In 32P-labeled bovine adrenal medullary cells, 56 mM K+ increased the phosphorylation of CgA and catecholamine secretion in similar time- and concentration-dependent manners, both of which were inhibited by 20 mM MgSO4, an inhibitor of voltage-dependent Ca2+ channels. These findings suggest that CgA serves as a substrate for several multifunctional protein kinases and that the elevation of the intracellular Ca2+ stimulates the phosphorylation of CgA associated with catecholamine secretion in cultured adrenal medullary cells.
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DOI:
10.1016/s0021-9258(18)77318-3
发表时间:
1990-08
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
S. Yoo;J. Albanesi
通讯作者:
S. Yoo;J. Albanesi
DOI:
10.1016/s0021-9258(18)33559-2
发表时间:
1982-11
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. Haycock;J. Meligeni;W. Bennett;J. Waymire
通讯作者:
J. Haycock;J. Meligeni;W. Bennett;J. Waymire
DOI:
--
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Griffith,LC;Schulman,H
通讯作者:
Schulman,H
DOI:
--
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
TerBush,DR;Bittner,MA;Holz,RW
通讯作者:
Holz,RW
DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
O'Connor,DT;Frigon,RP
通讯作者:
Frigon,RP