Phosphorylation of RNA polymerases: specific association of protein kinase NII with RNA polymerase I.
Phosphorylation of RNA polymerases: specific association of protein kinase NII with RNA polymerase I.
复制标题
RNA 聚合酶的磷酸化:蛋白激酶 NII 与 RNA 聚合酶 I 的特异性关联。
DOI:
10.1098/rstb.1983.0046
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发表时间:
1983
期刊:
影响因子:
--
通讯作者:
Jacob,ST
中科院分区:
文献类型:
--
作者:
Rose,KM;Stetler,DA;Jacob,ST
The activities of the three DNA-dependent RNA polymerases from a rapidly growing rat tumour, Morris hepatoma 3924 A, and from rat liver were examined. The activity of RNA polymerase I was higher in the tumour than in the liver. The enhanced capacity for RNA synthesis was a result of a higher concentration of polymerase I in the tumour as well as of an activation of this enzyme vivo. The possibility that the high specific activity of the hepatoma polymerase I resulted from phosphorylation was investigated. Two major cyclic-AMP-independent nuclear casein kinases (NI and N il) were identified; the activity of protein kinase N il in the tumour was ten times that in liver. Protein kinase N il was capable of activating and phosphorylating RNA polymerase Iin vitro. This kinase could also stimulate RNA polymerase II activity, although to a lesser extent than RNA polymerase I. RNA polymerase III was not affected by protein kinase NIL Protein kinase N il was tightly associated with polymerase I and was found even in purified preparations of the polymerase. Antibodies against both RNA polymerase I and protein kinase N il were present in sera of patients with certain rheumatic autoimmune diseases. These results imply that RNA polymerase I and protein kinase NIl are in close associationin vivoas well asin vitroand that polymerase phosphorylation may regulate the rate of ribosomal RNA synthesis in the cell.
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DOI:
10.1073/pnas.79.23.7499
发表时间:
1982
影响因子:
11.1
作者:
Stetler,DA;Rose,KM;Wenger,ME;Berlin,CM;Jacob,ST
通讯作者:
Jacob,ST
DOI:
10.1016/b978-0-12-289503-6.50010-2
发表时间:
1980
期刊:
Isozymes
影响因子:
--
作者:
S. Jacob;K. Rose
通讯作者:
K. Rose
DOI:
--
发表时间:
1981
期刊:
Isozymes
影响因子:
--
作者:
Rose,KM;Duceman,BW;Jacob,ST
通讯作者:
Jacob,ST
DOI:
10.1042/bj1900781
发表时间:
1980
期刊:
The Biochemical journal
影响因子:
--
作者:
Duceman,BW;Jacob,ST
通讯作者:
Jacob,ST
DOI:
10.1016/0006-291x(76)90968-2
发表时间:
1976
影响因子:
3.1
作者:
Y. C. Lin;K. Rose;S. Jacob
通讯作者:
S. Jacob