Activation of the cellular proto-oncogene product p21Ras by addition of a myristylation signal.
Activation of the cellular proto-oncogene product p21Ras by addition of a myristylation signal.
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通过添加肉豆蔻酰化信号激活细胞原癌基因产物 p21Ras。
DOI:
10.1126/science.2648572
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发表时间:
1989
期刊:
影响因子:
--
通讯作者:
Der,CJ
中科院分区:
文献类型:
--
作者:
Buss,JE;Solski,PA;Schaeffer,JP;MacDonald,MJ;Der,CJ
The 21-kD proteins encoded byrasoncogenes (p21Ras) are modified covalently by a palmitate attached to a cysteine residue near the carboxyl terminus. Changing cysteine at position 186 to serine in oncogenic forms produces a nonpalmitylated protein that fails to associate with membranes and does not transform NIH 3T3 cells. Nonpalmitylated p21Ras derivatives were constructed that contained myristic acid at their amino termini to determine if a different form of lipid modification could restore either membrane association or transforming activity. An activated p21Ras, altered in this way, exhibited both efficient membrane association and full transforming activity. Surprisingly, myristylated forms of normal cellular Ras were also transforming. This demonstrates that Ras must bind to membranes in order to transmit a signal for transformation, but that either myristate or palmitate can perform this role. However, the normal function of cellular Ras is diverted to transformation by myristate and therefore must be regulated ordinarily by some unique property of palmitate that myristate does not mimic. Myristylation thus represents a novel mechanism by which Ras can become transforming.
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DOI:
--
发表时间:
1988
期刊:
Biochemical and Biophysical Research Communications - BBRC
影响因子:
--
作者:
D. Breviario;M. Baroni;R. Dhar
通讯作者:
R. Dhar
影响因子:
4.8
作者:
J. Gibbs;M. Schaber;M. Marshall;E. Scolnick;I. Sigal
通讯作者:
I. Sigal
DOI:
10.1126/science.6344220
发表时间:
1983
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Rasheed,S;Norman,GL;Heidecker,G
通讯作者:
Heidecker,G
影响因子:
64.8
作者:
T. Y. Shih;A. Papageorge;P. E. Stokes;M. Weeks;E. Scolnick
通讯作者:
E. Scolnick
影响因子:
5.4
作者:
T. Y. Shih;M. Weeks;P. Gruss;R. Dhar;S. Oroszlan;E. Scolnick
通讯作者:
E. Scolnick