Effect of phomopsin A on the alkylation of tubulin.
Effect of phomopsin A on the alkylation of tubulin.
复制标题
拟茎点菌素 A 对微管蛋白烷基化的影响。
DOI:
10.1016/0006-2952(90)90527-r
复制
发表时间:
1990
影响因子:
5.8
通讯作者:
Lacey,E
中科院分区:
文献类型:
--
作者:
Ludueña,RF;Roach,MC;Prasad,V;Lacey,E
Phomopsin A, a macrocyclic heptapeptide isolated from the fungusPhomopsis leptostromiformis, is a potent inhibitor of microtubule assembly and of vinblastine binding to tubulin. Like vinblastine, phomopsin A stabilizes colchicine binding to tubulin. Because phomopsin A is structurally very different from either vinblastine or maytansine, it was of interest to compare its effects on tubulin sulfhydryls to those of the other two drugs. Our results indicate that the effects of phomopsin A combine those of maytansine and vinblastine. Like maytansine, phomopsin A completely inhibited formation of a covalent cross-link between cysteines 12 and 201 or 211, induced byN,N'-ethylenebis(iodoacetamide); like vinblastine, phomopsin A strongly inhibited alkylation of tubulin by iodo[14C]acetamide. Our results are consistent with the hypothesis that phomopsin A binds to regions on tubulin overlapping those to which vinblastine and maytansine bind. We have shown previously that phomopsin A is a potent stabilizer of the tubulin molecule. We now find that when both phomopsin A and colchicine are bound to tubulin, the rate of decay of colchicine binding becomes insignificant.
登录
查看更多内容
影响因子:
2.9
作者:
Prasad,AR;Luduena,RF;Horowitz,PM
通讯作者:
Horowitz,PM
影响因子:
2.9
作者:
BORISY, GG
通讯作者:
BORISY, GG
影响因子:
3.5
作者:
H. Sternlicht;M. Yaffe;G. Farr
通讯作者:
G. Farr
DOI:
10.1016/0006-291x(76)90958-x
发表时间:
1976-01-01
影响因子:
3.1
作者:
MANDELBAUMSHAVIT, F;WOLPERTDEFILIPPES, MK;JOHNS, DG
通讯作者:
JOHNS, DG
DOI:
10.1038/icb.1982.29
发表时间:
1982
期刊:
The Australian journal of experimental biology and medical science
影响因子:
--
作者:
M. Jago;J. Peterson;A. Payne;D. Campbell
通讯作者:
D. Campbell