Binding of myosin subfragment-1 to F-actin.
Binding of myosin subfragment-1 to F-actin.
复制标题
肌球蛋白亚片段 1 与 F-肌动蛋白的结合。
DOI:
10.1016/0006-291x(92)92354-z
复制
发表时间:
1992
影响因子:
3.1
通讯作者:
Borejdo,J
中科院分区:
文献类型:
--
作者:
Andreev,O;Borejdo,J
During a part of the hydrolytic cycle, myosin head (S1) carries no nucleotide and binds strongly to an actin filament forming a rigor bond. At saturating concentration of S1 in rigor, S1 is well known to form 1: 1 complex with actin. However, we have provided evidence that under certain conditions S1 could also form a complex with 2 actin monomers in a filament (Andreev, OA & Borejdo, J.(1991) Biochem. Biophys. Res. Comm. 177, 350–356). This view was recently challenged by Carlier & Didry (Carlier, MF. & Didry, D.(1992) Biochem. Biophys. Res. Comm. 183, 970–974) who interpreted our data by suggesting that F-actin underwent a simple depolymerization and implied that, when only actin in the F-form was scored, the real stoichiometry in our experiments was 1: 1. We show here that under conditions of our experiments less than 8% of actin was depolymerized. Moreover, we have repeated the experiments in the presence of phalloidin and show that under these conditions too, when S1 was added slowly to a fixed concentration of F-actin, it formed a different complex with F-actin than when it was added quickly. This confirms our original conclusion that S1 can bind actin in two different ways and shows that depolymerization of F-actin is not responsible for this finding.
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影响因子:
4.8
作者:
L. Greene;E. Eisenberg
通讯作者:
E. Eisenberg
影响因子:
2.9
作者:
J. Borejdo;O. Assulin
通讯作者:
O. Assulin
DOI:
10.1016/0006-291x(91)91990-t
发表时间:
1991
影响因子:
3.1
作者:
O. Andreev;J. Borejdo
通讯作者:
J. Borejdo
影响因子:
56.9
作者:
HUXLEY, HE
通讯作者:
HUXLEY, HE
影响因子:
5.6
作者:
S. Margossian;S. Margossian;Susan Lowey;Susan Lowey
通讯作者:
Susan Lowey