Alpha-adducin dissociates from F-actin and spectrin during platelet activation.
Alpha-adducin dissociates from F-actin and spectrin during platelet activation.
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DOI:
10.1083/jcb.200211122
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发表时间:
2003-05-12
期刊:
影响因子:
--
通讯作者:
Hartwig JH
中科院分区:
文献类型:
--
作者:
Barkalow KL;Italiano JE Jr;Chou DE;Matsuoka Y;Bennett V;Hartwig JH
Aspectrin-based skeleton uniformly underlies and supports the plasma membrane of the resting platelet, but remodels and centralizes in the activated platelet. α-Adducin, a phosphoprotein that forms a ternary complex with F-actin and spectrin, is dephosphorylated and mostly bound to spectrin in the membrane skeleton of the resting platelet at sites where actin filaments attach to the ends of spectrin molecules. Platelets activated through protease-activated receptor 1, FcγRIIA, or by treatment with PMA phosphorylate adducin at Ser726. Phosphoadducin releases from the membrane skeleton concomitant with its dissociation from spectrin and actin. Inhibition of PKC blunts adducin phosphorylation and release from spectrin and actin, preventing the centralization of spectrin that normally follows cell activation. We conclude that adducin targets actin filament ends to spectrin to complete the assembly of the resting membrane skeleton. Dissociation of phosphoadducin releases spectrin from actin, facilitating centralization of spectrin, and leads to the exposure of barbed actin filament ends that may then participate in converting the resting platelet's disc shape into its active form.
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影响因子:
4.8
作者:
Li, XL;Matsuoka, Y;Bennett, V
通讯作者:
Bennett, V
DOI:
10.1083/jcb.118.6.1421
发表时间:
1992-09
期刊:
The Journal of cell biology
影响因子:
--
作者:
Hartwig JH
通讯作者:
Hartwig JH
影响因子:
9.2
作者:
Ichetovkin, I;Grant, W;Condeelis, J
通讯作者:
Condeelis, J
影响因子:
64.8
作者:
GARDNER, K;BENNETT, V
通讯作者:
BENNETT, V
DOI:
10.1083/jcb.142.2.485
发表时间:
1998-07-27
期刊:
The Journal of cell biology
影响因子:
--
作者:
Matsuoka Y;Li X;Bennett V
通讯作者:
Bennett V