Kindlin-2 (Mig-2): a co-activator of beta3 integrins.
Kindlin-2 (Mig-2): a co-activator of beta3 integrins.
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DOI:
10.1083/jcb.200710196
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发表时间:
2008-05-05
期刊:
影响因子:
--
通讯作者:
Plow EF
中科院分区:
文献类型:
--
作者:
Ma YQ;Qin J;Wu C;Plow EF
Integrin activation is essential for dynamically linking the extracellular environment and cytoskeletal/signaling networks. Activation is controlled by integrins' short cytoplasmic tails (CTs). It is widely accepted that the head domain of talin (talin-H) can mediate integrin activation by binding to two sites in integrin β's CT; in integrin β3 this is an NPLY747 motif and the membrane-proximal region. Here, we show that the C-terminal region of integrin β3 CT, composed of a conserved TS752T region and NITY759 motif, supports integrin activation by binding to a cytosolic binding partner, kindlin-2, a widely distributed PTB domain protein. Co-transfection of kindlin-2 with talin-H results in a synergistic enhancement of integrin αIIbβ3 activation. Furthermore, siRNA knockdown of endogenous kindlin-2 impairs talin-induced αIIbβ3 activation in transfected CHO cells and blunts αvβ3-mediated adhesion and migration of endothelial cells. Our results thus identify kindlin-2 as a novel regulator of integrin activation; it functions as a coactivator.
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影响因子:
56.9
作者:
Kim, M;Carman, CV;Springer, TA
通讯作者:
Springer, TA
DOI:
10.1083/jcb.200303120
发表时间:
2003-07-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
Xi X;Bodnar RJ;Li Z;Lam SC;Du X
通讯作者:
Du X
影响因子:
2.9
作者:
Ma, Yan-Qing;Yang, Jun;Plow, Edward F.
通讯作者:
Plow, Edward F.
影响因子:
15.9
作者:
McEver, RP;Cummings, RD
通讯作者:
Cummings, RD
影响因子:
7.8
作者:
Huttenlocher, A;Ginsberg, MH;Horwitz, AF
通讯作者:
Horwitz, AF