EPI64 regulates microvillar subdomains and structure.
EPI64 regulates microvillar subdomains and structure.
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DOI:
10.1083/jcb.200604046
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发表时间:
2006-12-04
期刊:
影响因子:
--
通讯作者:
Bretscher A
中科院分区:
文献类型:
--
作者:
Hanono A;Garbett D;Reczek D;Chambers DN;Bretscher A
EPI64 is a TBC domain–containing protein that binds the PDZ domains of EBP50, which binds ezrin, a major actin-binding protein of microvilli. High-resolution light microscopy revealed that ezrin and EBP50 localize exclusively to the membrane-surrounded region of microvilli, whereas EPI64 localizes to variable regions in the structures. Overexpressing EPI64 results in its and EBP50's relocalization to the base of microvilli, including to the actin rootlet devoid of ezrin or plasma membrane. Uncoupling EPI64's binding to EBP50, expression of any construct mislocalizing its TBC domain, or knock down of EBP50 results in loss of microvilli. The TBC domain of EPI64 binds directly to Arf6-GTP. Overexpressing the TBC domain increases Arf6-GTP levels, and expressing dominant-active Arf6 results in microvillar loss. These data reveal that microvilli have distinct cytoskeletal subdomains and that EPI64 regulates microvillar structure.
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影响因子:
7.8
作者:
Fievet, BT;Gautreau, A;Roy, C;Del Maestro, L;Mangeat, P;Louvard, D;Arpin, M
通讯作者:
Arpin, M
影响因子:
4
作者:
James, MF;Beauchamp, RL;Ramesh, V
通讯作者:
Ramesh, V
影响因子:
4.8
作者:
Itoh, Takashi;Fukuda, Mitsunori
通讯作者:
Fukuda, Mitsunori
影响因子:
64.5
作者:
Honda, A;Nogami, M;Kanaho, Y
通讯作者:
Kanaho, Y
DOI:
10.1083/jcb.200212142
发表时间:
2003-08-18
期刊:
The Journal of cell biology
影响因子:
--
作者:
Aikawa Y;Martin TF
通讯作者:
Martin TF