Article
Tobacco RhoGTPase ACTIVATING PROTEIN1 spatially restricts signaling of RAC/Rop to the apex of pollen tubes.
The Plant cell - 1 Nov 2006
Klahre Ulrich, Kost Benedikt
Abstract excerpt
Regulation by Rho-type small GTPases, such as RAC5, is important for the maintenance of polarity in tobacco (Nicotiana tabacum) pollen tubes. We previously showed that RhoGDI2 is necessary for RAC5 localization. Here, we describe the GTPase activating protein RhoGAP1 that controls the area of RAC5 activity. RhoGAP1 N-terminal and CRIB (for Cdc42/Rac-interactive binding) domains are both necessary for targeting...
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