Arabidopsis Los RabGDI median la orientación de Rab y son cruciales para la función gametofítica masculina

Ya-Nan Wu1, Gui-Min Yin1, Fei Yu2

  • 1Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, 300071, China.

The New phytologist
|August 25, 2025
PubMed
Resumen

Arabidopsis Los RabGDI son esenciales para la fertilidad masculina, ya que regulan el desarrollo y crecimiento del polen. Su pérdida interrumpe la orientación de la Rab GTPasa en las células vegetales, afectando las vías esenciales de tráfico.

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Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
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