MAPs: cellular navigators for microtubule array orientations in Arabidopsis
2014
Struk, Sylwia | Dhonukshe, Pankaj
Microtubules are subcellular nanotubes composed of α- and β-tubulin that arise from microtubule nucleation sites and are mainly composed of γ-tubulin complexes. Cell wall encased plant cells have evolved four distinct microtubule arrays that regulate cell division and expansion. Microtubule-associated proteins, the so called MAPs, construct, destruct and reorganize microtubule arrays thus regulating their spatiotemporal transitions during the cell cycle. By physically binding to microtubules and/or modulating their functions, MAPs control microtubule dynamic instability and/or interfilament cross talk. We survey the recent analyses of Arabidopsis MAPs such as MAP65, MOR1, CLASP, katanin, TON1, FASS, TRM, TAN1 and kinesins in terms of their effects on microtubule array organizations and plant development.
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