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Background Microtubules (MTs) are polarized polymers with highly dynamic plus ends that stochastically switch between growth and shrinkage phases. In eukaryotic cells, a plethora of MT-associated proteins (MAPs) regulate the dynamics and higher-order organization of MTs to mediate distinct cellular functions. Plus-end tracking proteins (+TIPs) are a group of MAPs that specifically accumulate at the...
α‐ and β‐tubulins, the building blocks of the microtubule (MT) polymer, are encoded by multiple genes that are largely functionally redundant in plants. Null tubulin mutants are thus phenotypically indistinguishable from the wild type, but miss‐sense or deletion mutations of critical amino acid residues that are important for the assembly, stability, or dynamics of the polymer disrupt the proper organization...
The organization of plant microtubule arrays is thought to be regulated by phosphorylation and other signaling cascades, but the molecular components involved are largely unknown. We have previously found that a dominant missense mutation (phs1-1) in a putative kinase-docking motif of an Arabidopsis PHS1 phosphatase, which belongs to the mitogen-activated protein kinase phosphatase (MKP) family, compromises...
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