FUNCTION: Regulator of microtubule dynamics that plays a key role in myelination by promoting elongation of the myelin sheath (PubMed:31522887). Acts as a microtubule nucleation factor in oligodendrocytes: specifically localizes to the postsynaptic Golgi apparatus region, also named Golgi outpost, a...
FUNCTION: Regulator of microtubule dynamics that plays a key role in myelination by promoting elongation of the myelin sheath (PubMed:31522887). Acts as a microtubule nucleation factor in oligodendrocytes: specifically localizes to the postsynaptic Golgi apparatus region, also named Golgi outpost, and promotes microtubule nucleation, an important step for elongation of the myelin sheath (PubMed:31522887, PubMed:33831707). Required for both uniform polarized growth of distal microtubules as well as directing the branching of proximal processes (PubMed:31522887). Shows magnesium-dependent GTPase activity; the role of the GTPase activity is unclear (PubMed:21995432, PubMed:21316364). In addition to microtubule nucleation activity, also involved in microtubule bundling and stabilization of existing microtubules, thereby maintaining the integrity of the microtubule network (PubMed:17105200, PubMed:17693641, PubMed:18028908, PubMed:26289831). Regulates microtubule dynamics by promoting tubulin acetylation: acts by inhibiting the tubulin deacetylase activity of HDAC6 (PubMed:20308065, PubMed:23093407). Also regulates cell migration: phosphorylation by ROCK1 inhibits interaction with HDAC6, resulting in decreased acetylation of tubulin and increased cell motility (PubMed:23093407). Plays a role in cell proliferation by regulating the G1/S-phase transition (PubMed:23355470). Involved in astral microtubule organization and mitotic spindle orientation during early stage of mitosis; this process is regulated by phosphorylation by LIMK2 (PubMed:22328514). {ECO:0000269|PubMed:17105200, ECO:0000269|PubMed:17693641, ECO:0000269|PubMed:18028908, ECO:0000269|PubMed:20308065, ECO:0000269|PubMed:21316364, ECO:0000269|PubMed:21995432, ECO:0000269|PubMed:22328514, ECO:0000269|PubMed:23093407, ECO:0000269|PubMed:23355470, ECO:0000269|PubMed:26289831, ECO:0000269|PubMed:31522887}.
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GO - Biological processes (BP):
astral microtubule organization [GO:0030953]; cell division [GO:0051301]; microtubule bundle formation [GO:0001578]; microtubule nucleation by microtubule organizing center [GO:0051418]; microtubule polymerization [GO:0046785]; myelin assembly [GO:0032288]; negative regulation of tubulin deacetylati...
astral microtubule organization [GO:0030953]; cell division [GO:0051301]; microtubule bundle formation [GO:0001578]; microtubule nucleation by microtubule organizing center [GO:0051418]; microtubule polymerization [GO:0046785]; myelin assembly [GO:0032288]; negative regulation of tubulin deacetylation [GO:1904428]; oligodendrocyte development [GO:0014003]; oligodendrocyte differentiation [GO:0048709]; positive regulation of myelination [GO:0031643]; positive regulation of protein-containing complex assembly [GO:0031334]; positive regulation of protein polymerization [GO:0032273]; regulation of microtubule cytoskeleton organization [GO:0070507]
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GO - Molecular function (MF):
GTPase activity [GO:0003924]; magnesium ion binding [GO:0000287]; microtubule binding [GO:0008017]; protein homodimerization activity [GO:0042803]; tubulin binding [GO:0015631]...
GTPase activity [GO:0003924]; magnesium ion binding [GO:0000287]; microtubule binding [GO:0008017]; protein homodimerization activity [GO:0042803]; tubulin binding [GO:0015631]
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GO - Cellular component (CC):
cytoplasm [GO:0005737]; cytosol [GO:0005829]; microtubule [GO:0005874]; mitochondrion [GO:0005739]; mitotic spindle [GO:0072686]; nucleus [GO:0005634]; perinuclear region of cytoplasm [GO:0048471]; postsynaptic Golgi apparatus [GO:0150051]...
cytoplasm [GO:0005737]; cytosol [GO:0005829]; microtubule [GO:0005874]; mitochondrion [GO:0005739]; mitotic spindle [GO:0072686]; nucleus [GO:0005634]; perinuclear region of cytoplasm [GO:0048471]; postsynaptic Golgi apparatus [GO:0150051]
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