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- W3174772316 abstract "Non-centrosomal microtubule arrays serve crucial functions in cells, yet the mechanisms of their generation are poorly understood. During budding of the epithelial tubes of the salivary glands in the Drosophila embryo, we previously demonstrated that the activity of pulsatile apical-medial actomyosin depends on a longitudinal non-centrosomal microtubule array. Here we uncover that the exit from the last embryonic division cycle of the epidermal cells of the salivary gland placode leads to one centrosome in the cells losing all microtubule-nucleation capacity. This restriction of nucleation activity to the second, Centrobin-enriched, centrosome is key for proper morphogenesis. Furthermore, the microtubule-severing protein Katanin and the minus-end-binding protein Patronin accumulate in an apical-medial position only in placodal cells. Loss of either in the placode prevents formation of the longitudinal microtubule array and leads to loss of apical-medial actomyosin and impaired apical constriction. We thus propose a mechanism whereby Katanin-severing at the single active centrosome releases microtubule minus-ends that are then anchored by apical-medial Patronin to promote formation of the longitudinal microtubule array crucial for apical constriction and tube formation." @default.
- W3174772316 created "2021-07-05" @default.
- W3174772316 creator A5032022564 @default.
- W3174772316 creator A5068876941 @default.
- W3174772316 creator A5075544806 @default.
- W3174772316 date "2021-07-02" @default.
- W3174772316 modified "2023-10-14" @default.
- W3174772316 title "A release-and-capture mechanism generates an essential non-centrosomal microtubule array during tube budding" @default.
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- W3174772316 doi "https://doi.org/10.1038/s41467-021-24332-0" @default.
- W3174772316 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8253823" @default.
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- W3174772316 hasPublicationYear "2021" @default.
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