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CAMSAP/Patronin family members regulate the organization and stability of microtubule minus ends in various systems ranging from mitotic spindles to differentiated epithelial cells and neurons. Mammalian CAMSAP2 and CAMSAP3 bind to growing microtubule minus ends, where they form stretches of stabilized microtubule lattice. The microtubule-severing ATPase katanin interacts with CAMSAPs and limits the length of CAMSAP-decorated microtubule stretches. Here, by using biochemical, biophysical, and structural approaches, we reveal that a short helical motif conserved in CAMSAP2 and CAMSAP3 binds to the heterodimer formed by the N- and C-terminal domains of katanin subunits p60 and p80, respectively. The identified CAMSAP-katanin binding mode is supported by mutational analysis and genome-editing experiments. It is strikingly similar to the one seen in the ASPM-katanin complex, which is responsible for microtubule minus-end regulation in mitotic spindles. Our work provides a general molecular mechanism for the cooperation of katanin with major microtubule minus-end regulators.
Pubmed ID: 29395789 RIS Download
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Software for x-ray detection and processing single-crystal monochromatic diffraction data recorded by the rotation method. XDS can process data images from CCD-, imaging-plate-, multiwire-, and pixel-detectors in a variety of formats.
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View all literature mentionsCell line HeLa S3 is a Cancer cell line with a species of origin Homo sapiens (Human)
View all literature mentionsCell line HEK293T/17 is a Transformed cell line with a species of origin Homo sapiens (Human)
View all literature mentionsThe SciCrunch Infrastructure was developed as a cooperative data platform to be used by diverse communities in making data more FAIR.
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