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    The architecture of kinesin-3 KLP-6 reveals a multilevel-lockdown mechanism for autoinhibition, Nat Commun, 25 Jul 2022

    發布時間:2022年07月25日

    Nature Communications, 25 July, 2022, DOI:https://doi.org/10.1038/s41467-022-32048-y

    The architecture of kinesin-3 KLP-6 reveals a multilevel-lockdown mechanism for autoinhibition

    Wenjuan Wang, Jinqi Ren, Weiye Song, Yong Zhang & Wei Feng

    Abstract

    Autoinhibition of kinesin-3 ensures the proper spatiotemporal control of the motor activity for intracellular transport, but the underlying mechanism remains elusive. Here, we determine the full-length structure of kinesin-3 KLP-6 in a compact self-folded state. Unexpectedly, all the internal coiled-coil segments and domains in KLP-6 cooperate to successively lock down the neck and motor domains. The first coiled-coil segment is melted into several short helices that work with the motor domain to restrain the entire neck domain. The second coiled-coil segment associates with its neighboring FHA and MBS domains and integrates with the tail MATH domain to form a supramodule that synergistically wraps around the motor domain to trap the nucleotide and hinder the microtubule binding. This multilevel-lockdown mechanism for autoinhibition could be applicable to other kinesin-3 motors.

    文章鏈接:https://www.nature.com/articles/s41467-022-32048-y

    相關報道:http://www.raciallyspeaking.com/kyjz/zxdt/202207/t20220728_6494619.html

     

     

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