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- W4294090768 abstract "Abstract Microtubule motors, like cytoplasmic dynein-1, are tightly regulated to prevent inappropriate activity in cells. Dynein functions as a ∼4 MDa complex containing its cofactor dynactin and a cargo-specific coiled-coil adaptor. However, how dynein and dynactin recognise diverse adaptors, how they interact with each other during complex formation, and the role of critical regulators such as LIS1 remain unclear. To address this, we determine the cryo-EM structure of dynein-dynactin on microtubules with LIS1 and the lysosomal adaptor JIP3. We show how JIP3 specifies complex formation despite a shorter coiled coil and lack of identifiable motifs compared to typical adaptors. We find LIS1 directly binds dynactin’s p150 subunit, closely tethering it to dynein. This interaction is necessary for dynein’s cellular and in vitro activity. We also show how dynein’s intermediate chain relieves p150’s autoinhibition to enable LIS1 binding. Together, our data suggest LIS1 and p150 constrain dynein-dynactin to ensure efficient complex formation." @default.
- W4294090768 created "2022-09-01" @default.
- W4294090768 creator A5003480843 @default.
- W4294090768 creator A5012194078 @default.
- W4294090768 creator A5032878421 @default.
- W4294090768 creator A5035305116 @default.
- W4294090768 creator A5069557810 @default.
- W4294090768 date "2022-08-18" @default.
- W4294090768 modified "2023-10-17" @default.
- W4294090768 title "Molecular mechanism of dynein-dynactin activation by JIP3 and LIS1" @default.
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