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Structure paper

TitleA nucleotide code governs Lis1's ability to relieve dynein autoinhibition.
Journal, issue, pagesNat Chem Biol, Year 2026
Publish dateJan 22, 2026
AuthorsIndigo C Geohring / Pengxin Chai / Bharat R Iyer / William D Ton / Jun Yang / Amy H Ide / Sydney C George / Jaiveer S Bagri / Samuel V Baird / Kai Zhang / Steven M Markus /
PubMed AbstractDynein-1 is a microtubule motor that transports numerous cytoplasmic cargoes. Activation of motility requires it first overcome an autoinhibited state before its assembly with dynactin and a cargo ...Dynein-1 is a microtubule motor that transports numerous cytoplasmic cargoes. Activation of motility requires it first overcome an autoinhibited state before its assembly with dynactin and a cargo adaptor. Studies suggest that Lis1 may relieve dynein's autoinhibited state, although evidence for this is lacking. We first determined the rules governing dynein-Lis1 binding, revealing that their binding affinity is regulated by the nucleotide-bound states of each of three nucleotide-binding pockets within dynein. We also found that distinct nucleotide 'codes' coordinate their binding stoichiometry by impacting binding affinity at two different sites within the dynein motor domain. Electron microscopy revealed that a 1 dynein:1 Lis1 complex directly promotes an uninhibited conformational state of dynein, whereas a 1:2 complex resembles the autoinhibited state. Cryo-electron microscopy revealed that the structural basis for Lis1 opening dynein relies on interactions with the linker domain. Our work reveals the biochemical basis by which Lis1 relieves dynein autoinhibition.
External linksNat Chem Biol / PubMed:41571912
MethodsEM (single particle)
Resolution3.2 - 4.1 Å
Structure data

EMDB-48239, PDB-9mfv:
Motor domain with Apo AAA1 and ADP AAA3 from yeast full-length dynein-1 in 0.1 mM ATP condition
Method: EM (single particle) / Resolution: 3.3 Å

EMDB-48240, PDB-9mfw:
Motor domain with ADP AAA1 and ADP AAA3 from yeast full-length dynein-1 in 0.1 mM ATP condition
Method: EM (single particle) / Resolution: 4.1 Å

EMDB-48241, PDB-9mfx:
Motor domain alone with Apo AAA1 and ADP AAA3 from yeast full-length dynein-1 and Pac1 in 0.1 mM ATP condition
Method: EM (single particle) / Resolution: 3.2 Å

EMDB-48242, PDB-9mfy:
Motor domain-Pac1 complex with ADP AAA1 and Apo AAA3 from yeast full-length dynein-1 and Pac1 in 0.1 mM ATP condition
Method: EM (single particle) / Resolution: 3.3 Å

Chemicals

ChemComp-ATP:
ADENOSINE-5'-TRIPHOSPHATE / ATP, energy-carrying molecule*YM

ChemComp-ADP:
ADENOSINE-5'-DIPHOSPHATE / ADP, energy-carrying molecule*YM

ChemComp-MG:
Unknown entry

Source
  • saccharomyces cerevisiae (brewer's yeast)
KeywordsMOTOR PROTEIN / dynein

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