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7PMD

Cryo-EM structure of the actomyosin-V complex in the post-rigor transition state (AppNHp, central 1er)

Summary for 7PMD
Entry DOI10.2210/pdb7pmd/pdb
Related7PLT 7PM5 7PME 7PMF 7PMG 7PMH 7PMI 7PMJ 7PML
EMDB information13529
Related PRD IDPRD_002366
DescriptorUnconventional myosin-Va, Actin, alpha skeletal muscle, Phalloidin, ... (7 entities in total)
Functional Keywordsmotor protein, myosin, cytoskeleton, f-actin, phalloidin
Biological sourceGallus gallus (Chicken)
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Total number of polymer chains4
Total formula weight152379.41
Authors
Pospich, S.,Sweeney, H.L.,Houdusse, A.,Raunser, S. (deposition date: 2021-09-02, release date: 2021-12-22)
Primary citationPospich, S.,Sweeney, H.L.,Houdusse, A.,Raunser, S.
High-resolution structures of the actomyosin-V complex in three nucleotide states provide insights into the force generation mechanism.
Elife, 10:-, 2021
Cited by
PubMed Abstract: The molecular motor myosin undergoes a series of major structural transitions during its force-producing motor cycle. The underlying mechanism and its coupling to ATP hydrolysis and actin binding are only partially understood, mostly due to sparse structural data on actin-bound states of myosin. Here, we report 26 high-resolution cryo-EM structures of the actomyosin-V complex in the strong-ADP, rigor, and a previously unseen post-rigor transition state that binds the ATP analog AppNHp. The structures reveal a high flexibility of myosin in each state and provide valuable insights into the structural transitions of myosin-V upon ADP release and binding of AppNHp, as well as the actomyosin interface. In addition, they show how myosin is able to specifically alter the structure of F-actin.
PubMed: 34812732
DOI: 10.7554/eLife.73724
PDB entries with the same primary citation
Experimental method
ELECTRON MICROSCOPY (2.9 Å)
Structure validation

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