5ONV

Cryo-EM structure of F-actin in complex with ADP


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.1 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural transitions of F-actin upon ATP hydrolysis at near-atomic resolution revealed by cryo-EM.

Merino, F.Pospich, S.Funk, J.Wagner, T.Kullmer, F.Arndt, H.D.Bieling, P.Raunser, S.

(2018) Nat. Struct. Mol. Biol. 25: 528-537

  • DOI: 10.1038/s41594-018-0074-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The function of actin is coupled to the nucleotide bound to its active site. ATP hydrolysis is activated during polymerization; a delay between hydrolysis and inorganic phosphate (P <sub>i </sub>) release results in a gradient of ATP, ADP-P <sub>i </ ...

    The function of actin is coupled to the nucleotide bound to its active site. ATP hydrolysis is activated during polymerization; a delay between hydrolysis and inorganic phosphate (P i ) release results in a gradient of ATP, ADP-P i and ADP along actin filaments (F-actin). Actin-binding proteins can recognize F-actin's nucleotide state, using it as a local 'age' tag. The underlying mechanism is complex and poorly understood. Here we report six high-resolution cryo-EM structures of F-actin from rabbit skeletal muscle in different nucleotide states. The structures reveal that actin polymerization repositions the proposed catalytic base, His161, closer to the ╬│-phosphate. Nucleotide hydrolysis and P i release modulate the conformational ensemble at the periphery of the filament, thus resulting in open and closed states, which can be sensed by coronin-1B. The drug-like toxin jasplakinolide locks F-actin in an open state. Our results demonstrate in detail how ATP hydrolysis links to F-actin's conformational dynamics and protein interaction.


    Organizational Affiliation

    Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany.,Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, Germany. stefan.raunser@mpi-dortmund.mpg.de.,Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, Germany.,Institute of Organic and Macromolecular Chemistry, Friedrich-Schiller-Universit├Ąt Jena, Jena, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Actin, alpha skeletal muscle
A, B, C, D, E
375Oryctolagus cuniculusMutation(s): 0 
Gene Names: ACTA1 (ACTA)
Find proteins for P68135 (Oryctolagus cuniculus)
Go to Gene View: ACTA1
Go to UniProtKB:  P68135
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, B, C, D, E
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D, E
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
HIC
Query on HIC
A, B, C, D, E
L-PEPTIDE LINKINGC7 H11 N3 O2HIS
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.1 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Max Planck SocietyGermany--
State of ThuringiaGermany43- 5572-321-12040-12
European UnionGermany615984
Studienstiftung des deutschen VolkesGermany--

Revision History 

  • Version 1.0: 2018-06-13
    Type: Initial release
  • Version 1.1: 2019-11-06
    Type: Data collection, Database references