6RSQ

Helical folded domain of mouse CAP1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.37 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Mechanism of synergistic actin filament pointed end depolymerization by cyclase-associated protein and cofilin.

Kotila, T.Wioland, H.Enkavi, G.Kogan, K.Vattulainen, I.Jegou, A.Romet-Lemonne, G.Lappalainen, P.

(2019) Nat Commun 10: 5320-5320

  • DOI: 10.1038/s41467-019-13213-2
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The ability of cells to generate forces through actin filament turnover was an early adaptation in evolution. While much is known about how actin filaments grow, mechanisms of their disassembly are incompletely understood. The best-characterized acti ...

    The ability of cells to generate forces through actin filament turnover was an early adaptation in evolution. While much is known about how actin filaments grow, mechanisms of their disassembly are incompletely understood. The best-characterized actin disassembly factors are the cofilin family proteins, which increase cytoskeletal dynamics by severing actin filaments. However, the mechanism by which severed actin filaments are recycled back to monomeric form has remained enigmatic. We report that cyclase-associated-protein (CAP) works in synergy with cofilin to accelerate actin filament depolymerization by nearly 100-fold. Structural work uncovers the molecular mechanism by which CAP interacts with actin filament pointed end to destabilize the interface between terminal actin subunits, and subsequently recycles the newly-depolymerized actin monomer for the next round of filament assembly. These findings establish CAP as a molecular machine promoting rapid actin filament depolymerization and monomer recycling, and explain why CAP is critical for actin-dependent processes in all eukaryotes.


    Organizational Affiliation

    Université de Paris, CNRS, Institut Jacques Monod, 75013, Paris, France.,Department of Physics, University of Helsinki, FI-00014, Helsinki, Finland.,Computational Physics Laboratory, Tampere University, FI-33101, Tampere, Finland.,HiLIFE Institute of Biotechnology, University of Helsinki, FI-00014, Helsinki, Finland. pekka.lappalainen@helsinki.fi.,HiLIFE Institute of Biotechnology, University of Helsinki, FI-00014, Helsinki, Finland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Adenylyl cyclase-associated protein 1
A, B, C, D
198Mus musculusMutation(s): 0 
Gene Names: Cap1 (Cap)
Find proteins for P40124 (Mus musculus)
Go to UniProtKB:  P40124
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, C, D
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.37 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.186 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 82.510α = 90.00
b = 91.410β = 90.00
c = 106.870γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement
PHASERphasing
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Academy of FinlandFinland320161
Academy of FinlandFinland307415

Revision History 

  • Version 1.0: 2019-11-27
    Type: Initial release
  • Version 1.1: 2019-12-04
    Type: Database references