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 
  • R-Value Observed: 0.188 

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:  
    6RSW, 6RSQ

  • 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 actin di ...

    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

    HiLIFE Institute of Biotechnology, University of Helsinki, FI-00014, Helsinki, Finland. pekka.lappalainen@helsinki.fi.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Adenylyl cyclase-associated protein 1 ABCD198Mus musculusMutation(s): 0 
Gene Names: Cap1Cap
Find proteins for P40124 (Mus musculus)
Explore P40124 
Go to UniProtKB:  P40124
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download Ideal Coordinates CCD File 
A, C, D
GLYCEROL
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 
  • R-Value Observed: 0.188 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.51α = 90
b = 91.41β = 90
c = 106.87γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



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
    Changes: Database references