7DS2

Crystal structure of actin capping protein in complex with twinflin-1 C-terminus tail

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structural Insights into the Regulation of Actin Capping Protein by Twinfilin C-terminal Tail.

Takeda, S., Koike, R., Fujiwara, I., Narita, A., Miyata, M., Ota, M., Maeda, Y.

(2021) J Mol Biol 433: 166891-166891

  • DOI: https://doi.org/10.1016/j.jmb.2021.166891
  • Primary Citation of Related Structures:  
    7DS2, 7DS3, 7DS4, 7DS6, 7DS8, 7DSA, 7DSB

  • PubMed Abstract: 

    • Twinfilin is a conserved actin regulator that interacts with actin capping protein (CP) via C terminus residues (TWtail) that exhibits sequence similarity with the CP interaction (CPI) motif of CARMIL. Here we report the crystal structure of TWtail in complex with CP ...

    Twinfilin is a conserved actin regulator that interacts with actin capping protein (CP) via C terminus residues (TWtail) that exhibits sequence similarity with the CP interaction (CPI) motif of CARMIL. Here we report the crystal structure of TWtail in complex with CP. Our structure showed that although TWtail and CARMIL CPI bind CP to an overlapping surface via their middle regions, they exhibit different CP-binding modes at both termini. Consequently, TWtail and CARMIL CPI restrict the CP in distinct conformations of open and closed forms, respectively. Interestingly, V-1, which targets CP away from the TWtail binding site, also favors the open-form CP. Consistently, TWtail forms a stable ternary complex with CP and V-1, a striking contrast to CARMIL CPI, which rapidly dissociates V-1 from CP. Our results demonstrate that TWtail is a unique CP-binding motif that regulates CP in a manner distinct from CARMIL CPI.

    Organizational Affiliation: 

    Graduate School of Informatics, Nagoya University, Nagoya, Aichi 464-8601, Japan.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
F-actin-capping protein subunit alpha-1A286Gallus gallusMutation(s): 0 
Gene Names: CAPZA1
UniProt
Find proteins for P13127 (Gallus gallus)
Explore P13127 
Go to UniProtKB:  P13127
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP13127
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
F-actin-capping protein subunit beta isoforms 1B244Gallus gallusMutation(s): 0 
Gene Names: CAPZB
UniProt
Find proteins for P14315 (Gallus gallus)
Explore P14315 
Go to UniProtKB:  P14315
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14315
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Twinfilin-1C41Mus musculusMutation(s): 0 
Gene Names: Twf1, Ptk9
UniProt & NIH Common Fund Data Resources
Find proteins for Q91YR1 (Mus musculus)
Explore Q91YR1 
Go to UniProtKB:  Q91YR1
IMPC:  MGI:1100520
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ91YR1
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.04α = 90
b = 61.54β = 90
c = 161.47γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata processing
MOLREPphasing

Structure Validation

View Full Validation Report



View more in-depth experimental data
Entry History & Funding Information

Deposition Data

  • Released Date: 2021-03-03 
    • Deposition Author(s): Takeda, S.
Funding OrganizationLocationGrant Number
Japan Society for the Promotion of Science (JSPS)Japan16K17708
Japan Society for the Promotion of Science (JSPS)Japan17K07373
Japan Society for the Promotion of Science (JSPS)Japan20K06522

Revision History  (Full details and data files)

  • Version 1.0: 2021-03-03
    Type: Initial release
  • Version 1.1: 2021-03-17
    Changes: Database references
  • Version 1.2: 2021-04-07
    Changes: Database references