2Q31

Actin Dimer Cross-linked Between Residues 41 and 374 and proteolytically cleaved by subtilisin between residues 47 and 48.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.249 
  • R-Value Observed: 0.251 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Multiple crystal structures of actin dimers and their implications for interactions in the actin filament.

Sawaya, M.R.Kudryashov, D.S.Pashkov, I.Adisetiyo, H.Reisler, E.Yeates, T.O.

(2008) Acta Crystallogr D Biol Crystallogr 64: 454-465

  • DOI: 10.1107/S0907444908003351
  • Primary Citation of Related Structures:  
    2Q1N, 2Q31, 2Q36

  • PubMed Abstract: 
  • The structure of actin in its monomeric form is known at high resolution, while the structure of filamentous F-actin is only understood at considerably lower resolution. Knowing precisely how the monomers of actin fit together would lead to a deeper understanding of the dynamic behavior of the actin filament ...

    The structure of actin in its monomeric form is known at high resolution, while the structure of filamentous F-actin is only understood at considerably lower resolution. Knowing precisely how the monomers of actin fit together would lead to a deeper understanding of the dynamic behavior of the actin filament. Here, a series of crystal structures of actin dimers are reported which were prepared by cross-linking in either the longitudinal or the lateral direction in the filament state. Laterally cross-linked dimers, comprised of monomers belonging to different protofilaments, are found to adopt configurations in crystals that are not related to the native structure of filamentous actin. In contrast, multiple structures of longitudinal dimers consistently reveal the same interface between monomers within a single protofilament. The reappearance of the same longitudinal interface in multiple crystal structures adds weight to arguments that the interface visualized is similar to that in actin filaments. Highly conserved atomic interactions involving residues 199-205 and 287-291 are highlighted.


    Related Citations: 
    • The crystal structure of a cross-linked actin dimer suggests a detailed molecular interface in F-actin.
      Kudryashov, D.S., Sawaya, M.R., Adisetiyo, H., Norcross, T., Hegyi, G., Reisler, E., Yeates, T.O.
      (2005) Proc Natl Acad Sci U S A 102: 13105

    Organizational Affiliation

    UCLA Department of Chemistry and Biochemistry, Los Angeles, CA 90095-1569, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Actin, alpha skeletal muscleA, B375Oryctolagus cuniculusMutation(s): 0 
Gene Names: ACTA1ACTA
Find proteins for P68135 (Oryctolagus cuniculus)
Explore P68135 
Go to UniProtKB:  P68135
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download Ideal Coordinates CCD File 
D [auth A], G [auth B]ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
LAR
Query on LAR

Download Ideal Coordinates CCD File 
E [auth A], H [auth B]LATRUNCULIN A
C22 H31 N O5 S
DDVBPZROPPMBLW-IZGXTMSKSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth A], F [auth B]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
LARIC50:  40   nM  BindingDB
LARIC50:  110   nM  BindingDB
LARIC50:  70   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.249 
  • R-Value Observed: 0.251 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 108.253α = 90
b = 71.984β = 104.68
c = 54.703γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
BOSdata collection

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-06-05
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description