3AZD

Crystal structure of tropomyosin N-terminal fragment at 0.98A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.98 Å
  • R-Value Free: 0.171 
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of a tropomyosin N-terminal fragment at 0.98 A resolution

Meshcheryakov, V.A.Krieger, I.Kostyukova, A.S.Samatey, F.A.

(2011) Acta Crystallogr.,Sect.D 67: 822-825

  • DOI: 10.1107/S090744491102645X

  • PubMed Abstract: 
  • Tropomyosin (TM) is an elongated two-chain protein that binds along actin filaments. Important binding sites are localized in the N-terminus of tropomyosin. The structure of the N-terminus of the long muscle α-TM has been solved by both NMR and X-ray ...

    Tropomyosin (TM) is an elongated two-chain protein that binds along actin filaments. Important binding sites are localized in the N-terminus of tropomyosin. The structure of the N-terminus of the long muscle α-TM has been solved by both NMR and X-ray crystallography. Only the NMR structure of the N-terminus of the short nonmuscle α-TM is available. Here, the crystal structure of the N-terminus of the short nonmuscle α-TM (αTm1bZip) at a resolution of 0.98 Å is reported, which was solved from crystals belonging to space group P3(1) with unit-cell parameters a = b = 33.00, c = 52.03 Å, α = β = 90, γ = 120°. The first five N-terminal residues are flexible and residues 6-35 form an α-helical coiled coil. The overall fold and the secondary structure of the crystal structure of αTM1bZip are highly similar to the NMR structure and the atomic coordinates of the corresponding C(α) atoms between the two structures superimpose with a root-mean-square deviation of 0.60 Å. The crystal structure validates the NMR structure, with the positions of the side chains being determined precisely in our structure.


    Organizational Affiliation

    Trans-Membrane Trafficking Unit, Okinawa Institute of Science and Technology, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
short alpha-tropomyosin,transcription factor GCN4
A, B
37Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: GCN4 (AAS3, ARG9)
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P03069
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.98 Å
  • R-Value Free: 0.171 
  • R-Value Work: 0.167 
  • Space Group: P 31
Unit Cell:
Length (Å)Angle (°)
a = 33.000α = 90.00
b = 33.000β = 90.00
c = 52.030γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
MOSFLMdata reduction
PHASESphasing
REFMACrefinement
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-10-19
    Type: Initial release
  • Version 1.1: 2017-06-14
    Type: Source and taxonomy, Structure summary