3A0M

Structure of (PPG)4-OVG-(PPG)4, monoclinic, twinned crystal


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.02 Å
  • R-Value Free: 0.143 
  • R-Value Work: 0.116 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Stabilization of triple-helical structures of collagen peptides containing a Hyp-Thr-Gly, Hyp-Val-Gly, or Hyp-Ser-Gly sequence.

Okuyama, K.Miyama, K.Morimoto, T.Masakiyo, K.Mizuno, K.Bachinger, H.P.

(2011) Biopolymers 95: 628-640

  • DOI: https://doi.org/10.1002/bip.21625
  • Primary Citation of Related Structures:  
    3A0M, 3A1H, 3ADM

  • PubMed Abstract: 

    The single-crystal structures of three collagen-like host-guest peptides, (Pro-Pro-Gly)(4) -Hyp-Yaa-Gly-(Pro-Pro-Gly)(4) [Yaa = Thr, Val, Ser; Hyp = (4R)-4-hydroxyproline] were analyzed at atomic resolution. These peptides adopted a 7/2-helical structure similar to that of the (Pro-Pro-Gly)(9) peptide. The stability of these triple helices showed a similar tendency to that observed in Ac-(Gly-Hyp-Yaa)(10) -NH(2) (Yaa = Thr, Val, Ser) peptides. On the basis of their detailed structures, the differences in the triple-helical stabilities of the peptides containing a Hyp-Thr-Gly, Hyp-Val-Gly, or Hyp-Ser-Gly sequence were explained in terms of van der Waals interactions and dipole-dipole interaction between the Hyp residue in the X position and the Yaa residue in the Y position involved in the Hyp(X):Yaa(Y) stacking pair. This idea also explains the inability of Ac-(Gly-Hyp-alloThr)(10) -NH(2) and Ac-(Gly-Hyp-Ala)(10) -NH(2) peptides to form triple helices. In the Hyp(X):Thr(Y), Hyp(X):Val(Y), and Hyp(X):Ser(Y) stacking pairs, the proline ring of the Hyp residues adopts an up-puckering conformation, in agreement with the residual preference of Hyp, but in disagreement with the positional preference of X in the Gly-Xaa-Yaa sequence.


  • Organizational Affiliation

    Department of Macromolecular Science, Graduate School of Science, Osaka University, Osaka 560-0043, Japan. okuyamak@chem.sci.osaka-u.ac.jp


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
collagen-like peptide
A, B, C, D, E
A, B, C, D, E, F
27N/AMutation(s): 4 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
HYP
Query on HYP
A, B, C, D, E
A, B, C, D, E, F
L-PEPTIDE LINKINGC5 H9 N O3PRO
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.02 Å
  • R-Value Free: 0.143 
  • R-Value Work: 0.116 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 26.124α = 90
b = 26.366β = 90.08
c = 79.939γ = 90
Software Package:
Software NamePurpose
SHELXmodel building
SHELXL-97refinement
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-03-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-07-27
    Changes: Database references, Other
  • Version 1.3: 2012-06-06
    Changes: Database references
  • Version 1.4: 2023-11-01
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary