1K6F

Crystal Structure of the Collagen Triple Helix Model [(Pro-Pro-Gly)10]3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.185 

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This is version 1.4 of the entry. See complete history


Literature

Crystal structure of the collagen triple helix model [(Pro-Pro-Gly)(10)](3)

Berisio, R.Vitagliano, L.Mazzarella, L.Zagari, A.

(2002) Protein Sci 11: 262-270

  • DOI: 10.1110/ps.32602
  • Primary Citation of Related Structures:  
    1K6F

  • PubMed Abstract: 
  • The first report of the full-length structure of the collagen-like polypeptide [(Pro-Pro-Gly)(10)](3) is given. This structure was obtained from crystals grown in a microgravity environment, which diffracted up to 1.3 A, using synchrotron radiation. The final model, which was refined to an R(factor) of 0 ...

    The first report of the full-length structure of the collagen-like polypeptide [(Pro-Pro-Gly)(10)](3) is given. This structure was obtained from crystals grown in a microgravity environment, which diffracted up to 1.3 A, using synchrotron radiation. The final model, which was refined to an R(factor) of 0.18, is the highest-resolution description of a collagen triple helix reported to date. This structure provides clues regarding a series of aspects related to collagen triple helix structure and assembly. The strict dependence of proline puckering on the position inside the Pro-Pro-Gly triplets and the correlation between backbone and side chain dihedral angles support the propensity-based mechanism of triple helix stabilization/destabilization induced by hydroxyproline. Furthermore, the analysis of [(Pro-Pro-Gly)(10)](3) packing, which is governed by electrostatic interactions, suggests that charges may act as locking features in the axial organization of triple helices in the collagen fibrils.


    Related Citations: 
    • Preferred proline puckering in cis and trans peptide groups: implications for collagen stability
      Vitagliano, L., Berisio, R., Mastrangelo, A., Mazzarella, L., Zagari, A.
      (2001) Protein Sci 10: 2627
    • Structural Bases of Collagen Stabilization Induced by Proline Hydroxylation
      Vitagliano, L., Berisio, R., Mazzarella, L., Zagari, A.
      (2001) Biopolymers 58: 459
    • Crystal Structure of a Collagen-Like Polypeptide with Repeating Sequence Pro-Hyp-Gly at 1.4 A Resolution: Implications for Collagen Hydration
      Berisio, R., Vitagliano, L., Mazzarella, L., Zagari, A.
      (2001) Biopolymers 56: 8

    Organizational Affiliation

    Centro di Studio di Biocristallografia, CNR, I-80134 Napoli, Italy.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
collagen triple helix
A, B, C, D, E, F
A, B, C, D, E, F
30N/AMutation(s): 0 
UniProt
Find proteins for Q80BK4 (Saimiriine herpesvirus 2)
Explore Q80BK4 
Go to UniProtKB:  Q80BK4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ80BK4
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.185 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 26.907α = 90
b = 26.357β = 90
c = 182.498γ = 90
Software Package:
Software NamePurpose
ARP/wARPmodel building
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-01-30
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-24
    Changes: Database references, Structure summary
  • Version 1.4: 2018-01-31
    Changes: Experimental preparation