2WW7

foldon containing beta-turn mimic


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.06 Å
  • R-Value Free: 0.140 
  • R-Value Work: 0.108 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Characterization of a Beta-Turn Mimic within a Protein-Protein Interface.

Eckhardt, B.Grosse, W.Essen, L.Geyer, A.

(2010) Proc.Natl.Acad.Sci.USA 107: 18336

  • DOI: 10.1073/pnas.1004187107
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • β-Turns are secondary structure elements not only exposed on protein surfaces, but also frequently found to be buried in protein-protein interfaces. Protein engineering so far considered mainly the backbone-constraining properties of synthetic β-turn ...

    β-Turns are secondary structure elements not only exposed on protein surfaces, but also frequently found to be buried in protein-protein interfaces. Protein engineering so far considered mainly the backbone-constraining properties of synthetic β-turn mimics as parts of surface-exposed loops. A β-turn mimic, Hot═Tap, that is available in gram amounts, provides two hydroxyl groups that enhance its turn-inducing properties besides being able to form side-chain-like interactions. NMR studies on cyclic hexapeptides harboring the Hot═Tap dipeptide proved its strong β-turn-inducing capability. Crystallographic analyses of the trimeric fibritin-foldon/Hot═Tap hybrid reveal at atomic resolution how Hot═Tap replaces a βI'-turn by a βII'-type structure. Furthermore, Hot═Tap adapts to the complex protein environment by participating in several direct and water-bridged interactions across the foldon trimer interface. As building blocks, β-turn mimics capable of both backbone and side-chain mimicry may simplify the design of synthetic proteins.


    Organizational Affiliation

    Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FIBRITIN
A, B, C, D, E, F
26Enterobacteria phage T2Mutation(s): 0 
Gene Names: wac
Find proteins for Q76VI8 (Enterobacteria phage T2)
Go to UniProtKB:  Q76VI8
Small Molecules
Modified Residues  4 Unique
IDChainsTypeFormula2D DiagramParent
TH6
Query on TH6
A, B, C, D, E, F
L-PEPTIDE LINKINGC4 H9 N O4THR
PRS
Query on PRS
A, B, C, D, E, F
L-PEPTIDE LINKINGC4 H7 N O2 SPRO
DAL
Query on DAL
A, B, C, D, E, F
D-PEPTIDE LINKINGC3 H7 N O2

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NA8
Query on NA8
A, B, C, D, E, F
L-PEPTIDE LINKINGC13 H14 N O2ALA
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.06 Å
  • R-Value Free: 0.140 
  • R-Value Work: 0.108 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 27.730α = 77.25
b = 28.500β = 88.00
c = 48.755γ = 69.45
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance