3UC7

Trp-cage cyclo-TC1 - monoclinic crystal form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.1 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.149 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal and NMR structures of a Trp-cage mini-protein benchmark for computational fold prediction.

Scian, M.Lin, J.C.Le Trong, I.Makhatadze, G.I.Stenkamp, R.E.Andersen, N.H.

(2012) Proc.Natl.Acad.Sci.USA 109: 12521-12525

  • DOI: 10.1073/pnas.1121421109
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • To provide high-resolution X-ray crystallographic structures of a peptide with the Trp-cage fold, we prepared a cyclized version of this motif. Cyclized Trp-cage is remarkably stable and afforded two crystal forms suitable for X-ray diffraction. The ...

    To provide high-resolution X-ray crystallographic structures of a peptide with the Trp-cage fold, we prepared a cyclized version of this motif. Cyclized Trp-cage is remarkably stable and afforded two crystal forms suitable for X-ray diffraction. The resulting higher resolution crystal structures validate the prior NMR models and provide explanations for experimental observations that could not be rationalized by NMR structural data, including the structural basis for the increase in fold stability associated with motif cyclization and the manner in which a polar serine side chain is accommodated in the hydrophobic interior. A hexameric oligomer of the cyclic peptide is found in both crystal forms and indicates that under appropriate conditions, this minimized system may also serve as a model for protein-protein interactions.


    Organizational Affiliation

    Department of Chemistry, University of Washington, Seattle, WA 98195, USA. scian@u.washington.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cyclo-TC1
A, B, C, D, E, F
22N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
B, D
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.1 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.149 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 57.697α = 90.00
b = 48.748β = 116.91
c = 35.259γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
Blu-Icedata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-18
    Type: Initial release
  • Version 1.1: 2012-08-01
    Type: Database references
  • Version 1.2: 2012-08-15
    Type: Database references
  • Version 1.3: 2017-11-08
    Type: Refinement description