4OZB

Backbone Modifications in the Protein GB1 Helix: beta-ACPC24, beta-3-Lys28, beta-3-Lys31, beta-ACPC35


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.192 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Folding Thermodynamics of Protein-Like Oligomers with Heterogeneous Backbones.

Reinert, Z.E.Horne, W.S.

(2014) Chem Sci 5: 3325-3330

  • DOI: https://doi.org/10.1039/C4SC01094A
  • Primary Citation of Related Structures:  
    4OZA, 4OZB, 4OZC

  • PubMed Abstract: 

    The thermodynamics of protein folding are dictated by a complex interplay of interatomic interactions and physical forces. A variety of unnatural protein-like oligomers have the capacity to manifest defined folding patterns. While the energetics of folding in natural proteins is well studied, little is known about the forces that govern folding in modified backbones. Here, we explore the thermodynamic consequences of backbone alteration on protein folding, focusing on two types of chemical changes made in different structural contexts of a compact tertiary fold. Our results reveal a surprising favorable impact on folding entropy that accompanies modifications that increase disorder in the ensemble of unfolded states, due to differences in the solvation of natural and unnatural backbones.


  • Organizational Affiliation

    Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15217, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Streptococcal Protein GB1 Backbone Modified Variant: beta-ACPC24, beta-3-Lys28, beta-3-Lys31, beta-ACPC35
A, B
57Streptococcus sp.Mutation(s): 0 
UniProt
Find proteins for P19909 (Streptococcus sp. group G)
Explore P19909 
Go to UniProtKB:  P19909
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP19909
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
B3K
Query on B3K
A, B
L-PEPTIDE LINKINGC7 H16 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.192 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.496α = 90
b = 22.622β = 120.93
c = 64.523γ = 90
Software Package:
Software NamePurpose
CrystalCleardata collection
CrystalClearphasing
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
d*TREKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-07-16
    Type: Initial release
  • Version 1.1: 2014-09-24
    Changes: Database references
  • Version 1.2: 2014-12-24
    Changes: Database references
  • Version 1.3: 2017-11-22
    Changes: Derived calculations, Refinement description, Source and taxonomy
  • Version 1.4: 2018-03-21
    Changes: Data collection
  • Version 1.5: 2023-09-27
    Changes: Data collection, Database references, Refinement description
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection