5HI1

Backbone Modifications in the Protein GB1 Helix: Aib24, beta-3-Lys28, beta-3-Lys31, Aib35


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.217 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Comparison of design strategies for alpha-helix backbone modification in a protein tertiary fold.

Tavenor, N.A.Reinert, Z.E.Lengyel, G.A.Griffith, B.D.Horne, W.S.

(2016) Chem Commun (Camb) 52: 3789-3792

  • DOI: 10.1039/c6cc00273k
  • Primary Citation of Related Structures:  
    5HFY, 5HG2, 5HI1

  • PubMed Abstract: 
  • We report here the comparison of five classes of unnatural amino acid building blocks for their ability to be accommodated into an α-helix in a protein tertiary fold context. High-resolution structural characterization and analysis of folding thermodynamics yield new insights into the relationship between backbone composition and folding energetics in α-helix mimetics and suggest refined design rules for engineering the backbones of natural sequences ...

    We report here the comparison of five classes of unnatural amino acid building blocks for their ability to be accommodated into an α-helix in a protein tertiary fold context. High-resolution structural characterization and analysis of folding thermodynamics yield new insights into the relationship between backbone composition and folding energetics in α-helix mimetics and suggest refined design rules for engineering the backbones of natural sequences.


    Organizational Affiliation

    Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA. horne@pitt.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Immunoglobulin G-binding protein G
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H
57Streptococcus sp. 'group GMutation(s): 1 
Gene Names: spg
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
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download Ideal Coordinates CCD File 
I [auth C],
J [auth D]
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
AIB
Query on AIB
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H
L-PEPTIDE LINKINGC4 H9 N O2ALA
B3K
Query on B3K
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H
L-PEPTIDE LINKINGC7 H16 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.217 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.371α = 90
b = 73.43β = 99.35
c = 79.436γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
d*TREKdata reduction
d*TREKdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM107161

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-24
    Type: Initial release
  • Version 1.1: 2016-03-09
    Changes: Database references
  • Version 1.2: 2017-09-13
    Changes: Author supporting evidence, Derived calculations
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence