5HI1 | pdb_00005hi1

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 (Depositor), 0.251 (DCC) 
  • R-Value Work: 
    0.214 (Depositor), 0.215 (DCC) 
  • R-Value Observed: 
    0.217 (Depositor) 

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Validation slider image for 5HI1

This is version 2.0 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: https://doi.org/10.1039/c6cc00273k
  • Primary Citation 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.

    • Organizational Affiliation: 
    • Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA. horne@pitt.edu.

Macromolecule Content 

  • Total Structure Weight: 49.68 kDa 
  • Atom Count: 3,784 
  • Modeled Residue Count: 456 
  • Deposited Residue Count: 456 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:
|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Immunoglobulin G-binding protein G
A, B, C, D, E
A, B, C, D, E, F, G, H
57Streptococcus sp. 'group GMutation(s): 1 
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
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Reference Sequence

Small Molecules

Modified Residues  2 Unique
IDChains TypeFormula2D DiagramParent
AIB
Query on AIB
A, B, C, D, E
A, B, C, D, E, F, G, H
L-PEPTIDE LINKINGC4 H9 N O2ALA
B3K
Query on B3K
A, B, C, D, E
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 (Depositor), 0.251 (DCC) 
  • R-Value Work:  0.214 (Depositor), 0.215 (DCC) 
  • R-Value Observed: 0.217 (Depositor) 
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

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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
  • Version 1.4: 2023-09-27
    Changes: Data collection, Database references, Refinement description
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection