5DXG

Estrogen Receptor Alpha Ligand Binding Domain Y537S Mutant in Complex with Stapled Peptide SRC2-P5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Stapled Peptides with gamma-Methylated Hydrocarbon Chains for the Estrogen Receptor/Coactivator Interaction.

Speltz, T.E.Fanning, S.W.Mayne, C.G.Fowler, C.Tajkhorshid, E.Greene, G.L.Moore, T.W.

(2016) Angew Chem Int Ed Engl 55: 4252-4255

  • DOI: 10.1002/anie.201510557
  • Primary Citation of Related Structures:  
    5DXB, 5DXE, 5DXG, 5DX3, 5HYR

  • PubMed Abstract: 
  • "Stapled" peptides are typically designed to replace two non-interacting residues with a constraining, olefinic staple. To mimic interacting leucine and isoleucine residues, we have created new amino acids that incorporate a methyl group in the γ-pos ...

    "Stapled" peptides are typically designed to replace two non-interacting residues with a constraining, olefinic staple. To mimic interacting leucine and isoleucine residues, we have created new amino acids that incorporate a methyl group in the γ-position of the stapling amino acid S5. We have incorporated them into a sequence derived from steroid receptor coactivator 2, which interacts with estrogen receptor α. The best peptide (IC50 =89 nm) replaces isoleucine 689 with an S-γ-methyl stapled amino acid, and has significantly higher affinity than unsubstituted peptides (390 and 760 nm). Through X-ray crystallography and molecular dynamics studies, we show that the conformation taken up by the S-γ-methyl peptide minimizes the syn-pentane interactions between the α- and γ-methyl groups.


    Organizational Affiliation

    Department of Medicinal Chemistry and Pharmacognosy and UI Cancer Center, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL, 60612, USA. twmoore@uic.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Estrogen receptorAB261Homo sapiensMutation(s): 1 
Gene Names: ESR1ESRNR3A1
Find proteins for P03372 (Homo sapiens)
Explore P03372 
Go to UniProtKB:  P03372
NIH Common Fund Data Resources
PHAROS  P03372
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Stapled Peptide SRC2-P5CD13Homo sapiensMutation(s): 0 
Gene Names: NCOA2BHLHE75SRC2TIF2
Find proteins for Q15596 (Homo sapiens)
Explore Q15596 
Go to UniProtKB:  Q15596
NIH Common Fund Data Resources
PHAROS  Q15596
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EST
Query on EST

Download Ideal Coordinates CCD File 
A, B
ESTRADIOL
C18 H24 O2
VOXZDWNPVJITMN-ZBRFXRBCSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SCH
Query on SCH
A,BL-PEPTIDE LINKINGC4 H9 N O2 S2CYS
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
ESTIC50:  46   nM  BindingDB
ESTIC50:  3.5999999046325684   nM  BindingDB
ESTEC50:  0.75   nM  BindingDB
ESTEC50:  0.1599999964237213   nM  BindingDB
ESTIC50:  24   nM  BindingDB
ESTEC50:  0.3100000023841858   nM  BindingDB
ESTIC50:  28   nM  BindingDB
ESTEC50:  5.699999809265137   nM  BindingDB
ESTKi:  0.14000000059604645   nM  BindingDB
ESTEC50:  0.07999999821186066   nM  BindingDB
ESTIC50:  1.2999999523162842   nM  BindingDB
ESTKi:  2.200000047683716   nM  BindingDB
ESTKi:  0.11999999731779099   nM  BindingDB
ESTIC50:  0.4099999964237213   nM  BindingDB
ESTEC50:  0.25999999046325684   nM  BindingDB
ESTIC50:  0.5699999928474426   nM  BindingDB
ESTEC50:  0.05000000074505806   nM  BindingDB
ESTKi:  0.6499999761581421   nM  BindingDB
ESTKd:  100   nM  BindingDB
ESTIC50:  0.8199999928474426   nM  BindingDB
ESTIC50:  5.699999809265137   nM  BindingDB
ESTEC50:  0.10999999940395355   nM  BindingDB
ESTKi:  12   nM  BindingDB
ESTIC50:  4.699999809265137   nM  BindingDB
ESTEC50:  2.4000000953674316   nM  BindingDB
ESTEC50:  0.10000000149011612   nM  BindingDB
ESTKi:  0.18000000715255737   nM  BindingDB
ESTKi:  0.20999999344348907   nM  BindingDB
ESTIC50:  21.040000915527344   nM  BindingDB
ESTEC50:  2.299999952316284   nM  BindingDB
ESTEC50:  0.009999999776482582   nM  BindingDB
ESTIC50:  5.900000095367432   nM  BindingDB
ESTEC50:  0.20000000298023224   nM  BindingDB
ESTKi:  2   nM  BindingDB
ESTKi:  0.30000001192092896   nM  BindingDB
ESTIC50:  0.8999999761581421   nM  BindingDB
ESTIC50:  1.350000023841858   nM  BindingDB
ESTIC50:  1.600000023841858   nM  BindingDB
ESTIC50:  1.899999976158142   nM  BindingDB
ESTIC50:  4.400000095367432   nM  BindingDB
ESTIC50:  0.44999998807907104   nM  BindingDB
ESTEC50:  3.799999952316284   nM  BindingDB
ESTIC50:  3.200000047683716   nM  BindingDB
ESTEC50:  0.019999999552965164   nM  BindingDB
ESTKi:  0.10999999940395355   nM  BindingDB
ESTIC50:  1.2000000476837158   nM  BindingDB
ESTEC50:  1.100000023841858   nM  BindingDB
ESTIC50:  1.7000000476837158   nM  BindingDB
ESTEC50:  0.5600000023841858   nM  BindingDB
ESTIC50:  0.10999999940395355   nM  BindingDB
ESTEC50:  3.200000047683716   nM  BindingDB
ESTEC50:  0.11999999731779099   nM  BindingDB
ESTEC50:  2.200000047683716   nM  BindingDB
ESTKd:  3   nM  BindingDB
ESTIC50:  3.4000000953674316   nM  BindingDB
ESTIC50:  0.009999999776482582   nM  BindingDB
ESTEC50:  0.699999988079071   nM  BindingDB
ESTIC50:  0.75   nM  BindingDB
ESTIC50:  4.800000190734863   nM  BindingDB
ESTIC50:  2.200000047683716   nM  BindingDB
ESTIC50:  1.7999999523162842   nM  BindingDB
ESTIC50:  1   nM  BindingDB
ESTIC50:  1.399999976158142   nM  BindingDB
ESTEC50:  0.47999998927116394   nM  BindingDB
ESTIC50:  0.3499999940395355   nM  BindingDB
ESTEC50:  0.28999999165534973   nM  BindingDB
ESTKi:  0.1599999964237213   nM  BindingDB
ESTIC50:  1.899999976158142   nM  BindingDB
ESTIC50:  0.5   nM  BindingDB
ESTEC50:  0.07000000029802322   nM  BindingDB
ESTKd:  0.20000000298023224   nM  BindingDB
ESTIC50:  0.699999988079071   nM  BindingDB
ESTIC50:  3   nM  BindingDB
ESTEC50:  1.0499999523162842   nM  BindingDB
ESTIC50:  2   nM  BindingDB
ESTEC50:  0.5899999737739563   nM  BindingDB
ESTIC50:  4   nM  BindingDB
ESTEC50:  10   nM  BindingDB
ESTIC50:  1.5   nM  BindingDB
ESTIC50:  2   nM  BindingDB
ESTKi:  0.8299999833106995   nM  BindingDB
ESTIC50:  10   nM  BindingDB
ESTEC50:  0   nM  BindingDB
ESTIC50:  11   nM  BindingDB
ESTEC50:  0.3700000047683716   nM  BindingDB
ESTIC50:  12.5   nM  BindingDB
ESTEC50:  0.18000000715255737   nM  BindingDB
ESTEC50:  3   nM  BindingDB
ESTEC50:  5.699999809265137   nM  BindingDB
ESTEC50:  0.49000000953674316   nM  BindingDB
ESTIC50:  18   nM  BindingDB
ESTEC50:  2.7699999809265137   nM  BindingDB
ESTEC50:  1   nM  BindingDB
ESTKi:  100   nM  BindingDB
ESTEC50:  0.029999999329447746   nM  BindingDB
ESTEC50:  0.09000000357627869   nM  BindingDB
ESTEC50:  0.15000000596046448   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.121α = 90
b = 85.274β = 108.64
c = 58.613γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
HKL-3000phasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-07-27
    Type: Initial release
  • Version 1.1: 2020-02-19
    Changes: Data collection, Derived calculations