1PCG

Helix-stabilized cyclic peptides as selective inhibitors of steroid receptor-coactivator interactions

Structural Biology Knowledgebase: 1PCG SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.254
  • R-Value Work: 0.219

Literature

Macromolecules
Sequence Display for 1PCG

Classification: TRANSCRIPTION / INHIBITOR

Total Structure Weight: 58363.15

Macromolecule Entities
Molecule Chains Length Organism Details
estrogen receptor A, B 244 Homo sapiens Fragment: ligand-binding domain
Mutation: C381S, C417S, C530S
Gene Name(s): ESR1 Gene View ESR NR3A1
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG
peptide inhibitor E, F 9 synthetic Details: The sequence of the peptide is LYS-DCY-ILE-LEU-CYS-ARG-LEU-LEU-GLN.

Small Molecules
Ligands 1 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
EST
Query on EST

A, B ESTRADIOL
C18 H24 O2
VOXZDWNPVJITMN-ZBRFXRBCSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
External Ligand Annotations
ID Binding Affinity (Sequence Identity %)
EST EC50: 0.004 - 10 nM (98) BindingDB
IC50: 0.57 - 570 nM (95 - 98) BindingDB
Kd: 0.2 nM (98) BindingDB
Ki: 0.16 - 100 nM (98) BindingDB

N/A in BindingMoad
N/A in PDBbind
Modified Residues 1 Unique
ID Chains Type Formula 2D Diagram Parent
DCY
Query on DCY
E, F D-PEPTIDE LINKING C3 H7 N O2 S --

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.254
  • R-Value Work: 0.219
  • Space Group: C 2 2 21
  • Electron Density Server: EDS EDS

Unit Cell:

Length (Å) Angle (°)
a = 53.81 α = 90.00
b = 102.43 β = 90.00
c = 195.33 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2003-05-16
  • Released Date: 2003-10-28
  • Deposition author(s): Leduc, A.M., Trent, J.O., Wittliff, J.L., Bramlett, K.S., Briggs, S.L., Chirgadze, N.Y., Wang, Y., Burris, T.P., Spatola, A.F.

Revision History

  • 2011-07-13
    Type: Linkage | Details: Linkage
  • 2011-07-13
    Type: Sequence database correspondence | Details: Sequence database correspondence
  • 2011-07-13
    Type: Polymer description | Details: Changed inhibitor presentation or chemistry
  • 2011-07-13
    Type: Version format compliance | Details: compliance with PDB Exchange Dictionary V4
  • 2011-07-13
    Type: Atom nomenclature | Details: Atom nomenclature
  • 2011-07-13
    Type: Binding sites and description | Details: Binding sites and description
  • 2011-07-13
    Type: Non-polymer description | Details: Non-polymer description
  • 2011-07-13
    Type: Function and keywords | Details: Function and keywords