1BSX

STRUCTURE AND SPECIFICITY OF NUCLEAR RECEPTOR-COACTIVATOR INTERACTIONS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.70 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.249 
  • R-Value Observed: 0.249 

Starting Model: other
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wwPDB Validation   3D Report Full Report


This is version 2.1 of the entry. See complete history


Literature

Structure and specificity of nuclear receptor-coactivator interactions.

Darimont, B.D.Wagner, R.L.Apriletti, J.W.Stallcup, M.R.Kushner, P.J.Baxter, J.D.Fletterick, R.J.Yamamoto, K.R.

(1998) Genes Dev 12: 3343-3356

  • DOI: https://doi.org/10.1101/gad.12.21.3343
  • Primary Citation of Related Structures:  
    1BSX

  • PubMed Abstract: 

    Combinatorial regulation of transcription implies flexible yet precise assembly of multiprotein regulatory complexes in response to signals. Biochemical and crystallographic analyses revealed that hormone binding leads to the formation of a hydrophobic groove within the ligand binding domain (LBD) of the thyroid hormone receptor that interacts with an LxxLL motif-containing alpha-helix from GRIP1, a coactivator. Residues immediately adjacent to the motif modulate the affinity of the interaction; the motif and the adjacent sequences are employed to different extents in binding to different receptors. Such interactions of amphipathic alpha-helices with hydrophobic grooves define protein interfaces in other regulatory complexes as well. We suggest that these common structural elements impart flexibility to combinatorial regulation, whereas side chains at the interface impart specificity.


  • Organizational Affiliation

    Department of Cellular and Molecular Pharmacology, University of California at San Francisco (UCSF), San Francisco, California 94143 USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (THYROID HORMONE RECEPTOR BETA)A,
C [auth B]
260Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P10828 (Homo sapiens)
Explore P10828 
Go to UniProtKB:  P10828
PHAROS:  P10828
GTEx:  ENSG00000151090 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP10828
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (GRIP1)B [auth X],
D [auth Y]
13N/AMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
T3
Query on T3

Download Ideal Coordinates CCD File 
E [auth A],
F [auth B]
3,5,3'TRIIODOTHYRONINE
C15 H12 I3 N O4
AUYYCJSJGJYCDS-LBPRGKRZSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
T3 BindingDB:  1BSX Ki: min: 0.08, max: 2.3 (nM) from 5 assay(s)
Kd: min: 0.08, max: 0.14 (nM) from 4 assay(s)
IC50: min: 0.26, max: 500 (nM) from 5 assay(s)
EC50: min: 1.1, max: 35 (nM) from 8 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.70 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.249 
  • R-Value Observed: 0.249 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 95.2α = 90
b = 95.2β = 90
c = 137.6γ = 120
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-08-26
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-05-30
    Changes: Data collection, Derived calculations, Experimental preparation
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Database references, Derived calculations
  • Version 2.1: 2024-04-03
    Changes: Refinement description