1EYM

FK506 BINDING PROTEIN MUTANT, HOMODIMERIC COMPLEX

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history. 

Literature

A ligand-reversible dimerization system for controlling protein-protein interactions.

Rollins, C.T., Rivera, V.M., Woolfson, D.N., Keenan, T., Hatada, M., Adams, S.E., Andrade, L.J., Yaeger, D., van Schravendijk, M.R., Holt, D.A., Gilman, M., Clackson, T.

(2000) Proc.Natl.Acad.Sci.USA 97: 7096-7101

  • DOI: 10.1073/pnas.100101997

  • PubMed Abstract: 

    • Chemically induced dimerization provides a general way to gain control over intracellular processes. Typically, FK506-binding protein (FKBP) domains are fused to a signaling domain of interest, allowing crosslinking to be initiated by addition of a b ...

    Chemically induced dimerization provides a general way to gain control over intracellular processes. Typically, FK506-binding protein (FKBP) domains are fused to a signaling domain of interest, allowing crosslinking to be initiated by addition of a bivalent FKBP ligand. In the course of protein engineering studies on human FKBP, we discovered that a single point mutation in the ligand-binding site (Phe-36 --> Met) converts the normally monomeric protein into a ligand-reversible dimer. Two-hybrid, gel filtration, analytical ultracentrifugation, and x-ray crystallographic studies show that the mutant (F(M)) forms discrete homodimers with micromolar affinity that can be completely dissociated within minutes by addition of monomeric synthetic ligands. These unexpected properties form the basis for a "reverse dimerization" regulatory system involving F(M) fusion proteins, in which association is the ground state and addition of ligand abolishes interactions. We have used this strategy to rapidly and reversibly aggregate fusion proteins in different cellular compartments, and to provide an off switch for transcription. Reiterated F(M) domains should be generally useful as conditional aggregation domains (CADs) to control intracellular events where rapid, reversible dissolution of interactions is required. Our results also suggest that dimerization is a latent property of the FKBP fold: the crystal structure reveals a remarkably complementary interaction between the monomer binding sites, with only subtle changes in side-chain disposition accounting for the dramatic change in quaternary structure.

    Organizational Affiliation: 

    ARIAD Gene Therapeutics, Inc., 26 Landsdowne Street, Cambridge, MA 02139, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FK506 BINDING PROTEIN
A, B
107Homo sapiensMutation(s): 1 
Gene Names: FKBP1A (FKBP1, FKBP12)
EC: 5.2.1.8
Find proteins for P62942 (Homo sapiens)
Go to Gene View: FKBP1A
Go to UniProtKB:  P62942
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.230 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 81.680α = 90.00
b = 81.680β = 90.00
c = 93.940γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
Agrovatamodel building
X-PLORrefinement
ROTAVATAmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-08-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description
  • Version 1.4: 2018-01-31
    Type: Experimental preparation