1KT0

Structure of the Large FKBP-like Protein, FKBP51, Involved in Steroid Receptor Complexes

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.375 
  • R-Value Work: 0.284 

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This is version 1.3 of the entry. See complete history. 


Literature

Structure of the large FK506-binding protein FKBP51, an Hsp90-binding protein and a component of steroid receptor complexes

Sinars, C.R., Cheung-Flynn, J., Rimerman, R.A., Scammell, J.G., Smith, D.F., Clardy, J.C.

(2003) Proc Natl Acad Sci U S A 100: 868-873

  • DOI: 10.1073/pnas.0231020100
  • Primary Citation of Related Structures:  
    1KT0, 1KT1

  • PubMed Abstract: 

    • The ability to bind immunosuppressive drugs such as cyclosporin and FK506 defines the immunophilin family of proteins, and the FK506-binding proteins form the FKBP subfamily of immunophilins. Some FKBPs, notably FKBP12 (the 12-kDa FK506-binding protein), have defined roles in regulating ion channels or cell signaling, and well established structures ...

    The ability to bind immunosuppressive drugs such as cyclosporin and FK506 defines the immunophilin family of proteins, and the FK506-binding proteins form the FKBP subfamily of immunophilins. Some FKBPs, notably FKBP12 (the 12-kDa FK506-binding protein), have defined roles in regulating ion channels or cell signaling, and well established structures. Other FKBPs, especially the larger ones, participate in important biological processes, but their exact roles and the structural bases for these roles are poorly defined. FKBP51 (the 51-kDa FKBP) associates with heat shock protein 90 (Hsp90) and appears in functionally mature steroid receptor complexes. In New World monkeys, FKBP51 has been implicated in cortisol resistance. We report here the x-ray structures of human FKBP51, to 2.7 A, and squirrel monkey FKBP51, to 2.8 A, by using multiwavelength anomalous dispersion phasing. FKBP51 is composed of three domains: two consecutive FKBP domains and a three-unit repeat of the TPR (tetratricopeptide repeat) domain. This structure of a multi-FKBP domain protein clarifies the arrangement of these domains and their possible interactions with other proteins. The two FKBP domains differ by an insertion in the second that affects the formation of the progesterone receptor complex.

    Organizational Affiliation: 

    Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853-1301, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
51 KDA FK506-BINDING PROTEINA457Homo sapiensMutation(s): 1 
Gene Names: FKBP5, AIG6, FKBP51
EC: 5.2.1.8
UniProt & NIH Common Fund Data Resources
Find proteins for Q13451 (Homo sapiens)
Explore Q13451 
Go to UniProtKB:  Q13451
PHAROS:  Q13451
GTEx:  ENSG00000096060 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13451
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A]		SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.375 
  • R-Value Work: 0.284 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.583α = 90
b = 87.583β = 90
c = 132.033γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
SHARPphasing
CNSrefinement
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-02-04
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2021-10-27
    Changes: Database references, Derived calculations