7AWF

The Fk1 domain of FKBP51 in complex with (2R,5S,12R)-12-cyclohexyl-2-[2-(3,4-dimethoxyphenyl)ethyl]-15,15,16-trimethyl-3,19-dioxa-10,13,16-triazatricyclo[18.3.1.0^5,^10]tetracosa-1(24),20,22-triene-4,11,14,17-tetrone


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.194 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Macrocyclic FKBP51 Ligands Define a Transient Binding Mode with Enhanced Selectivity.

Voll, A.M.Meyners, C.Taubert, M.C.Bajaj, T.Heymann, T.Merz, S.Charalampidou, A.Kolos, J.Purder, P.L.Geiger, T.M.Wessig, P.Gassen, N.C.Bracher, A.Hausch, F.

(2021) Angew Chem Int Ed Engl 60: 13257-13263

  • DOI: 10.1002/anie.202017352
  • Primary Citation of Related Structures:  
    7AOU, 7AOT, 7AWF

  • PubMed Abstract: 
  • Subtype selectivity represents a recurring challenge in many drug discovery campaigns. A typical example is the FK506 binding protein 51 (FKBP51), which has emerged as an attractive drug target for mood disorders, obesity and chronic pain. The most advanced FKBP51 ligands of the SAFit class are highly selective vs ...

    Subtype selectivity represents a recurring challenge in many drug discovery campaigns. A typical example is the FK506 binding protein 51 (FKBP51), which has emerged as an attractive drug target for mood disorders, obesity and chronic pain. The most advanced FKBP51 ligands of the SAFit class are highly selective vs. FKBP52 but poorly discriminate against the homologs and off-targets FKBP12 and FKBP12.6. During a macrocyclization pilot study, we surprisingly observed that many of these macrocyclic analogs have unanticipated and unprecedented preference for FKBP51 over FKBP12 and FKBP12.6. Structural studies revealed that these macrocycles bind with a new binding mode featuring a transient conformation, which is disfavored for the small FKBPs. Using a conformation-sensitive assay we show that this binding mode occurs in solution and is characteristic for this new class of compounds. The discovered macrocycles are non-immunosuppressive, engage FKBP51 in cells, and block the cellular effect of FKBP51 on IKKα. Our findings provide a new chemical scaffold for improved FKBP51 ligands and the structural basis for enhanced selectivity.


    Organizational Affiliation

    Technical University Darmstadt, Clemens-Schöpf-Institute of Organic Chemistry and Biochemistry, Alarich-Weiss-Strasse 4, 64287, Darmstadt, GERMANY.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Peptidyl-prolyl cis-trans isomerase FKBP5A128Homo sapiensMutation(s): 3 
Gene Names: FKBP5AIG6FKBP51
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
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
S8N (Subject of Investigation/LOI)
Query on S8N

Download Ideal Coordinates CCD File 
B [auth A](2~{R},5~{S},12~{R})-12-cyclohexyl-2-[2-(3,4-dimethoxyphenyl)ethyl]-15,15,16-trimethyl-3,19-dioxa-10,13,16-triazatricyclo[18.3.1.0^{5,10}]tetracosa-1(24),20,22-triene-4,11,14,17-tetrone
C38 H51 N3 O8
NZPKRKKGZFFBRG-YIQDYSAESA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.194 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.46α = 90
b = 50.066β = 90
c = 58.781γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
REFMACrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-04-21
    Type: Initial release
  • Version 1.1: 2021-06-09
    Changes: Database references