6CGC

Crystal structure of human 17beta-HSD type 1 in ternary complex with 2-MeO-CC-156 and NADP+


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 

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Ligand Structure Quality Assessment 


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Literature

Combined Biophysical Chemistry Reveals a New Covalent Inhibitor with a Low-Reactivity Alkyl Halide.

Li, T.Maltais, R.Poirier, D.Lin, S.X.

(2018) J Phys Chem Lett 9: 5275-5280

  • DOI: https://doi.org/10.1021/acs.jpclett.8b02225
  • Primary Citation of Related Structures:  
    6CGC, 6CGE

  • PubMed Abstract: 

    17β-Hydroxysteroid dehydrogenase type 1 (17β-HSD1) plays a pivotal role in the progression of estrogen-related diseases because of its involvement in the biosynthesis of estradiol (E2), constituting a valuable therapeutic target for endocrine treatment. In the present study, we successfully cocrystallized the enzyme with the reversible inhibitor 2-methoxy-16β-( m-carbamoylbenzyl)-E2 (2-MeO-CC-156) as well as the enzyme with the irreversible inhibitor 3-(2-bromoethyl)-16β-( m-carbamoylbenzyl)-17β-hydroxy-1,3,5(10)-estratriene (PBRM). The structures of ternary complexes of 17β-HSD1-2-MeO-CC-156-NADP + and 17β-HSD1-PBRM-NADP + comparatively show the formation of a covalent bond between His 221 and the bromoethyl side chain of the inhibitor in the PBRM structure. A dynamic process including beneficial molecular interactions that favor the specific binding of a low-reactivity inhibitor and subsequent N-alkylation event through the participation of His 221 in the enzyme catalytic site clearly demonstrates the covalent bond formation. This finding opens the door to a new design of alkyl halide-based specific covalent inhibitors as potential therapeutic agents for different enzymes, contributing to the development of highly efficient inhibitors.


  • Organizational Affiliation

    CHU de Québec - Research Center , 2705 Boulevard Laurier , Québec , QC G1V 4G2 , Canada.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Estradiol 17-beta-dehydrogenase 1
A, B
328Homo sapiensMutation(s): 0 
Gene Names: HSD17B1E17KSREDH17B1EDH17B2EDHB17SDR28C1
EC: 1.1.1.62
UniProt & NIH Common Fund Data Resources
Find proteins for P14061 (Homo sapiens)
Explore P14061 
Go to UniProtKB:  P14061
PHAROS:  P14061
GTEx:  ENSG00000108786 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14061
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.75α = 90
b = 107.98β = 90
c = 115.72γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-01-16
    Type: Initial release
  • Version 1.1: 2023-10-04
    Changes: Data collection, Database references, Refinement description