5W49

The crystal structure of human S-adenosylhomocysteine hydrolase (AHCY) bound to oxadiazole inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Identification of AHCY inhibitors using novel high-throughput mass spectrometry.

Uchiyama, N.Dougan, D.R.Lawson, J.D.Kimura, H.Matsumoto, S.I.Tanaka, Y.Kawamoto, T.

(2017) Biochem Biophys Res Commun 491: 1-7

  • DOI: https://doi.org/10.1016/j.bbrc.2017.05.107
  • Primary Citation of Related Structures:  
    5W49, 5W4B

  • PubMed Abstract: 

    S-adenosylhomocysteine hydrolase (AHCY) catalyzes the reversible hydrolysis of S-adenosylhomocysteine (SAH) to adenosine and l-homocysteine. This enzyme is frequently overexpressed in many tumor types and is considered to be a validated anti-tumor target. In order to enable the development of small molecule AHCY inhibitors as targeted cancer therapeutics we developed an assay based on a RapidFire high-throughput mass spectrometry detection system, which allows the direct measurement of AHCY enzymatic activity. This technique avoids many of the problems associate with the previously reported method of using a thiol-reactive fluorescence probes to measure AHCY activity. Screening of a ∼500,000 compound library using this technique identified multiple SAH competitive hits. Co-crystal structures of the hit compounds complexed with AHCY were obtained showing that the compounds indeed bind in the SAH site of the enzyme. In addition, some hit compounds increased the SAH levels in HCT116 cells and showed growth inhibition. These compounds could be promising starting points for the optimization of cancer treatments.


  • Organizational Affiliation

    Biomolecular Research Laboratories, Takeda Pharmaceutical Company Ltd., Pharmaceutical Research Division, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa, 251-8555, Japan. Electronic address: noriko.uchiyama@takeda.com.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Adenosylhomocysteinase
A, B
429Homo sapiensMutation(s): 0 
Gene Names: AHCYSAHH
EC: 3.3.1.1 (PDB Primary Data), 3.13.2.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P23526 (Homo sapiens)
Explore P23526 
Go to UniProtKB:  P23526
PHAROS:  P23526
GTEx:  ENSG00000101444 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23526
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download Ideal Coordinates CCD File 
C [auth A],
L [auth B]
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
9W1
Query on 9W1

Download Ideal Coordinates CCD File 
J [auth A],
T [auth B]
(4-amino-1,2,5-oxadiazol-3-yl)[(3R)-3-{4-[(3-methoxyphenyl)amino]-6-methylpyridin-2-yl}pyrrolidin-1-yl]methanone
C20 H22 N6 O3
BJUGLSYIEXNITK-CYBMUJFWSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
G [auth A]
H [auth A]
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
K [auth A],
M [auth B],
N [auth B],
O [auth B],
P [auth B],
Q [auth B],
R [auth B],
S [auth B]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.862α = 90
b = 136.102β = 90
c = 186.728γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data scaling
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-28
    Type: Initial release
  • Version 1.1: 2017-08-16
    Changes: Database references
  • Version 1.2: 2024-03-13
    Changes: Data collection, Database references