6DYV

Crystal structure of Helicobacter pylori 5'-methylthioadenosine/S-adenosyl homocysteine nucleosidase (MTAN) complexed with (3R,4S)-1-((4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl)-4-((pent-4-yn-1-ylthio)methyl)pyrrolidin-3-ol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.62 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Selective Inhibitors of Helicobacter pylori Methylthioadenosine Nucleosidase and Human Methylthioadenosine Phosphorylase.

Harijan, R.K.Hoff, O.Ducati, R.G.Firestone, R.S.Hirsch, B.M.Evans, G.B.Schramm, V.L.Tyler, P.C.

(2019) J. Med. Chem. 62: 3286-3296

  • DOI: 10.1021/acs.jmedchem.8b01642
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bacterial 5'-methylthioadenosine/ S-adenosylhomocysteine nucleosidase (MTAN) hydrolyzes adenine from its substrates to form S-methyl-5-thioribose and S-ribosyl-l-homocysteine. MTANs are involved in quorum sensing, menaquinone synthesis, and 5'-methyl ...

    Bacterial 5'-methylthioadenosine/ S-adenosylhomocysteine nucleosidase (MTAN) hydrolyzes adenine from its substrates to form S-methyl-5-thioribose and S-ribosyl-l-homocysteine. MTANs are involved in quorum sensing, menaquinone synthesis, and 5'-methylthioadenosine recycling to S-adenosylmethionine. Helicobacter pylori uses MTAN in its unusual menaquinone pathway, making H. pylori MTAN a target for antibiotic development. Human 5'-methylthioadenosine phosphorylase (MTAP), a reported anticancer target, catalyzes phosphorolysis of 5'-methylthioadenosine to salvage S-adenosylmethionine. Transition-state analogues designed for HpMTAN and MTAP show significant overlap in specificity. Fifteen unique transition-state analogues are described here and are used to explore inhibitor specificity. Several analogues of HpMTAN bind in the picomolar range while inhibiting human MTAP with orders of magnitude weaker affinity. Structural analysis of HpMTAN shows inhibitors extending through a hydrophobic channel to the protein surface. The more enclosed catalytic sites of human MTAP require the inhibitors to adopt a folded structure, displacing the phosphate nucleophile from the catalytic site.


    Organizational Affiliation

    Ferrier Research Institute , Victoria University of Wellington , Wellington 5040 , New Zealand.,Department of Biochemistry , Albert Einstein College of Medicine , New York 10461 , New York , United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
5'-methylthioadenosine/S-adenosylhomocysteine nucleosidase
A, B
245Helicobacter pylori (strain J99 / ATCC 700824)Mutation(s): 0 
Gene Names: mtnN (mtn)
EC: 3.2.2.30
Find proteins for Q9ZMY2 (Helicobacter pylori (strain J99 / ATCC 700824))
Go to UniProtKB:  Q9ZMY2
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OS3
Query on OS3

Download SDF File 
Download CCD File 
A, B
(3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-{[(pent-4-yn-1-yl)sulfanyl]methyl}pyrrolidin-3-ol
C17 H23 N5 O S
QRFSYYUFBJRRLL-KGLIPLIRSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, B
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.62 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.167 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 73.479α = 90.00
b = 73.479β = 90.00
c = 176.205γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
REFMACrefinement
iMOSFLMdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-03-20
    Type: Initial release
  • Version 1.1: 2019-04-10
    Type: Data collection, Database references
  • Version 1.2: 2019-04-24
    Type: Data collection, Database references