2UY3

ScCTS1_8-chlorotheophylline crystal structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of Saccharomyces Cerevisiae Chitinase 1 and Screening-Based Discovery of Potent Inhibitors.

Hurtado-Guerrero, R.Van Aalten, D.M.F.

(2007) Chem Biol 14: 589

  • DOI: 10.1016/j.chembiol.2007.03.015
  • Primary Citation of Related Structures:  
    2UY2, 2UY3, 2UY4, 2UY5

  • PubMed Abstract: 
  • Chitinases hydrolyse the beta(1,4)-glycosidic bonds of chitin, an essential fungal cell wall component. Genetic data on a subclass of fungal family 18 chitinases have suggested a role in cell wall morphology. Specific inhibitors of these enzymes would be useful as tools to study their role in cell wall morphogenesis and could possess antifungal properties ...

    Chitinases hydrolyse the beta(1,4)-glycosidic bonds of chitin, an essential fungal cell wall component. Genetic data on a subclass of fungal family 18 chitinases have suggested a role in cell wall morphology. Specific inhibitors of these enzymes would be useful as tools to study their role in cell wall morphogenesis and could possess antifungal properties. Here, we describe the crystallographic structure of a fungal "plant-type" family 18 chitinase, that of Saccharomyces cerevisiae CTS1. The enzyme is active against 4-methylumbelliferyl chitooligosaccharides and displays an unusually low pH optimum for activity. A library screen against ScCTS1 yielded hits with Ki 's as low as 3.2 microM. Crystal structures of ScCTS1 in complex with inhibitors from three series reveal striking mimicry of carbohydrate substrate by small aromatic moieties and a pocket that could be further exploited in optimization of these inhibitors.


    Organizational Affiliation

    Division of Biological Chemistry & Molecular Microbiology, School of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ENDOCHITINASEA294Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.2.1.14
UniProt
Find proteins for P29029 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P29029 
Go to UniProtKB:  P29029
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
H33
Query on H33

Download Ideal Coordinates CCD File 
B [auth A]8-CHLORO-1,3-DIMETHYL-3,7-DIHYDRO-1H-PURINE-2,6-DIONE
C7 H7 Cl N4 O2
RYIGNEOBDRVTHA-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
H33Ki:  600000   nM  Binding MOAD
H33Ki :  600000   nM  PDBBind
H33Ki:  340000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.411α = 90
b = 112.709β = 90
c = 37.331γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-04-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance