4Z2G

Serratia marcescens Chitinase B complexed with macrolide inhibitor 26

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.233 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Creation of Customized Bioactivity within a 14-Membered Macrolide Scaffold: Design, Synthesis, and Biological Evaluation Using a Family-18 Chitinase

Sugawara, A., Maita, N., Gouda, H., Yamamoto, T., Hirose, T., Kimura, S., Saito, Y., Nakano, H., Kasai, T., Nakano, H., Shiomi, K., Hirono, S., Watanabe, T., Taniguchi, H., Omura, S., Sunazuka, T.

(2015) J Med Chem 58: 4984-4997

  • DOI: 10.1021/acs.jmedchem.5b00175
  • Primary Citation of Related Structures:  
    4Z2G, 4Z2H, 4Z2I, 4Z2J, 4Z2K, 4Z2L

  • PubMed Abstract: 

    • Argifin, a 17-membered pentapeptide, inhibits chitinase. As argifin has properties that render it unsuitable as a drug development candidate, we devised a mechanism to create the structural component of argifin that bestows the chitinase inhibition and introduce it into a 14-membered macrolide scaffold ...

    Argifin, a 17-membered pentapeptide, inhibits chitinase. As argifin has properties that render it unsuitable as a drug development candidate, we devised a mechanism to create the structural component of argifin that bestows the chitinase inhibition and introduce it into a 14-membered macrolide scaffold. Here we describe (1) the designed macrolide, which exhibits ∼200-fold more potent chitinase inhibition than argifin, (2) the binding modes of the macrolide with Serratia marcescens chitinase B, and (3) the computed analysis explaining the reason for derivatives displaying increased inhibition compared to argifin, the macrolide aglycone displaying inhibition in a nanomolar range. This promises a class of chitinase inhibitors with novel skeletons, providing innovative insight for drug design and the use of macrolides as adaptable, flexible templates for use in drug discovery research and development.

    Organizational Affiliation: 

    †The Kitasato Institute, Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chitinase B A503Serratia marcescensMutation(s): 0 
Gene Names: chiB
EC: 3.2.1.14
Find proteins for P11797 (Serratia marcescens)
Explore P11797 
Go to UniProtKB:  P11797
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
M6V
Query on M6V
Download Ideal Coordinates CCD File 
A
(1R,2R,3R,6R,7S,8S,9R,10R,12R,13S,17S)-3-ethyl-2,10-dihydroxy-2,6,8,10,12,15,15,17-octamethyl-5-oxo-9-(prop-2-yn-1-yloxy)-4,14,16-trioxabicyclo[11.3.1]heptadec-7-yl {4-[N'-(methylcarbamoyl)carbamimidamido]butyl}carbamate
C35 H61 N5 O10
IRLKKNSSXICGJE-BWSSOXMQSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.233 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.98α = 90
b = 96.98β = 90
c = 193.84γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
iMOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
Cootmodel building

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-01
    Type: Initial release
  • Version 1.1: 2015-07-08
    Changes: Database references
  • Version 1.2: 2020-02-05
    Changes: Data collection, Database references, Derived calculations, Source and taxonomy, Structure summary