3CTT

Crystal complex of N-terminal Human Maltase-Glucoamylase with Casuarine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.228 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Total syntheses of casuarine and its 6-O-alpha-glucoside: complementary inhibition towards glycoside hydrolases of the GH31 and GH37 families

Cardona, F.Parmeggiani, C.Faggi, E.Bonaccini, C.Gratteri, P.Sim, L.Gloster, T.M.Roberts, S.Davies, G.J.Rose, D.R.Goti, A.

(2009) Chemistry 15: 1627-1636

  • DOI: 10.1002/chem.200801578
  • Primary Citation of Related Structures:  
    2JJB, 3CTT

  • PubMed Abstract: 
  • Total synthesis of naturally occurring casuarine (1) and the first total synthesis of casuarine 6-O-alpha-glucoside (2) were achieved through complete stereoselective nitrone cycloaddition, Tamao-Fleming oxidation and selective alpha-glucosylation as key ...

    Total synthesis of naturally occurring casuarine (1) and the first total synthesis of casuarine 6-O-alpha-glucoside (2) were achieved through complete stereoselective nitrone cycloaddition, Tamao-Fleming oxidation and selective alpha-glucosylation as key steps. Biological assays of the two compounds proved their strong and selective inhibitory properties towards glucoamylase NtMGAM and trehalase Tre37A, respectively, which place them among the most powerful inhibitors of these enzymes. The structural determination of the complexes of NtMGAM with 1 and of Tre37A with 2 revealed interesting similarities in the catalytic sites of these two enzymes which belong to different families and clans.


    Organizational Affiliation

    Department of Organic Chemistry U. Schiff, Laboratory of Design, Synthesis and Study of Biologically Active Heterocycles, University of Florence, Via della Lastruccia, 13, 50019 Sesto Fiorentino (FI), Italy.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Maltase-glucoamylase A870Homo sapiensMutation(s): 0 
Gene Names: MGAMMGAMGAML
EC: 3.2.1.20 (PDB Primary Data), 3.2.1.3 (UniProt)
Find proteins for O43451 (Homo sapiens)
Explore O43451 
Go to UniProtKB:  O43451
NIH Common Fund Data Resources
PHAROS:  O43451
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.228 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.692α = 90
b = 109.131β = 90
c = 109.438γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2008-04-14 
  • Released Date: 2009-02-24 
  • Deposition Author(s): Sim, L., Rose, D.R.

Revision History 

  • Version 1.0: 2009-02-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary