3CTT image
Entry Detail
PDB ID:
3CTT
Keywords:
HYDROLASE
Title:
Crystal complex of N-terminal Human Maltase-Glucoamylase with Casuarine
Biological Source:
Source Organism:
Homo sapiens
Host Organism:
Drosophila melanogaster
PDB Version:
Deposition Date:
2008-04-14
Release Date:
2009-02-24
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.10 Å
R-Value Free:
0.27
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 21 21 21
3CTT validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Maltase-glucoamylase
Chain IDs:A
Chain Length:870
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:O43451 Pfam ID:PF00088, PF13802, PF01055, PF21365 EC:3.2.1.20
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
ASN A ASN GLYCOSYLATION SITE
Ligand Molecules
3CU
GOL
NAG
SO4
Primary Citation
Total syntheses of casuarine and its 6-O-alpha-glucoside: complementary inhibition towards glycoside hydrolases of the GH31 and GH37 families
Chemistry 15 1627 1636 (2009)
PMID: 19123216 DOI: 10.1002/chem.200801578

Abstact

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.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
2QLY
2QMJ