6RQK image
Entry Detail
PDB ID:
6RQK
Keywords:
Title:
Crystal structure of GH125 1,6-alpha-mannosidase from Clostridium perfringens in complex with mannoimidazole
Biological Source:
PDB Version:
Deposition Date:
2019-05-16
Release Date:
2019-08-28
Method Details:
Experimental Method:
Resolution:
1.85 Å
R-Value Free:
0.23
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Alpha-1,6-mannosidase
Chain IDs:A, B
Chain Length:435
Number of Molecules:2
Biological Source:Clostridium perfringens str. 13
Ligand Molecules
Primary Citation
Distortion of mannoimidazole supports a B2,5boat transition state for the family GH125 alpha-1,6-mannosidase from Clostridium perfringens.
Org.Biomol.Chem. 17 7863 7869 (2019)
PMID: 31407758 DOI: 10.1039/c9ob01161g

Abstact

Enzyme transition-state mimics can act as powerful inhibitors and allow structural studies that report on the conformation of the transition-state. Here, mannoimidazole, a mimic of the transition state of mannosidase catalyzed hydrolysis of mannosides, is shown to bind in a B2,5 conformation on the Clostridium perfringens GH125 α-1,6-mannosidase, providing additional evidence of a OS2-B2,5-1S5 conformational itinerary for enzymes of this family.

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Primary Citation of related structures