1U8X image
Deposition Date 2004-08-09
Release Date 2004-08-24
Last Version Date 2024-11-20
Entry Detail
PDB ID:
1U8X
Keywords:
HYDROLASE
Title:
CRYSTAL STRUCTURE OF GLVA FROM BACILLUS SUBTILIS, A METAL-REQUIRING, NAD-DEPENDENT 6-PHOSPHO-ALPHA-GLUCOSIDASE
Biological Source:
Source Organism:
Bacillus subtilis (Taxon ID: 1423)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.05 Å
R-Value Free:
0.22
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
I 2 2 2
1U8X validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Maltose-6'-phosphate glucosidase
Gene (Uniprot):glvA
Chain IDs:A (auth: X)
Chain Length:472
Number of Molecules:1
Biological Source:Bacillus subtilis
UniProt ID:P54716 Pfam ID:PF02056, PF11975 EC:3.2.1.122
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Ligand Molecules
G6P
MN
NAD
Primary Citation
Novel Catalytic Mechanism of Glycoside Hydrolysis Based on the Structure of an NAD(+)/Mn(2+)-Dependent Phospho-alpha-Glucosidase from Bacillus subtilis.
STRUCTURE 12 1619 1629 (2004)
PMID: 15341727 DOI: 10.1016/j.str.2004.06.020

Abstact

GlvA, a 6-phospho-alpha-glucosidase from Bacillus subtilis, catalyzes the hydrolysis of maltose-6'-phosphate and belongs to glycoside hydrolase family GH4. GH4 enzymes are unique in their requirement for NAD(H) and a divalent metal for activity. We have determined the crystal structure of GlvA in complex with its ligands to 2.05 A resolution. Analyses of the active site architecture, in conjunction with mechanistic studies and precedent from the nucleotide diphosphate hexose dehydratases and other systems, suggest a novel mechanism of glycoside hydrolysis by GlvA that involves both the NAD(H) and the metal.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
1NRH