1U8X | pdb_00001u8x

CRYSTAL STRUCTURE OF GLVA FROM BACILLUS SUBTILIS, A METAL-REQUIRING, NAD-DEPENDENT 6-PHOSPHO-ALPHA-GLUCOSIDASE

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 
    0.221 (Depositor), 0.216 (DCC) 
  • R-Value Work: 
    0.195 (Depositor), 0.208 (DCC) 
  • R-Value Observed: 
    0.197 (Depositor) 

Starting Model: other
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This is version 1.5 of the entry. See complete history. 

Literature

Novel Catalytic Mechanism of Glycoside Hydrolysis Based on the Structure of an NAD(+)/Mn(2+)-Dependent Phospho-alpha-Glucosidase from Bacillus subtilis.

Rajan, S.S., Yang, X., Collart, F., Yip, V.L., Withers, S.G., Varrot, A., Thompson, J., Davies, G.J., Anderson, W.F.

(2004) Structure 12: 1619-1629

  • DOI: https://doi.org/10.1016/j.str.2004.06.020
  • Primary Citation Related Structures: 
    1U8X

  • PubMed Abstract: 

    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.

    • Organizational Affiliation: 
    • Molecular Pharmacology and Biological Chemistry, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.

Macromolecule Content 

  • Total Structure Weight: 55.06 kDa 
  • Atom Count: 3,672 
  • Modeled Residue Count: 436 
  • Deposited Residue Count: 472 
  • Unique protein chains: 1

Macromolecules

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Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Maltose-6'-phosphate glucosidaseA [auth X]472Bacillus subtilisMutation(s): 17 
Gene Names: glvA, glvG, glv-1
EC: 3.2.1.122
UniProt
Find proteins for P54716 (Bacillus subtilis (strain 168))
Explore P54716 
Go to UniProtKB:  P54716
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP54716
Sequence Annotations
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Reference Sequence

Small Molecules

Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
MSE
Query on MSE		A [auth X]L-PEPTIDE LINKINGC5 H11 N O2 SeMET

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free:  0.221 (Depositor), 0.216 (DCC) 
  • R-Value Work:  0.195 (Depositor), 0.208 (DCC) 
  • R-Value Observed: 0.197 (Depositor) 
Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.604α = 90
b = 102.017β = 90
c = 144.748γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-08-24
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Data collection, Database references, Derived calculations, Structure summary
  • Version 1.4: 2024-04-03
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 1.5: 2024-11-20
    Changes: Structure summary