1EX1

BETA-D-GLUCAN EXOHYDROLASE FROM BARLEY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.170 

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This is version 2.0 of the entry. See complete history


Literature

Three-dimensional structure of a barley beta-D-glucan exohydrolase, a family 3 glycosyl hydrolase.

Varghese, J.N.Hrmova, M.Fincher, G.B.

(1999) Structure 7: 179-190

  • DOI: 10.1016/s0969-2126(99)80024-0
  • Primary Citation of Related Structures:  
    1EX1

  • PubMed Abstract: 
  • Cell walls of the starchy endosperm and young vegetative tissues of barley (Hordeum vulgare) contain high levels of (1-->3,1-->4)-beta-D-glucans. The (1-->3,1-->4)-beta-D-glucans are hydrolysed during wall degradation in germinated grain and during wall loosening in elongating coleoptiles ...

    Cell walls of the starchy endosperm and young vegetative tissues of barley (Hordeum vulgare) contain high levels of (1-->3,1-->4)-beta-D-glucans. The (1-->3,1-->4)-beta-D-glucans are hydrolysed during wall degradation in germinated grain and during wall loosening in elongating coleoptiles. These key processes of plant development are mediated by several polysaccharide endohydrolases and exohydrolases.


    Related Citations: 
    • Crystallization and Preliminary X-Ray Analysis of Beta-D-Glucan Exohydrolase Isoenzyme Exo1 from Barley (Hordeum Vulgare); a Family 3 Glycosyl Hydrolase
      Varghese, J.N., Hrmova, M., Hoj, P.B., Fincher, G.B.
      (1998) Acta Crystallogr D Biol Crystallogr D54: 687

    Organizational Affiliation

    Biomolecular Research Institute, 343 Royal Parade, Parkville, Victoria 3052 Australia. jose.varghese@bioresi.com.au



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (BETA-D-GLUCAN EXOHYDROLASE ISOENZYME EXO1)A605Hordeum vulgareMutation(s): 0 
EC: 3.2.1.58
UniProt
Find proteins for Q9XEI3 (Hordeum vulgare subsp. vulgare)
Explore Q9XEI3 
Go to UniProtKB:  Q9XEI3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9XEI3
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-D-fucopyranose-(1-3)]2-acetamido-2-deoxy-beta-D-glucopyranoseB 6N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G82785HO
GlyCosmos:  G82785HO
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
C [auth A]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
GLC
Query on GLC

Download Ideal Coordinates CCD File 
D [auth A]alpha-D-glucopyranose
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.170 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.09α = 90
b = 102.09β = 90
c = 184.5γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PROTEINmodel building
SHARPphasing
REFMACrefinement
PROTEINphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-11-17
    Type: Initial release
  • Version 1.1: 2008-04-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Advisory, Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary