Crystal structure of a cell-wall invertase from Arabidopsis thaliana

Experimental Data Snapshot

  • Resolution: 2.15 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.202 

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X-ray diffraction structure of a cell-wall invertase from Arabidopsis thaliana.

Verhaest, M.Lammens, W.Le Roy, K.De Coninck, B.De Ranter, C.J.Van Laere, A.Van den Ende, W.Rabijns, A.

(2006) Acta Crystallogr D Biol Crystallogr 62: 1555-1563

  • DOI: https://doi.org/10.1107/S0907444906044489
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Cell-wall invertases play crucial roles during plant development. They hydrolyse sucrose into its fructose and glucose subunits by cleavage of the alpha1-beta2 glycosidic bond. Here, the structure of the Arabidopsis thaliana cell-wall invertase 1 (AtcwINV1; gene accession code At3g13790) is described at a resolution of 2.15 A. The structure comprises an N-terminal fivefold beta-propeller domain followed by a C-terminal domain formed by two beta-sheets. The active site is positioned in the fivefold beta-propeller domain, containing the nucleophile Asp23 and the acid/base catalyst Glu203 of the double-displacement enzymatic reaction. The function of the C-terminal domain remains unknown. Unlike in other GH 32 family enzyme structures known to date, in AtcwINV1 the cleft formed between both domains is blocked by Asn299-linked carbohydrates. A preliminary site-directed mutagenesis experiment (Asn299Asp) removed the glycosyl chain but did not alter the activity profile of the enzyme.

  • Organizational Affiliation

    Laboratorium voor Biokristallografie, Faculteit Farmaceutische Wetenschappen, K. U. Leuven, Herestraat 49, O&N II, Bus 822, B-3000 Leuven, Belgium.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
invertase541Arabidopsis thalianaMutation(s): 0 
Gene Names: At3g13790
Find proteins for Q43866 (Arabidopsis thaliana)
Explore Q43866 
Go to UniProtKB:  Q43866
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ43866
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G84676UY
GlyCosmos:  G84676UY
GlyGen:  G84676UY
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Experimental Data & Validation

Experimental Data

  • Resolution: 2.15 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.202 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.93α = 90
b = 162.89β = 90
c = 74.19γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-08-29
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2023-08-23
    Changes: Data collection, Database references, Refinement description, Structure summary