Crystal structure of VIP36 exoplasmic/lumenal domain, Ca2+/Man3GlcNAc-bound form

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.224 

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Structural basis for recognition of high mannose type glycoproteins by mammalian transport lectin VIP36

Satoh, T.Cowieson, N.P.Hakamata, W.Ideo, H.Fukushima, K.Kurihara, M.Kato, R.Yamashita, K.Wakatsuki, S.

(2007) J Biol Chem 282: 28246-28255

  • DOI: https://doi.org/10.1074/jbc.M703064200
  • Primary Citation of Related Structures:  
    2DUO, 2DUP, 2DUQ, 2DUR, 2E6V

  • PubMed Abstract: 

    VIP36 functions as a transport lectin for trafficking certain high mannose type glycoproteins in the secretory pathway. Here we report the crystal structure of VIP36 exoplasmic/luminal domain comprising a carbohydrate recognition domain and a stalk domain. The structures of VIP36 in complex with Ca(2+) and mannosyl ligands are also described. The carbohydrate recognition domain is composed of a 17-stranded antiparallel beta-sandwich and binds one Ca(2+) adjoining the carbohydrate-binding site. The structure reveals that a coordinated Ca(2+) ion orients the side chains of Asp(131), Asn(166), and His(190) for carbohydrate binding. This result explains the Ca(2+)-dependent carbohydrate binding of this protein. The Man-alpha-1,2-Man-alpha-1,2-Man, which corresponds to the D1 arm of high mannose type glycan, is recognized by eight residues through extensive hydrogen bonds. The complex structures reveal the structural basis for high mannose type glycoprotein recognition by VIP36 in a Ca(2+)-dependent and D1 arm-specific manner.

  • Organizational Affiliation

    Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Vesicular integral-membrane protein VIP36
A, B, C, D, E
253Canis lupus familiarisMutation(s): 0 
Gene Names: LMAN2
Find proteins for P49256 (Canis lupus familiaris)
Explore P49256 
Go to UniProtKB:  P49256
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP49256
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
F, G
Glycosylation Resources
GlyTouCan:  G83092KI
GlyCosmos:  G83092KI
GlyGen:  G83092KI
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.2α = 90
b = 151.2β = 90
c = 177.1γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-07-24
    Type: Initial release
  • Version 1.1: 2007-10-22
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Structure summary
  • Version 2.1: 2023-10-25
    Changes: Data collection, Database references, Refinement description, Structure summary