Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.198 

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This is version 1.3 of the entry. See complete history


Crystal structure of the N-terminal domain of sialoadhesin in complex with 3' sialyllactose at 1.85 A resolution.

May, A.P.Robinson, R.C.Vinson, M.Crocker, P.R.Jones, E.Y.

(1998) Mol Cell 1: 719-728

  • DOI: https://doi.org/10.1016/s1097-2765(00)80071-4
  • Primary Citation of Related Structures:  
    1QFO, 1QFP

  • PubMed Abstract: 

    The structure of the functional N-terminal domain from the extracellular region of the cell surface receptor sialoadhesin has been determined in complex with the oligosaccharide 3' sialyllactose. This provides structural information for the siglec family of proteins. The structure conforms to the V-set immunoglobulin-like fold but contains several distinctive features, including an intra-beta sheet disulphide and a splitting of the standard beta strand G into two shorter strands. These novel features appear important in adapting the V-set fold for sialic acid-mediated recognition. Analysis of the complex with 3'sialyllactose highlights three residues, conserved throughout the siglec family, as key features of the sialic acid-binding template. The complex is representative of the functional recognition interaction with carbohydrate and as such provides detailed information for a heterotypic cell adhesion interaction.

  • Organizational Affiliation

    Laboratory of Molecular Biophysics, University of Oxford, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (SIALOADHESIN)119Mus musculusMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q62230 (Mus musculus)
Explore Q62230 
Go to UniProtKB:  Q62230
IMPC:  MGI:99668
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ62230
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.198 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.9α = 90
b = 38.9β = 90
c = 152.5γ = 120
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: 1999-04-16
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references