Solution structure of the human TSG-6 Link module in the presence of a hyaluronan octasaccharide

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 250 
  • Conformers Submitted: 20 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

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This is version 1.4 of the entry. See complete history


The link module from ovulation- and inflammation-associated protein TSG-6 changes conformation on hyaluronan binding.

Blundell, C.D.Mahoney, D.J.Almond, A.DeAngelis, P.L.Kahmann, J.D.Teriete, P.Pickford, A.R.Campbell, I.D.Day, A.J.

(2003) J Biol Chem 278: 49261-49270

  • DOI: https://doi.org/10.1074/jbc.M309623200
  • Primary Citation of Related Structures:  
    1O7B, 1O7C

  • PubMed Abstract: 

    The solution structure of the Link module from human TSG-6, a hyaladherin with important roles in inflammation and ovulation, has been determined in both its free and hyaluronan-bound conformations. This reveals a well defined hyaluronan-binding groove on one face of the Link module that is closed in the absence of ligand. The groove is lined with amino acids that have been implicated in mediating the interaction with hyaluronan, including two tyrosine residues that appear to form essential intermolecular hydrogen bonds and two basic residues capable of supporting ionic interactions. This is the first structure of a non-enzymic hyaladherin in its active state, and identifies a ligand-induced conformational change that is likely to be conserved across the Link module superfamily. NMR and isothermal titration calorimetry experiments with defined oligosaccharides have allowed us to infer the minimum length of hyaluronan that can be accommodated within the binding site and its polarity in the groove; these data have been used to generate a model of the complex formed between the Link module and a hyaluronan octasaccharide.

  • Organizational Affiliation

    Department of Biochemistry, University of Oxford, South Parks Road, Oxford, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TUMOR NECROSIS FACTOR-INDUCIBLE PROTEIN TSG-6A [auth T]98Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P98066 (Homo sapiens)
Explore P98066 
Go to UniProtKB:  P98066
GTEx:  ENSG00000123610 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP98066
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 250 
  • Conformers Submitted: 20 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-10-23
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-06-14
    Changes: Structure summary
  • Version 1.4: 2018-01-24
    Changes: Data collection, Database references