2K13

Solution NMR Structure of the Leech Protein Saratin, a Novel Inhibitor of Haemostasis


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 10 
  • Selection Criteria: 10 structure of lowest total and NOE energy 

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Literature

Structure of the leech protein saratin and characterization of its binding to collagen

Gronwald, W.Bomke, J.Maurer, T.Domogalla, B.Huber, F.Schumann, F.Kremer, W.Fink, F.Rysiok, T.Frech, M.Kalbitzer, H.R.

(2008) J Mol Biol 381: 913-927

  • DOI: 10.1016/j.jmb.2008.06.034
  • Primary Citation of Related Structures:  
    2K13

  • PubMed Abstract: 
  • The leech protein Saratin from Hirudo medicinalis prevents thrombocyte aggregation by interfering with the first binding step of the thrombocytes to collagen by binding to collagen. We solved the three-dimensional structure of the leech protein Saratin in solution and identified its collagen binding site by NMR titration experiments ...

    The leech protein Saratin from Hirudo medicinalis prevents thrombocyte aggregation by interfering with the first binding step of the thrombocytes to collagen by binding to collagen. We solved the three-dimensional structure of the leech protein Saratin in solution and identified its collagen binding site by NMR titration experiments. The NMR structure of Saratin consists of one alpha-helix and a five-stranded beta-sheet arranged in the topology betabetaalphabetabetabeta. The C-terminal region, of about 20 amino acids in length, adopts no regular structure. NMR titration experiments with collagen peptides show that the collagen interaction of Saratin takes place in a kind of notch that is formed by the end of the alpha-helix and the beta-sheet. NMR data-driven docking experiments to collagen model peptides were used to elucidate the putative binding mode of Saratin and collagen. Mainly, parts of the first and the end of the fifth beta-strand, the loop connecting the alpha-helix and the third beta-strand, and a short part of the loop connecting the fourth and fifth beta-strand participate in binding.


    Organizational Affiliation

    Institute of Biophysics and Physical Biochemistry, University of Regensburg, 93040 Regensburg, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SaratinA [auth X]103Haementeria officinalisMutation(s): 0 
UniProt
Find proteins for D0VWW8 (Haementeria officinalis)
Explore D0VWW8 
Go to UniProtKB:  D0VWW8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 10 
  • Selection Criteria: 10 structure of lowest total and NOE energy 
  • OLDERADO: 2K13 Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-10-21
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance