1TAP

NMR SOLUTION STRUCTURE OF RECOMBINANT TICK ANTICOAGULANT PROTEIN (RTAP), A FACTOR XA INHIBITOR FROM THE TICK ORNITHODOROS MOUBATA


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

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This is version 1.2 of the entry. See complete history


Literature

NMR solution structure of the recombinant tick anticoagulant protein (rTAP), a factor Xa inhibitor from the tick Ornithodoros moubata.

Antuch, W.Guntert, P.Billeter, M.Hawthorne, T.Grossenbacher, H.Wuthrich, K.

(1994) FEBS Lett 352: 251-257

  • DOI: 10.1016/0014-5793(94)00941-4
  • Primary Citation of Related Structures:  
    1TAP

  • PubMed Abstract: 
  • The solution structure of the recombinant tick anticoagulant protein (rTAP) was determined by 1H nuclear magnetic resonance (NMR) spectroscopy in aqueous solution at pH 3.6 and 36 degrees C. rTAP is a 60-residue protein functioning as a highly specific inhibitor of the coagulation protease factor Xa, which was originally isolated from the tick Ornithodoros moubata ...

    The solution structure of the recombinant tick anticoagulant protein (rTAP) was determined by 1H nuclear magnetic resonance (NMR) spectroscopy in aqueous solution at pH 3.6 and 36 degrees C. rTAP is a 60-residue protein functioning as a highly specific inhibitor of the coagulation protease factor Xa, which was originally isolated from the tick Ornithodoros moubata. Its regular secondary structure consists of a two-stranded antiparallel beta-sheet with residues 22-28 and 32-38, and an alpha-helix with residues 51-60. The relative orientation of these regular secondary structure elements has nearly identical counterparts in the bovine pancreatic trypsin inhibitor (BPTI). In contrast, the loop between the beta-sheet and the C-terminal alpha-helix as well as the N-terminal 20-residue segment preceding the beta-sheet adopt different three-dimensional folds in the two proteins. These observations are discussed with regard to the implication of different mechanisms of protease inhibition by rTAP and by Kunitz-type protein proteinase inhibitors.


    Related Citations: 
    • Tick Anticoagulant Peptide (Tap) is a Novel Inhibitor of Blood Coagulation Factor Xa
      Waxman, L., Smith, D.E., Arcuri, K.E., Vlasuk, G.P.
      (1990) Science 248: 593

    Organizational Affiliation

    Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule-Hönggerberg, Zürich, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FACTOR XA INHIBITORA60Ornithodoros moubataMutation(s): 0 
UniProt
Find proteins for P17726 (Ornithodoros moubata)
Explore P17726 
Go to UniProtKB:  P17726
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 
  • OLDERADO: 1TAP Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-11-30
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance