Structure of Ecballium Elaterium Trypsin Inhibitor II (Eeti-II): A Rigid Molecular ScaffoldKraetzner, R., Debreczeni, J.E., Pape, T., Schneider, T.R., Wentzel, A., Kolmar, H., Sheldrick, G.M., Uson, I.
(2005) Acta Crystallogr.,Sect.D 61: 1255
- PubMed: 16131759
- DOI: 10.1107/S0907444905021207
- Primary Citation of Related Structures:  1H9H, 1W7Z
- PubMed Abstract:
- Sequence Requirements of the Gpng Beta-Turn of the Ecballium Elaterium Trypsin Inhibitor II Explored by Combinatorial Library Screening
Wentzel, A.,Christmann, A.,Kraetzner, R.,Kolmar, H.
(1999) J.Biol.Chem. 274: 21037
- Use of Restrained Molecular Dynamics in Water to Determine Three-Dimensional Protein Structure: Prediction of the Three-Dimensional Structure of Ecballium Elaterium Trypsin Inhibitor II
Chiche, L.,Gaboriaud, C.,Heitz, A.,Mornon, J.P.,Castro, B.,Kollman, P.A.
(1989) Proteins: Struct.,Funct., Genet. 6: 405
- Min-21 and Min-23, the Smallest Peptides that Fold Like a Cystine-Stabilized Beta-Sheet Motif: Design, Solution Structure, and Thermal Stability
Heitz, A.,Le-Nguyen, D.,Chiche, L.
(1999) Biochemistry 38: 10615
The Ecballium elaterium trypsin inhibitor II (EETI-II) belongs to the family of squash inhibitors and is one of the strongest inhibitors known for trypsin. The eight independent molecules of EETI-II in the crystal structure reported here provide a go ...
The Ecballium elaterium trypsin inhibitor II (EETI-II) belongs to the family of squash inhibitors and is one of the strongest inhibitors known for trypsin. The eight independent molecules of EETI-II in the crystal structure reported here provide a good opportunity to test the hypothesis that this small cystine-knot protein (knottin) is sufficiently rigid to be used as a molecular scaffold for protein-engineering purposes. To extend this test, the structures of two complexes of EETI-II with trypsin have also been determined, one carrying a four-amino-acid mutation of EETI-II. The remarkable similarity of these structures confirms the rigidity of the molecular framework and hence its suitability as a molecular scaffold.
Lehrstuhl für Strukturchemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D37077 Göttingen, Germany.