Analogous inhibitors of elastase do not always bind analogously.Mattos, C., Rasmussen, B., Ding, X., Petsko, G.A., Ringe, D.
(1994) Nat.Struct.Mol.Biol. 1: 55-58
- PubMed: 7656008
- Primary Citation of Related Structures:
- PubMed Abstract:
- The Atomic Structure of Crystalline Porcine Pancreatic Elastase at 2.5 Angstroms Resolution. Comparisons with the Structure of Alpha-Chymotrypsin
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- Crystallographic Study of the Binding of a Tri-Fluoroacetyl Dipeptide Anilide Inhibitor with Elastase
Hughes, D.L.,Diecker, L.C.,Bieth, L.C.,Dimicoli, J.-L.
(1982) J.Mol.Biol. 162: 645
- Structure of Native Porcine Pancreatic Elastase at 1.65 Angstroms Resolution
Meyer, E.,Cole, G.,Radhakrishnan, R.,Epp, O.
(1988) Acta Crystallogr.,Sect.B 44: 26
- Structure of the Product Complex of Acetyl-Ala-Pro-Ala with Porcine Pancreatic Elastase at 1.65 Angstroms Resolution
Meyer, E.,Radhakrishnan, R.,Cole, G.,Presta, L.G.
(1986) J.Mol.Biol. 189: 533
- The Indirect Mechanism of Action of the Trifluoroacetyl Peptides on Elastase
Dimicoli, J.-L.,Renaud, A.,Bieth, J.
(1980) Eur.J.Biochem. 107: 423
- Interaction of the Peptide Cf3-Leu-Ala-Nh-C6H4-Cf3 (Tfla) with Porcine Pancreatic Elastase. X-Ray Studies at 1.8 Angstroms
Li De La Sierra, I.,Papamichael, E.,Sakarelos, C.,Dimicoli, J.-L.,Prange, T.
(1990) J.Mol.Recog. 3: 36
It has been assumed that the structure of a single inhibitor complex is sufficient to define the available subsites of an enzyme that has a unique binding site and a uniquely defined mode for ligand binding--the specificity for these subsites can thu ...
It has been assumed that the structure of a single inhibitor complex is sufficient to define the available subsites of an enzyme that has a unique binding site and a uniquely defined mode for ligand binding--the specificity for these subsites can thus be probed by kinetic experiments. Elastase is an enzyme for which these traditional assumptions, which underlie such structural and kinetic studies, do not hold. Three new crystal structures of elastase complexed to chemically similar inhibitors with similar binding affinities reveal a diversity of binding modes as well as two new subsites on elastase. The existence of multiple binding sites and different binding modes for such similar inhibitors indicates that researchers must proceed with caution when using kinetics to map out protein subsites.
Rosenstiel Basic Medical Sciences Research Center, Brandeis University, Waltham, Massachusetts 02254, USA.