Reaction kinetics of protease with substrate phage

Kinetic model developed using stromelysin

Nikolai A. Sharkov, Robyn M. Davis, John F. Reidhaar-Olson, Marc Navre, Danying Cai

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Peptide libraries generated using phage display have been widely applied to proteolytic enzymes for substrate selection and optimization, but the reaction kinetics between the enzyme and substrate phage are not well understood. Using a quantitative ELISA assay to monitor the disappearance of substrate, we have been able to follow the course of reaction between stromelysin, a metalloprotease, and its substrate phage. We found that under the proteolytic conditions where the enzyme was present in nanomolar concentration or higher, in excess over the substrate, the proteolysis of substrate phage was a single exponential event and the observed rate linear with respect to enzyme concentration. The enzyme concentration dependence could be described by pseudo first-order kinetic equations. Our data suggest that substrate binding is slow relative to the subsequent hydrolysis step, implying that the phage display selection process enriches clones that have high binding affinity to the protease, and the selection may not discriminate those of different chemical reactivity toward the enzyme. Considering that multiple substrate molecules may be present on a single phage particle, we regard the substrate phage reaction kinetic model as empirical. The validity of the model was ascertained when we successfully applied it to determine the binding affinity of a competitive inhibitor of stromelysin.

Original languageEnglish (US)
Pages (from-to)10788-10793
Number of pages6
JournalJournal of Biological Chemistry
Volume276
Issue number14
DOIs
StatePublished - Apr 6 2001
Externally publishedYes

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Matrix Metalloproteinase 3
Bacteriophages
Reaction kinetics
Peptide Hydrolases
Kinetics
Substrates
Enzymes
Peptide Library
Matrix Metalloproteinase Inhibitors
Display devices
Proteolysis
Metalloproteases
Chemical reactivity
Hydrolysis
Clone Cells
Enzyme-Linked Immunosorbent Assay
Assays
Molecules

ASJC Scopus subject areas

  • Biochemistry

Cite this

Sharkov, N. A., Davis, R. M., Reidhaar-Olson, J. F., Navre, M., & Cai, D. (2001). Reaction kinetics of protease with substrate phage: Kinetic model developed using stromelysin. Journal of Biological Chemistry, 276(14), 10788-10793. https://doi.org/10.1074/jbc.M011772200

Reaction kinetics of protease with substrate phage : Kinetic model developed using stromelysin. / Sharkov, Nikolai A.; Davis, Robyn M.; Reidhaar-Olson, John F.; Navre, Marc; Cai, Danying.

In: Journal of Biological Chemistry, Vol. 276, No. 14, 06.04.2001, p. 10788-10793.

Research output: Contribution to journalArticle

Sharkov, NA, Davis, RM, Reidhaar-Olson, JF, Navre, M & Cai, D 2001, 'Reaction kinetics of protease with substrate phage: Kinetic model developed using stromelysin', Journal of Biological Chemistry, vol. 276, no. 14, pp. 10788-10793. https://doi.org/10.1074/jbc.M011772200
Sharkov, Nikolai A. ; Davis, Robyn M. ; Reidhaar-Olson, John F. ; Navre, Marc ; Cai, Danying. / Reaction kinetics of protease with substrate phage : Kinetic model developed using stromelysin. In: Journal of Biological Chemistry. 2001 ; Vol. 276, No. 14. pp. 10788-10793.
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