Applied Biochemistry and Biotechnology

, Volume 161, Issue 1–8, pp 313–317

Determination of Product Inhibition of CBH1, CBH2, and EG1 Using a Novel Cellulase Activity Assay

  • Faye Du
  • Erin Wolger
  • Louise Wallace
  • Amy Liu
  • Thijs Kaper
  • Brad Kelemen
Article

DOI: 10.1007/s12010-009-8796-4

Cite this article as:
Du, F., Wolger, E., Wallace, L. et al. Appl Biochem Biotechnol (2010) 161: 313. doi:10.1007/s12010-009-8796-4

Abstract

The hydrolysis of lignocellulosic biomass by degrading enzymes (cellulases) has emerged as a promising process within the bio-ethanol industry. Yet, understanding all the intricacies of how these enzymes work has been a challenging task. Substrate–enzyme interaction in complex feed mixtures, the recalcitrance of the crystalline structure of cellulose and enzyme inactivation by product inhibition, nonproductive binding to lignin, and process stress are only some of the problems standing in the way of creating an effective and efficient process to bio-ethanol production. This study focuses on the product inhibition of cellobiohydrolases and endoglucanases. Here, we present a method of studying product inhibition by measuring the decrease in substrate, utilizing the fluorescent properties of a calcofluor dye.

Keywords

Calcofluor cellulase assay Product inhibition 

Copyright information

© Humana Press 2009

Authors and Affiliations

  • Faye Du
    • 1
  • Erin Wolger
    • 1
  • Louise Wallace
    • 1
  • Amy Liu
    • 1
  • Thijs Kaper
    • 1
  • Brad Kelemen
    • 1
  1. 1.Genencor, a Danisco DivisionPalo AltoUSA

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