Visualization of Trichoderma reesei Cellobiohydrolase I and Endoglucanase I on Aspen Cellulose by Using Monoclonal Antibody-Colloidal Gold Conjugates

R. A. Nieves, R. P. Ellis, R. J. Todd, T. J.A. Johnson, K. Grohmann, M. E. Himmel

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31 Scopus Citations

Abstract

Monoclonal antibodies (MAbs) specific for cellobiohydrolase I (CBH I) and endoglucanase I (EG I) were conjugated to 10- and 15-nm colloidal gold particles, respectively. The binding of CBH I and EG I was visualized by utilizing the MAb-colloidal gold probes. The visualization procedure involved immobilization of cellulose microfibrils on copper electron microscopy grids, incubation of the cellulose-coated grids with cellulase(s), binding of MAb-colloidal gold conjugates to cellulase(s), and visualization via transmission electron microscopy. CBH I was seen bound to apparent crystalline cellulose as well as apparent amorphous cellulose. EG I was seen bound extensively to apparent amorphous cellulose with minimal binding to crystalline cellulose.

Original languageAmerican English
Pages (from-to)3163-3170
Number of pages8
JournalApplied and Environmental Microbiology
Volume57
Issue number11
DOIs
StatePublished - 1991

NREL Publication Number

  • ACNR/JA-232-12726

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