The present invention relates to a heterologous exo-endo cellulase fusion construct, which encodes a fusion protein having cellulolytic activity comprising a catalytic domain derived from a fungal exo-cellobiohydrolase and a catalytic domain derived from an endoglucanase. The invention also relates to vectors and fungal host cells comprising the heterologous exo-endo cellulase fusion construct as well as methods for producing a cellulase fusion protein and enzymatic cellulase compositions.
SPONSORED RESEARCH AND DEVELOPMENT
 Portions of this work were funded by Subcontract No. ZC0-0-30017-01 with the National Renewable Energy Laboratory under Prime Contract No. DE-AC36-99G010337 with the United States Department of Energy. Accordingly, the United States Government may have certain rights in the invention.