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Thermostable purified endoglucanas from acidothermus cellulolyticus ATCC 43068

United States Patent

*** EXPIRED ***
5,275,944
January 4, 1994
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Cellulase Enzymes for the Conversion of Biomass to Biofuels and Chemicals
A purified low molecular weight cellulase endoglucanase I having a molecular weight of between about 57,420 to about 74,580 daltons from Acidothermus cellulolyticus (ATCC 43068). The cellulase is water soluble, possesses both C.sub.1 and C.sub.x types of enzyme activity, a high degree of stability toward heat, and exhibits optimum temperature activity at about 83.degree. C. at pH's from about 2 to about 9, and in inactivation temperature of about 110.degree. C. at pH's from about 2 to about 9.
Himmel; Michael E. (Littleton, CO), Adney; William S. (Golden, CO), Tucker; Melvin P. (Lakewood, CO), Grohmann; Karel (Winter Haven, FL)
Midwest Research Institute (Kansas City, MO)
07/ 826,089
January 27, 1992
The United States Government has rights in this invention pursuant to Contract No. DE-AC02-83CHI0093 between the United States Department of Energy and the Midwest Research Institute.