Xylase isomerase purified from Thermotoga maritima and Thermotog

Details Xylase isomerase purified from Thermotoga maritima and Thermotog Xylase isomerase purified from Thermotoga maritima and Thermotog

1990-10-19

1993-06-15

Naff, David M.

Chemistry: molecular biology and microbiology

Enzyme , proenzyme; compositions thereof; process for...

Isomerase

435234, 435822, C12N 990, C12N 992, C12N 100

Patent

active

052197514

ABSTRACT:
This invention is in the field of glucose isomerization enzymes. More specifically, the invention is directed to a novel xylose isomerase, a process for the preparation of this enzyme, the use of this enzyme in glucose isomerization processes, and glucose isomerization processes. The enzyme is preferably derived from Thermotoga maritima or Thermotoga neapolitana. The enzyme has a temperature optimum above 90.degree. C., pH optimum in the range of from 6 to 7 and a residual activity at 90.degree. C. of more than 40% after 30 minutes and/or residual activity at 98.degree. C. of more than 20% after 30 minutes. The enzyme can also be in immobilized form.

REFERENCES:
patent: 3868304 (1975-02-01), Messing
patent: 3941655 (1976-03-01), Heady et al.
patent: 4593001 (1986-06-01), Hovwath
patent: 4687742 (1987-08-01), Skoet et al.
patent: 5041378 (1991-08-01), Drummond et al.

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