6-phosphogluconolactonase stable, process for their preparation, and use of the enzyme.

The invention is a new FOSFOGLUCOLACTONASE-6 having a enzyme activity at least 90% versus the activity out after approximately 20 hours of PH 7.0 and 20 C. In addition, describes a method for obtaining ENZYME DE LEUCONOCTOC. Preferably ENZYME TO DETERMINE PROPER OR PARTNERS ATP reaction is carried in FOSFOGLUCONOLACTON-6.