Phytase expression systems and methods of making and using them

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Hydrolase

Reexamination Certificate

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C435S320100, C435S069100, C435S019000, C435S252300, C435S325000, C435S410000, C435S411000, C435S412000, C435S414000, C435S415000, C435S416000, C435S417000, C435S021000, C435S195000, C536S023200, C536S023700

Reexamination Certificate

active

09777566

ABSTRACT:
The invention provides a purified or recombinant phytase enzyme (SEQ ID NO:2) initially derived fromEscherichia coliB. The enzyme has a molecular weight of about 47.1 kilodaltons and has phytase activity (SEQ ID NO:2). The enzyme can be produced from native or recombinant host cells and can be used to aid in the digestion of phytate where desired. In particular, the phytase of the present invention can be used in foodstuffs to improve the feeding value of phytate rich ingredients.

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