Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Enzymatic production of a protein or polypeptide
Reexamination Certificate
2004-05-26
2009-08-04
Qian, Celine X (Department: 1636)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Enzymatic production of a protein or polypeptide
C435S254200, C435S254210, C426S007000
Reexamination Certificate
active
07569360
ABSTRACT:
A yeast which harbors a mutant glutathione synthetase having one or both of mutations selected from the group consisting of a mutation to replace a threonine residue at the position 47 with an isoleucine residue and a mutation to replace a glycine residue at the 387-position with an aspartic acid residue and produces γ-glutamylcysteine. The yeast is cultured under suitable conditions, the resultant culture or fractionation product thereof or the resultant culture or fractionation product thereof that had been heat-treated is mixed with food or beverage materials and processed into foods or beverage to produce γ-glutamylcysteine- or cysteine-containing foods or beverage.
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Nishiuchi Hiroaki
Sugimoto Reiko
Ajinomoto Co. Inc.
Dunston Jennifer
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Qian Celine X
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