The present invention relates to a method of producing a heterologous protein or polypeptide having phytase activity in a yeast system. The invention also provides proteins having phytase activity which have increased thermostability. Yeast strains which produce a heterologous phytase and the vectors used to produce the phytase are also provided.


< Down-regulation and silencing of allergen genes in transgenic peanut seeds

< Polypeptide variants with altered effector function

> Method for the cellular high-throughput-detection of receptor ligand interactions

> Plant desaturases compositions and uses

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