Protein engineered nucleic acid fragments encoding a CrtO ketolase and a CrtZ hydroxylase are provided with increased astaxanthin synthesis activity. Methods using the present nucleic acid fragments are also provided for increasing or altering astaxanthin production in suitable production hosts.

 
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> Method for the production of 1,3-propanediol by recombinant organisms comprising genes for coenzyme B.sub.12 synthesis

> Pyridinyl amides and imides for use as fungicides
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