The present invention relates to a process for preparing a protein which has an enzymatic activity for converting ~-carotene into zeaxanthin or canthaxanthin into astaxanthin and comprising the amino acid sequence SEQ ill NO.2 or a sequence derived from this sequence by substitution, insertion or deletion of amino acids as described in the sequence listing and having a homology of at least 50 % at the amino acid level with the sequence SEQ ill NO.2, by gene expression of the appropriate nucleic acid which encodes the said protein, in a known manner and to processes for preparing xanthophyll derivatives.
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机译:本发明涉及一种蛋白质的制备方法,该蛋白质具有将β-胡萝卜素转化为玉米黄质或将角黄素转化为虾青素的酶活性,并包含氨基酸序列SEQ ID NO.2或通过取代,插入或衍生自该序列的序列。通过已知编码所述蛋白质的合适核酸的基因表达,如序列表中所述缺失氨基酸,并在氨基酸水平上与SEQ ill NO.2具有至少50%的同源性叶黄素衍生物的制备方法和方法。
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