Polypeptide having beta-carotene hydroxylase activity and a polynucleotide conding it, and a method for preparing beta-carotene hydroxylase or beta-cryptoxanthin

摘要

A polypeptide which has beta -carotene hydroxylase activity comprises an amino acid sequence selected from: (i) the amino acid sequence of SEQ ID NO:2; (ii) an amino acid sequence which is at least 70% homologous to the amino acid sequence of SEQ ID NO:2; and (iii)a fragment of sequence (i) or (ii) which is not a said sequence (ii).