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Linear alignment of the deduced amino acid sequences of the β-diox from Drosophila compared with its vertebrate homologues from chicken (20) and human (GenBank accession no. AF294900) and to the plant epoxy-carotenoid cleaving enzyme (VP14) from maize (17). Identity of the amino acids in all four amino acid sequences is indicated in black, and identities in at least two amino acid sequences are indicated in dark gray.
