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Neighbour‐joining tree of a wide range of triterpene‐related P450 amino acid sequences. Note that the apple cytochrome P450 (CYP716A175) is close to the Medicago truncatula authenticated triterpene C‐28 oxidase (CYP716A12). The prefix is the GenBank or database identifier. The scale bar indicates 2 amino acid substitutions per site. P450s are clustered according to the P450 clan they belong to.
