Fig. 4From: A new buckwheat dihydroflavonol 4-reductase (DFR), with a unique substrate binding structure, has altered substrate specificityA phylogenetic tree of DFRs constructed by means of the neighbour-joining method. Full-length DFRs were analysed using the ClustalW software with 1000 bootstrap replicates. The accession number of each DFR is provided in the Materials and Methods sectionBack to article page