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. 2022 Jun 9;13:884957. doi: 10.3389/fpls.2022.884957

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Copyright © 2022 Wang, Wang, Wang, Yao and Niu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Phylogenetic and multiple alignment analyses of the deduced amino acid sequence of the SbDFR protein from Scutellaria baicalensis and other species. (A) Multiple alignment of the proteins from selected species. The NADPH binding domain and substrate specific binding domain are marked by the red box and red brace, respectively, and the site marked by the red arrow is the amino acid residue influencing enzyme substrate specificity. (B) Phylogenetic analysis of SbDFR proteins from S. baicalensis and other selected species.