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. 2021 Jun 11;12:673337. doi: 10.3389/fpls.2021.673337

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Copyright © 2021 Liu, Xia, Jiang, Shen and Pang.

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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Identification of the enzymatic product of the recombinant LaPT2 protein by high-performance liquid chromatography (HPLC), ultra-performance liquid chromatography (UPLC)/mass spectrometer (UPLC/MS), and UPLC/MS/MS analyses. (A) Representative HPLC chromatographs of the enzymatic reactions containing kaempferol (Ka), dimethylallyl pyrophosphate (DMAPP), and a microsomal fraction of yeast expressing LaPT2 (left), control reaction (middle), and the 8-prenylkaempferol standard (right). (B,C) UV chromatograph (left), mass spectrum (middle), and MS/MS spectrum (right) of the enzymatic product (B) and the standard (C), respectively. (D) Chemical structures of kaempferol substrate and product catalyzed by the recombinant LaPT2 protein.