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Identification and Characterization of Two Bibenzyl Glycosyltransferases from the LiverwortMarchantia polymorpha.

Xiong, R.-L., et al. · 2022 · Antioxidants   research

doi:10.3390/antiox11040735   PMID:35453420   PMC9025568

Linked genes (2)  2 core 0 peripheral

Gene ID	Name	Evidence / Role	Function (this paper)
—	MpUGT737B1 missing	experimental subject	Bibenzyl glycosyltransferase cloned from M. polymorpha thallus cDNA, expressed in E. coli, and assayed in vitro; showed broad substrate promiscuity, glucosylating phloretin (major product phloretin-4-O-glucoside, Km 50.2 uM), dihydroresveratrol, lunularin and phenylpropanoids using UDP-glucose, and produced phloretin-4-O-glucoside in vivo. UV-induced (>2.5-fold), cytoplasm/nucleus localized; characterized as a stress-related bibenzyl UGT.
—	MpUGT741A1 missing	experimental subject	Bibenzyl glycosyltransferase cloned from M. polymorpha and expressed in E. coli; highly specific, glucosylating lunularin with UDP-glucose at ~100% conversion (Km 89.2 uM, kcat/Km 1481.6 M-1s-1). Docking showed a narrow active site fitting only small substrates like lunularin; UV-induced and cytoplasm/nucleus localized.