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Since the publication of this article, the authors have noticed the following errors:
1. Figure 1 was published with incorrect names and ambiguous stereochemistry for compounds 1 and 1a. The correct names of compound 1 and compound 1a have been revised to (−)-Astrapterocarpan and (−)-Astrapterocarpan-3-O-glucoside, respectively. The correct stereochemical configurations have been added to compounds 1 and 1a.
Figure 1.
Functional characterization of AmGT28 and AmGT44. (a) Glycosylation of 1 by recombinant AmGT28/AmGT44 to produce 1a using UDP-Glc as the sugar donor. (b) UHPLC/UV chromatograms of the enzymatic reaction mixture. Control, reactions conducted using boiled protein; STD, reference standard. (c) MS and MS/MS spectra of 1a in the positive ion mode from the reaction catalyzed by AmGT28.
2. The following text also mentions the name of 1 or 1a and should be corrected accordingly:
Page no. on original PDF proof Line Original text Corrected text 1 (Abstract) 3 medicarpin (1) (−)-astrapterocarpan (1) 1 (Abstract) 3 medicarpin 3-O-glucoside (1a) (−)-astrapterocarpan 3-O-glucoside (1a) 3 Left, 21 medicarpin (1) (−)-astrapterocarpan (1) 3 Left, 24 medicarpin (1) (−)-astrapterocarpan (1) 3 Left, 27 medicarpin 3-O-glucoside (1a) (−)-astrapterocarpan 3-O-glucoside (1a) 3. Figure 2 was published with incorrect structures of the compound 3 and ambiguous stereochemistry for compounds 1−3. Corrections have been applied to the structure of compound 3. The correct stereochemical configurations have been added to compounds 1−3.
Figure 2.
Substrate specificity of AmGT28 and AmGT44. (a), (b) Conversion rates (%) of glycosylated products for substrates 1−15, using UDP-Glc as the sugar donor (n = 3). *, Products identified by comparing with reference standards; Δ, product purified from scaled-up reactions and characterized by NMR. (c) Structures of substrates 1−15.
4.
Supplementary Fig. S3 andS13 were published with incorrect structures. The structures of compounds 3, 3a, 13, and 13a have now been corrected and available online.5.
Supplementary Table S4 was published with incorrect data due to the wrong input of the structures. The partition coefficient of compound 8 has now been corrected and available online.The authors would like to apologize for these errors.
The original article has been corrected in the HTML and PDF versions.
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- Copyright: © 2025 by the author(s). Published by Maximum Academic Press, Fayetteville, GA. This article is an open access article distributed under Creative Commons Attribution License (CC BY 4.0), visit https://creativecommons.org/licenses/by/4.0/.
Gao BH, Zhang M, Chen K, Wang LL, Yao MJ, et al. 2025. Author Correction: Characterization of two pterocarpan glycosyltransferases in Astragalus membranaceus and their application in whole-cell biocatalysis. Medicinal Plant Biology 4: e041 doi: 10.48130/mpb-0025-0043
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