Reassessment of the Acceptor Specificity and General Properties of the Lewis Blood-group Gene Associated Alpha-3/4-fucosyltransferase Purified from Human Milk
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Endocrinology
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The acceptor specificity and general properties of a Lewis blood-group gene associated alpha-3/4-L-fucosyltransferase isolated from human milk have been examined at the penultimate purification stage involving affinity chromatography on GDP-hexanolamine Sepharose, and after a subsequent gel filtration step on Sephacryl S-200. Both preparations transferred fucose to the O-4 position of N-acetylglucosamine in Type 1 (Gal beta 1-3GlcNAc-R) acceptors and the O-3 position of glucose in lactose-based (Gal beta 1-4Glc) oligosaccharides, and both used Type 1 sialylated compounds when the terminal N-acetylneuraminic acid was present in alpha-2,3 linkage. The striking difference between the two preparations was in their reactivity with Type 2 (Gal beta 1-4GlcNAc-R) chains; after Sephacryl S-200 chromatography the apparent KM values for the alpha-3/4- preparation with unsubstituted low-molecular-weight Type 2 oligosaccharides were considerably increased. Substitution of the terminal galactose with sialic acid in alpha-2,3 linkage decreased the KM values for low-molecular-weight oligosaccharides but no detectable incorporation of fucose was observed into N-acetyllactosamine end-groups of glycoproteins with N-linked oligosaccharide chains, irrespective of the presence of sialic acid in the terminal sequences.
McDonald A, Mariethoz J, Davey G, Lisacek F Sci Rep. 2022; 12(1):10846.
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Mank M, Hauner H, Heck A, Stahl B Anal Bioanal Chem. 2020; 412(25):6887-6907.
PMID: 32794008 PMC: 7496073. DOI: 10.1007/s00216-020-02819-x.
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Lageveen-Kammeijer G, de Haan N, Mohaupt P, Wagt S, Filius M, Nouta J Nat Commun. 2019; 10(1):2137.
PMID: 31086181 PMC: 6513864. DOI: 10.1038/s41467-019-09910-7.
Sittel I, Galan M Org Biomol Chem. 2017; 15(17):3575-3579.
PMID: 28401975 PMC: 5708356. DOI: 10.1039/c7ob00550d.
Histo-blood group glycans in the context of personalized medicine.
Dotz V, Wuhrer M Biochim Biophys Acta. 2016; 1860(8):1596-607.
PMID: 26748235 PMC: 7117023. DOI: 10.1016/j.bbagen.2015.12.026.