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. 2013 Jun 10;288(29):21015–21028. doi: 10.1074/jbc.M113.479147

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© 2013 by The American Society for Biochemistry and Molecular Biology, Inc.

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FIGURE 2. — Reappraisal of the Lewis-type activity of C. elegans FUT-6. Previous data indicated that FUT-6 can generate Galβ1,4(Fucα1,3)GlcNAc (Le^X) and GalNAcβ1,4(Fucα1,3)GlcNAc (Le^X-like; LDNF) epitopes. As shown here, FUT-6 is capable of introducing up to two fucoses on both antennae of the dabsylated GalGal (A) and βGNβGN (B) glycopeptides as judged by the increased molecular weight of products on MALDI-TOF MS spectra, whereas fucosylation (C) of pyridylaminated Galβ1,4GlcNAcβ1,3Galβ1,4Glc (lacto-N-neotetraose; LNnT) resulted in an earlier eluting product (lacto-N-fucopentaose III; LNFP) on isocratic reversed phase HPLC. Red triangles, fucose; yellow circles, galactose; blue squares, N-acetylglucosamine; green circles, mannose.