Table 1 Ligand binding profile of clones (MG1, MN3, MU1, and MU3) identified by biopanning against mucin

From: New carbohydrate binding domains identified by phage display based functional metagenomic screens of human gut microbiota

Ligands tested in binding assays

Ligands bound by

MG1

MN3

MU1

MU3

Glycan Array (CFG glycan array version 5.3 comprising 600 natural and synthetic glycans)a

Asialo, long, complex N-glycans; terminal α1,2-Fuc

Asialo, short, complex N-glycans; terminal LacNAc; H, Lex, Ley antigens

Asialo, long, complex N-glycans; terminal LacNAc; H, Lex, Ley antigens

Sialo, short, complex N-glycans; terminal α2,6-Sia

ITC (LNnT, LNT, H type-2 pentaose, Fetuin, Asialofetuin, H type2 heptaose, Lea, difucohexaose, Leb, Lex, H type-2 trioseb, LNnOc, LNnHc, A type-2 tetraosec)

None

H type-2 pentaose

H type-2 pentaose

Fetuin

ELLA (PAA-Biotin and PAA-Biotin-linked α-D-Mannose, β-D-Mannose, α-Neu5Ac, α-L-Fucose, β-D-GlcNAc, α-D-Galactose, β-D-Galactose, Ley, H type-2 triose)

Not tested

PAA-Biotin-Ley, PAA-Biotin-H type-2 triose

Not tested

Not tested

  1. ITC Isothermal Calorimetry, ELLA Enzyme Linked Lectin Assay, LNnO Lacto-N-neooctaose, LNnH Lacto-N-neohexaose, LNnT Lacto-N-neotetraose, LNT Lacto-N-triaose, A type-2 tetraose A antigen type-2 tetraose, H type-2 pentaose H antigen type-2 pentaose-β-N-Acetyl Propargyl, H type-2 heptaose H antigen type-2 heptaose azido ethyl, Lea Lewis A tetraose, Difucohexaose Lacto-N-difucohexaose II, Leb Lewis B tetraose, Lex Lewis X tetraose.
  2. aGlycan array ligands represented are common motifs of glycans showing high binding intensity in the assay.
  3. bTested only with MN3.
  4. cTested only with MG1.