Table 2. Hydrogen bonding interactions between BoGT6a and FAL. The distances given are the range observed in all four molecules of BoGT6a-FAL. Protein atom labels italicised are from a symmetry related molecule. Atom labels are as shown in Figure 2.

Protein Atom (BoGT6a)	Ligand Atom (2′-fucosyllactose)	Distance (Å)
	O5*	3.28–3.41
His 122 NE2	O4*	2.31–2.83
Lys 128 NZ	O2′	3.06–3.39
Thr 134 OG1	O6*	3.28–3.45
Trp 189 NE1	O6*	2.84–3.33
Glu 192 OE1	O4*	2.41–3.21
Glu 192 OE2	O4*	2.64–3.21
	O1′	2.56–3.46
Lys 128 NZ	O2′	3.27–3.39
	O5′	3.13–3.43
Glu 132 OE2	O6′	2.71–3.20