Figure 2.

Seqence alignment of subdomains of mistletoe lectin I B-chain (MLB), ricin B-chain (RTB) and ebulin B-chain (EBB). Galactose-binding residues in subdomains α1 and γ2 are marked in red. The aromatic side chains of the galactose-binding sites are coloured green. Amino acids of the potential third galactose-binding site are shown in orange and the aromatic side chain is shown in light green. Amino acids that build up the hydrophobic centre stabilizing the β-trefoil are marked in magenta. The sequence numbering refers to MLB.