Figure 3

Structures of the alternative substrates. Structures of the substrates 5-bromo-4-chloro-3-indolyl-β-D-fucopyranoside (X-fucopyranoside), 5-bromo-4-chloro-3-indolyl-β-D-xylanopyranoside, (X-xylopyranoside) 5-bromo-4-chloro-3-indolyl-N-acetyl-β-D-glucosaminide (X-glucosaminide), 5-bromo-4-chloro-3-indolyl-N-acetyl-β-D-galactosaminide (X-galactosaminide) and 5-bromo-4-chloro-3-indolyl-β-D-glucopyranoside (X-glucopyranoside) used in the additional screening of the fourth round neutral drift libraries.