TLC analysis of HypBA1 reaction products. Substrates were incubated either without (lane a) or with (lane b) HypBA1 at 37 °C for 16 h. Ara-Hyp (lane 2), Ara2-Hyp (lane 3), Ara3-Hyp (lane 4), Ara4-Hyp (lane 5), pNP-α-l-arabinopyranoside (lane 7), pNP-α-l-arabinofuranoside (lane 8), pNP-β-l-arabinopyranoside (lane 9), and Ara2-Me (lane 10) were used as substrates. Lanes 1 and 6, l-arabinose standard.