Hydrolysis of arabino-oligosaccharides by Abn43B. The time-dependent degradation of arabinotriose (A) and arabinohexaose (B) by Abn43B was analyzed using HPAEC-PAD. Symbols: ●, arabinose; +, arabinobiose; △, arabinotriose; □, arabinotetraose; ×, arabinopetaose; ◇, arabinohexaose.