Fig. 2From: Production of l-alanyl-l-glutamine by immobilized Pichia pastoris GS115 expressing α-amino acid ester acyltransferaseComparison of catalytic activity between GPA and GPAp to screen for the optimum Ala-Gln producer. GPA and GPAp were denoted in grey and orange, respectively. Samples at two time points were detected by HPLCBack to article page