Happy new year to all users of ESTHER!! Activation Mechanism of Bacterial Thermoalkalophilic Lipases is published by Carrasco-Lopez et al. and structure (2W22) soon available. RifR - Type II thioesterase from Rifamycin NRPS/PKS biosynthetic pathway structures are published by Claxton et al. and available (3FLA, 3FLB)