Crystal structure of Lecithin:cholesterol acyltransferase (LCAT) in a closed conformation is available (5TXF) and the retractable lid in lecithin:cholesterol acyltransferase is published by Manthei et al. Structure of Proline iminopeptidase from psychrophilic yeast Glaciozyma antarctica is available (5YHP) and will be soon published by Kamaruddin, Rodzli et al. Development of amide-based fluorescent probes for selective measurement of carboxylesterase 1 activity in tissue extracts is published by Kodani et al. Unique binding mode of Evogliptin with human dipeptidyl peptidase IV is published by Lee et al. and structures will be available soon (5Y7H, 5Y7J, 5Y7K) Acetylcholine and the components of the human cholinergic system in a primitive unicellular eukaryote Acanthamoeba spp. are described by Baig et al..