Steric and dynamic parameters influencing in situ cycloadditions to form triazole inhibitors with crystalline acetylcholinesterase are published by Bourne et al. and structures will be available soon. Structure of a new cold- active and salt tolerant esterase from the marine bacterium Thalassospira sp (4V2I) is available and will soon be published by Santi et al. Crystal and molecular structure of hexagonal form of lipase B from Candida antarctica is published by Strzelczyk et al. and structure (4ZV7) is available. Structures and Activity of Glycosylated and Aglycosylated Human Carboxylesterase 1 are available (5A7F, 5A7G, 5A7G) and published by Arena de Souza et al.