The impact of crystallization conditions on structure-based drug design: a case study on the Methylene Blue/Acetylcholinesterase complex is published by Dym et al. and structures are available (5E4T, 5DPL, 5E2I, 5E4J). Structure of a new cold-active and salt-tolerant esterase from the marine bacterium Thalassospira sp.is published by De Santi et al. and is available (4V2I)