Commissariat a l'Energie Atomique et Aux Energies Alternatives (CEA) 2 articles published in JoVE Chemistry Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package Razvan Caracas1,2, Anais Kobsch1, Natalia V. Solomatova1, Zhi Li1, Francois Soubiran1,3, Jean-Alexis Hernandez1,2 1Ecole Normale Supérieure de Lyon, Laboratory of Geology of Lyon UMR5276, CNRS, 2Centre for Earth Evolution and Dynamics (CEED), University of Oslo, 3 Melts and fluids are ubiquitous vectors of mass transport in natural systems. We have developed an open-source package to analyze ab initio molecular-dynamics simulations of such systems. We compute structural (bonding, clusterization, chemical speciation), transport (diffusion, viscosity) and thermodynamic properties (vibrational spectrum). Biology High Throughput Quantitative Expression Screening and Purification Applied to Recombinant Disulfide-rich Venom Proteins Produced in E. coli Natalie J. Saez1, Hervé Nozach2, Marilyne Blemont1, Renaud Vincentelli1 1Architecture et Fonction des Macromolécules Biologiques (AFMB), Aix-Marseille Université, 2 A protocol for the quantitative, high throughput expression screening and analytical purification of fusion proteins from small-scale Escherichia coli cultures is described and applied to the expression of disulfide-rich animal venom protein targets.