SAN DIEGO--Molecular Simulations (MSI) here has received a two-year, $750,000 grant from the National Institutes of Health to develop an advanced biochemical modeling and analysis software program to simulate the three-dimensional structure and properties of a wide range of DNA and RNA systems. The grant will be used to pursue a joint effort with Molecular Engineering to develop a product known as the Nucleic Acid Workbench, which brings together both modeling and analysis tools for studying structure-function relationships in DNA and RNA.