* Highlight/select atoms in individual residues or secondary structures. * Selectively add hydrogen atoms to one or more residues, chains, helices or other defined structural entities. * Add hydrogen atoms to all atoms automatically or manually according to user preference. * Select the desired structure(s) from multi-structure files. GaussView 5 provides comprehensive support for importing and working with structures from PDB files: GaussView can also import many other popular structure exchange formats. GaussView 5 provides features for every phase of studying large molecular systems, from importing molecules from PDB files, through modifying structural features and setting up ONIOM calculations in Gaussian 09, to viewing and plotting the final results. We invite you to try the techniques described here with your own molecules. This brief introduction will give you a Quick Start to using GaussView 5 to investigate molecules and reactions with Gaussian 09. It also provides full support for all of the new modeling methods and features in Gaussian 09. GaussView 5 includes many new features designed to make working with large systems of chemical interest convenient and straightforward. With GaussView, you can import or build the molecular structures that interest you, set up, launch, monitor and control Gaussian calculations, and retrieve and view the results, all without ever leaving the application. GaussView is the most advanced and powerful graphical interface available for Gaussian.

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