iMol is a free molecular visualization application for Mac OS X operating system. The program is an indispensable tool for chemists and molecular biologists. iMol allows loading molecules using several file formats: PDB, XYZ, MOL2, HIN, CAR, ALC, BIO. The molecules can be saved as PDB, XYZ or BIO files. The BIO file stores all view and rendering settings (e.g. colors, lighting, orientation of molecules). iMol can easily handle both small and large molecules, it can load multiple molecules, move and rotate them independently.
The program can measure distances, angles, and torsional angles between atoms. Molecules can be superimposed and RMSD (Root Mean Square Deviation) between atoms coordinates can be calculated. Additionally, protein chains can be structurally aligned to detect regions of high structural similarity. iMol can load multimodel PDB files and display them as a dynamics trajectory.
iMol supports Quick Time movie format for rendering molecular dynamics trajectories and molecular animations. The movies are efficiently compressed for web applications.
