Molecules can be visualized with various types of styles, colors, depth and so forth. Below is a list of styles available for molecular visualization, which can include illustrations, multimedia, animation, and more. Every atom, groups of atoms, subdomains, domains, co-factors, ligands, solvent molecules and such can be visualized with any of the following styles.
Note - the molecules chosen are collagen (1BKV), hemoglobin (1HHO), and green fluorescent protein (1GFL)
Human oxyhaemoglobin (PDB 1HHO) is shown with one subunit ("chain") shown as a red-colored surface, another as a sage-colored cartoon, solvent atoms shown as light blue-colored space-filling dots, and the a heme group and the bound oxygen as a hybrid "ball and sticks", colored by standard atom colors (carbon - grey, oxygen - red, nitrogen - blue).