Molecule World

Molecule World 5.0 brings sequence, structure, prediction, and comparison together in a molecular workspace for exploring proteins, DNA, and RNA. Explore experimentally determined structures alongside computationally generated models, including structures predicted from sequence. Compare normal and mutant proteins, examine alternative conformations, and investigate how sequence changes affect 3D structure. Molecule World Pro on iPad adds tools for creating reusable molecular explorations. Select residues by sequence, variant, range, motif, neighborhood, or binding interface. Style and color what matters, hide what does not, and save the result as a named scene. Superimpose structures into model sets and compare their alignment, both overall and by chain. Package structures, scenes, and descriptions into collections that can be shared with students or colleagues. The free Molecule World viewer on iPhone now opens these Pro-created collections, scenes, and model sets. Explore molecular structures on iPhone, including superimposed models and saved views created on iPad. SEQUENCE + STRUCTURE The sequence viewer connects aligned sequences directly to the 3D structure. Compare copies of a molecule, examine mutations, and read aligned models down the same residue columns. SCENES Save a molecular view—including selections, styles, and camera position—inside the structure file. Step through scenes to guide an exploration or presentation. MODEL SETS Superimpose up to 20 structures and compare how closely they align, both overall and by chain. Compare experimental structures, predicted models, variants, or alternative conformations in the same workspace. COLLECTIONS Package related structures into a single file with descriptions and an ordered sequence of models and scenes. Hide selected structures for exercises and optionally lock the collection for distribution. FREE ON EVERY DEVICE Everything created with Pro opens in the free Molecule World viewer on iPhone, iPad, and Mac. Students and colleagues can explore collections, step through scenes and model sets, change views, and capture high-resolution images without needing Pro. Molecule World 5.0 makes it easier to explore how sequence, structure, and function are connected—from individual structures to collections of models and guided molecular experiences. 5.0.1: Fixes for selections, locks and scenes in model sets; rebuilding a set on a new anchor chain; shared scene cameras framed for your screen; model and lock swatches in the color key; scenes listed and reorderable under All. 5.0.2: Fixes crashes with very large biological assemblies. Structures too big for the device’s memory now open as a Cα/P backbone. 5.0.3: Fixes an issue with loading NMR ensembles, obtained from the PDB, that failed to load. 5.0.4: On iPhone and iPad, opening very large structures one after another no longer runs out of memory. Additional large structure performance Improvements and collections and scenes bug fixes.