title: Structure of a magnesium-induced polymer of calf brain microtubule protein.
mesh_terms: D001665:Binding Sites; D001923:Brain Chemistry; D046911:Macromolecular Substances; D008274:Magnesium; D008854:Microscopy, Electron; D008870:Microtubules / Q000032:analysis*; D009419:Nerve Tissue Proteins; D011485:Protein Binding; D011487:Protein Conformation; D014461:Ultracentrifugation
chemical_list: D046911:Macromolecular Substances; D009419:Nerve Tissue Proteins; D008274:Magnesium