What are some possible practical experiments that would enable the understanding of composition, structure and/or functions of the protein preparations that were made (actin and myosin). How would these experiments apply to studying actin and myosin. I know that SDS-PAGE and Bradford Protein Assay could be used and I understand how they would apply to studying actin and myosin but what other procedures would also apply. I am not sure if these two could apply: 1. Proton NMR, Mass Spectroscopy, IR Spectroscopy 2. MRI Please help. Thank you in advance.