Monomeric Acanthamoeba myosins I support movement in vitro.

  title={Monomeric Acanthamoeba myosins I support movement in vitro.},
  author={Joseph P Albanesi and Hisao Fujisaki and John A Hammer and Edward D. Korn and Rebecca Jones and Michael P Sheetz},
  journal={The Journal of biological chemistry},
  volume={260 15},
Acanthamoeba myosins IA and IB were found to have molecular weights of 159,000 and 150,000 and Stokes radii of 6.2 and 5.9 nm, respectively. Both enzymes have frictional ratios of 1.7. Myosin IA consists of 22% alpha-helix, 32% beta-structure, and 46% unordered structure, while myosin IB is 16% alpha-helix, 46% beta-structure, and 38% unordered. Both myosins remain monomolecular under conditions in which other myosins form filaments. Beads coated with myosin IA or IB move unidirectionally on… CONTINUE READING