One of two type I myosin motors%3B contains proline-rich tail homology 2 (TH2) and SH3 domains%3B MYO5 deletion has little effect on growth%2C but myo3 myo5 double deletion causes severe defects in growth and actin cytoskeleton organization%3B MYO5 has a paralog%2C MYO3%2C that arose from the whole genome duplication