Myosin-IIIb (MYO3B)

Probable actin-based motor with a protein kinase activity. Required for normal cochlear hair package development and hearing.

Plays an essential role in the early steps of cochlear hair bundle morphogenesis. Influences the lengths and number of stereocilia to be produced and limits the development of microvilli inside the forming auditory hair follicles thereby contributing to the architecture of the hair bundle, including its staircase pattern.