One of the most abundant
Myosin proteins in human cells. Myosin one is found in the form of a
monomer because its
heavy chain lacks
Myosin II and
Myosin 5's alpha-helical sequences) with a head that
binds
actin. The light chains (in the neck region) of Myosin I and
Myosin 5 are known as
calmodulin which allows myosin I, like all other Myosins, to be
calcium regulated. Function of mysoin I is similar to that of
Myosin 5.
A test called
filament sliding is often performed with Myosin I.