Table 2.

Myosin distribution according to Foth et al. (1)

Myosin class	Anim.	Fungi	Dict.	Plants	Apic.	Kinet.
I	x	x	x			x
II	x	x	x
III	x
IV			*
V	x	x	?
VI	x		?		x
VII	x		?
VIII				x
IX	x
X	Vt
XI				x
XII	Ca
XIII				Ab
XIV					x
XV	x
XVI	Vt
XVII		As
XVIII	x
XIX	Ch
XX	In
XXI						x
XXII					x
XXIII					x
XIV					x

Additional unclassified sequences have been excluded. Breadth of distribution within a group is indicated either by “x” (wide) or a subgroup designation (distribution apparently limited to that subgroup). Anim., animals; Dict., Dictyostelium; Apic., apicomplexans; Kinet., kinetoplastids; Ab, Acetabularia; As, ascomycetes; Ca, Caenorhabditis; Ch, chordates; In, insects; Vt, vertebrates.

*Class IV myosin is found in the Dictyostelium relative Acanthamoeba.