Abuur nooc ka sii adag weedhan Actin waa borotiin kubbadeed (~ 43 kDa) kaas oo polymerizes si uu u sameeyo qaab dhismeed filament ah oo leh laba actin protofilaments oo isku duuban.
Dabcan, nooc ka sii adag jumlada ayaa ah "Actin waa borotiin kubbadeed (~ 43 kDa) kaas oo polymerizes oo u sameeya qaab dhismeed filament ah oo leh laba protofilaments oo isku duuban, si ay u sameeyaan hal 'filament actin' (oo hore loogu yeeri jiray'microfilament'). "