Protein Subunits in Cytoskeletal Filaments

PROTEIN SUBUNITS IN CYTOSKELETAL FILAMENTS

Microfilaments

Actin

-Fungi, plant, animal

-Structural support, motility

MreB

-Rod-shaped bacteria

-Width control

Microtubules

Tubulin (alpha and beta)

-Fungi, plant, animal

-Structural support, motility, cell polarity

FtsZ

-Bacteria

-Cell division

Intermediate Filaments

Lamins

-Plant, animal

-Support for nuclear membrane

Desmin, keratin, vimentin, others

-Animal

-Cell adhesion