Actin monomer is actin and it's also the thinnest filament. The location is beneath the plasma membrane which is highly concentrated at the cell cortex. The function is responsible for cellular shape and contractility.
Microtubules monomer is tubulin and is the thickest filament. The location is adjacent to the nucleus. The function is to organize cellular architecture and transport, and beating of the cilia and flagella.
Intermediate filaments monomer is intermediate filament proteins and is an intermediate filament which means it's in between actin and microtubules. The location is the cytoplasm and also surrounds the nucleus to the plasma membrane. The function is to provide mechanical strength, stretch without rupture.
GTP/GDP binding
Results in a lower frequency of microtubule catastrophe.
Microtubule lengthening and shrinking
Determined by the rate of tubulin addition relative to the rate of GTP hydrolysis.
Dynein and kinesin roles
Is in the intracellular cargo transport, cell locomotion, and division.
Actin and ATP role
Both form G-actin which are competent for polymerization.
ARP complex and capping of actin
Inhibits pointed-end filament growth from gelsolin-actin dimers.
Myosin 1
Form the lateral arms that link actin bundles to the plasma membrane of intestinal microvilli.
Myosin 2
Organizing protrusive activity and the traction forces in migrating cells.
Muscle contraction and calcium ions
Causes a shift in the position of the troponin complex on actin filaments, which exposes myosin-binding sites.
Muscle contraction and ATP importance
Is the sole fuel for muscle contraction therefore ATP needs to energize the myosin head.
The power stroke of myosin 2 generates the force and motion that leads to muscle contraction. Myosin 2 slides the actin filaments relative to one another to cause muscle contraction.
