What are the three principal types of cytoskeleton filaments?
microtubules, actin filaments, and intermediate filaments
Complex cells require the coordinated assembly of:
Microtubules, neurofilaments, action filaments, and action of dozens of highly specilized molecular motors that transport subcellular components to their appropriate destinationd
latrunulin
actin-specific drug that binds subunits and prevents their polymerization
what is ARP complex
actin subunit that nucleates assembly to form a web and remains associated with the minus end
microtubule filament that stabilizes plus ends and accelerates assembly
XMAP215
the ratio kon/koff and Cc must be the same at both ends for a simple polymerization reaction (no ATP or GTP hydrolysis).
true
function of the myosin-actin system of the sarcomere
powers the contraction of various types of muscle such as skeletal, smooth, and cardiac muscle
How does the cell coordinate cytoskeletal actions?
protrusion at the leading edge( assembly of new actin filaments) and adhesion of newly protruded part to substratum signals forces generated by molecular motors to bring the cell body forward
the plus end is the slow-growing end
false
what are the tissue-specific forrms of intermediat filaments found in the cytoplasm of animal cells?
keratin filaments in epithelial cells, neurofilaments in nerve cells, and desmin filaments in muscle cells.
