ZQ25

What Forces are at Work Here? Tom McKeag

Three types of filaments that make up the cytoskeleton: a microtubule (the largest), an intermediate filament (the knobby one), and two actin filaments (the smallest ones). The large blue molecules are ribosomes, busy in their task of synthesizing proteins. The large protein at bottom center is a proteasome. David S. Goodsell (2005) and RCSB PDB, CC-BY-4.0 Page 20 of 118