Cytoskeleton and membrane. Artwork showing the various structures associated with the cytoskeleton,the protein scaffolding found within cells. The cell membrane is the layered structure (orange and yellow). Other structures include: a glycoprotein (green,upper left),a microtubule (cylindrical,lower left),actin microfilaments (green chains,lower right),membrane proteins (within membrane itself; red,blue and purple),motor proteins (pink,next to microtubules),and proteoglycans (blue and yellow strand,upper centre). The proteoglycans are part of the extracellular matrix. The cytoskeleton plays a vital role in transport within the cell |