In: Biology
Draw by hand a 3 pass transmembrane protein of your own creation (not a known one) through a plasma membrane. In your drawing clearly draw and label: The plasma membrane and the extracellular and cytosolic side The C and N terminus All the regions where you expect to find higher proportions of polar amino acids All the regions where you expect to find higher proportions of nonpolar amino acids.
Drawing of 3 pass transmembrane protein through plasma membrane is given in the following imageRegions are marked where higher proportion of polar and non- polar amino acids are mostly found . Plasma membrane, extracellular and cytosolic side, C terminus and N terminus are labelled also in the image. As the core region of plasma membrane is hydrophobic in nature (hydrophobic tails), those which portion of protein resides in this region contain non-polar amino acids. Whereas polar heads of plasma membrane and extracellular and cytosolic sides are hydrophilic in nature as well as aqueous environment ,therefore remaining portion of that protein contains polar amino acids.