Figure 2. Insertion points for myc-tags in arrestin

Amino acids between which the myc-tag was inserted are shown in space-filled representation. Positions where binding of the tagged arrestin could be competitively inhibited are shown space filled in red; positions where the competitive inhibition was weak are shown space filled in yellow; positions where there was no competitive inhibition of binding are shown space filled in blue. The position of 399myc is not shown since the C-terminus of arrestin is not resolved in the crystal structure.