{HEAD ~ A GC nucleotide repeat region encodes} alternating {TAIL ~ prolines} and alanines from amino acids 467 480 
{ HEAD ~ A GC nucleotide repeat region encodes } alternating { TAIL ~ prolines } and alanines from amino acids 467 480
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH