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