>3so3B (B:) observed residues (from ATOM records)
eivltqspgtlslspgeratlscrasqsvsssylawyqqkpgqaprlliygastratgip
arfsgsgsgtdftltinslepedfavyycqqrsnwppgytfgqgtkveitrtvaapsvfi
fppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslss
tltlskadyekhkvyacevthqglsspvtksfnrge