>1op3L (L:) observed residues (from ATOM records)
vvmtqspstlsasvgdtititcrasqsietwlawyqqkpgkapklliykastlktgvpsr
fsgsgsgteftltisglqfddfatyhcqhyagysatfgqgtrveikrtvaapsvfifpps
deqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstltl
skadyekhkvyacevthqglsspvtksfnrg