>4z5rR (R:) observed residues (from ATOM records)
diqmtqspsslsasvgdrvtitcrasqsvstssysymhwyqqkpgkapkvlisyasnles
gvpsrfsgsgsgtdftltisslqpedfatyycqhswgiprtfgqgtkveikrtvaapsvf
ifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstysls
stltlskadyekhkvyacevthqglsspvtksfnrge