>4q4zB (B:) observed residues (from ATOM records)
ldsklkapvftvrtqgreygefvleplergfgvtlgnplrrillssipgtavtsvyiedv
lhefstipgvkedvveiilnlkelvvrflnpslqtvtlllkaegpkevkardflpvadve
imnpdlhiatleeggrlnmevrvdrgvgyvpaekhgikdrinaipvdavfspvrrvafqv
edtrlgqrtdldkltlriwtdgsvtplealnqaveilrehltyfsnp