>2a69B (B:) observed residues (from ATOM records)
mldsklkapvftvrtqgreygefvleplergfgvtlgnplrrillssipgtavtsvyied
vlhefstipgvkedvveiilnlkelvvrflnpslqtvtlllkaegpkevkardflpvadv
eimnpdlhiatleeggrlnmevrvdrgvgyvpaekhgikdrinaipvdavfspvrrvafq
vedtrlgqrtdldkltlriwtdgsvtplealnqaveilrehltyfsnpq