>4niaM (M:) observed residues (from ATOM records)
nsnvvtmiragsypkvnptptwvraipfevsvqsgiafkvpvgslfsanfrtdsftsvtv
msvrawtqltppvneysfvrlkplfktgdsteefegrasnintrasvgyriptnlrqntv
aadnvcevrsncrqvalvisccfn