>2y3nA (A:) observed residues (from ATOM records)
sgsvltaidndkvavgdkvtltinvdkitnfsgyqfnikynttylqpwdtiadeaytdst
mpdygtllqgrfnatdmskhnlsqgvlnfgrlymnlsayrasgkpestgavakvtfkvik
eipaegiklatfengssmnnavdgtmlfdwdgnmysssaykvvqpgliypkle