>2if0A (A:) observed residues (from ATOM records)
ydylikllalgdsgvgkttflyrytdnkfnpkfittvgidfrekrvvydafkvhlqlwdt
aglerfrslttaffrdamgfllmfdltsqqsflnvrnwmsqlqanaycenpdivlignka
dlpdqrevnerqarelaekygipyfetsaatgqnveksvetlldlimkrmekcv