>1yi2R (R:) observed residues (from ATOM records) gisysveadpdttakamlrerqmsfkhskaiareikgktageavdyleaviegdqpvpfk qhnsgvghkskvdgwdagrypekaskafldllenavgnadhqgfdgeamtikhvaahkvg eqqgrkpramgrasawnspqvdvelileep