>2c57A (A:) observed residues (from ATOM records)
gsshhhhhhssshmkilviqgpnlnmlggmvtldqiheimqtfvkqgnldveleffqtnf
egeiidkiqesvgsdyegiiinpgafshtsiaiadaimlagkpvievhltniqareefrk
nsytgaacggvimgfgplgynmalmamvnilaemkafqeaqknn