>4b6rA (A:) observed residues (from ATOM records)
mkilviqgpnlnmlghrdprlygmvtldqiheimqtfvkqgnldveleffqtnfegeiid
kiqesvgsdyegiiinpgafshtsiaiadaimlagkpvievhltniqareefrknsytga
acggvimgfgplgynmalmamvnilaemkafqeaqkn