>1xkcA (A:) observed residues (from ATOM records) seveikfkikledflhtlntfnpefvryeeqedvyfevprpkllrirgvhnlkkyyltfk eildenneefyevefeigdfekavevfkrlgfkiqatikkkrwvyklngvtlevnrvegi gdfvdievisdspeeakekiwevakmlglkeedveprlyleli