>1xkcB (B:) observed residues (from ATOM records) seveikfkikledflhtlntfnpefvryeeqedvyfevprpkllrirgvhnlkkyyltfk eildenneefyevefeigdfekavevfkrlgfkiqatikkkrwvyklngvtlevnrvegi gdfvdievisdspeeakekiwevakmlglkeedveprlylelinel