>5kc6A (A:) observed residues (from ATOM records)
sakvafsairstnhepsemsnrtmiiyfdqvlvnignnfdserstfiaprkgiysfnfhv
vkvynrqtiqvslmlngwpvisafagdqdvtreaasngvliqmekgdraylklergnlmg
gwkystfsgflvfplgt