>2nq3A (A:) observed residues (from ATOM records) sltmksqlqitvisaklkenkwfgpspyvevtvdgqskktekcnntnspkwkqpltvivt pvsklhfrvwshqtlksdvllgtaaldiyetlksnnmkleevvvtlqlggdkeptetigd lsicldglqle