>3cd4A (A:) observed residues (from ATOM records)
kkvvlgkkgdtveltctasqkksiqfhwknsnqikilgnqgsfltkgpsklndradsrrs
lwdqgnfpliiknlkiedsdtyicevedqkeevqllvfgltansdthllqgqsltltles
ppgsspsvqcrsprgkniqggktlsvsqlelqdsgtwtctvlqnqkkvefkidivvla