>4cz2A (A:) observed residues (from ATOM records)
rehlfkvlvigelgvgktsiikryvhqlfsqhyratigvdfalkvlnwdsrtlvrlqlwd
iaglerfgnmtrvyykeamgafvvfdisrsstfeavlkwksdldskvhlpngspipavll
ankcdqnmspsqmdqfckehgfagwfetsakdninieeaarflvekmlvnhq