>4al2A (A:) observed residues (from ATOM records)
svlqvlhipderlrkvakpveevnaeiqrivddmfetmyaeegiglaatqvdihqriivi
dvsenrderlvlinpelleksgetgieegclsipeqralvpraekvkiraldrdgkpfel
eadgllaiciqhemdhlvgklfmdylsplkqqrirqkvekld