Summary of structure prediction for the complete set of proteins encoded by 27 distinct MSY genes. The following classes together with the number and the percentage of encompassed amino acids are presented: 3D structure assigned with PDB-BLAST; 3D structure assigned with SMART/CDD; 3D structure assigned with Fold Recognition/ab initio methods; structured regions with clear secondary structure prediction patterns but not annotated at the 3D level (include separate domains as well as regions that possibly pack on the neighboring domains); transmembrane regions; unstructured nonglobular regions; and other, remaining regions encompassing segments <30 residues (mainly linkers between domains) and regions that could not be assigned with confidence to any of the former classes.