The P3Dscan output page for the crystal structure of the H-ras oncogene protein p21 (PDB 5P21). The table reports the list of matches between the query protein (probe) and the zone(s) collected in the database (target). SCOP and CATH annotation, when available, is reported for both the query structure and for each matching zone therefore the user can discriminate matches due to overall fold similarity from functionally interesting ones. The 3D zone (column 5) is linked to the corresponding Phospho3D database entry and the phospho-residue is explicitly reported in column 6. The score (column 9) corresponds to the number of paired residues in the match. The RMSD (column 10) is calculated on the matching amino acids. The pairs of residues participating in the match are reported in column 11. Upper right inset: graphical display (Jmol) of the probe and target structures. Residues participating in the match are in stick and the P-site is colored in orange. Bottom inset: tabular view: structural information at the residue level is reported for both the probe (user query structure) and target (3D zone) residues involved in the match.