Table 1.

Five-fold cross validation results and comparison with BLOSUM40

Loop length	Number of structures	BLOSUM40	RF
Very short (4–6 residues)	40	1.6	1.3
Short (7–9 residues)	117	3.0	1.7
Medium (10–11 residues)	114	3.2	2.0
Long (12–14 residues)	94	3.6	3.5
Very long (>17 residues)	24	5.8	4.3
Mean RMSD		3.3	2.7
Median RMSD		2.4	1.8

The values in columns 3 and 4 are the average backbone RMSD (in Å) between the target and the selected best template loop.