SSMap: A new UniProt-PDB mapping resource for the curation of structural-related information in the UniProt/Swiss-Prot Knowledgebase

Table 5 Evaluation of non-identical alignments between SSMap and the three other resources.

	SIFTS	PDBSWS	DR PDB
Total number of non-identical alignments	49,199	61,043	(68,692)*
Comparison of length
Different lengths	8,463 [17%]	49,364 [81%]	NA
\| Length difference\| <= 5	7,004 (83%)	25,050 (51%)	NA
\| Length difference\| > 5	1,459 (17%)	24,314 (49%)	NA
Comparison of boundaries
Different boundaries	16,824 [34%]	50,362 [82%]	10,848
\| Boundaries diff Nterm\| <= 5	15,666	34,302	10,058
\| Boundaries diff Cterm\| <= 5	16,146	36,163	10,324
Boundaries diff Nterm < -5	473	978	363
Boundaries diff Nterm > 5	674	13,317	445
Boundaries diff Cterm < -5	431	11,752	273
Boundaries diff Cterm > 5	221	621	219

The difference in length was calculated by subtracting the alignment length of the compared resource from that of SSMap. Boundaries differences were computed similarly. The percentages between square brackets were computed relatively to the total number of non-identical alignments. The percentages between round brackets were computed relatively to the number of alignment pairs having a different length or different boundaries.
NB: *Since DR PDB did not provide alignment, the number indicated as reference was the total number of common (equivalent) mappings between SSMap and DR PDB.

ISSN: 1471-2105