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. 2012 Nov 21;41(Database issue):D195–D202. doi: 10.1093/nar/gks1089

Table 1.

Basic statistics for sequences in each data source

Data source Total No. of sequences Median sequence length (bp) Average sequence length (bp)
TRANSFAC 23 199 24 26
JASPAR 24 692 204 207
Yale ChIP-Seq 96 381 454 656
HudsonAlpha ChIP-Seq 65 081 559 561
Parallel SELEX 19 535 16 16
All other datasets 2655 1000 687