Efficient motif search in ranked lists and applications to variable gap motifs.

Further search for 4-mers enriched around tyrosine phosphorylation sites yielded three highly significant motifs: DFGL ( P -value ≤ 5.1 × 10 −17 ), HRDL ( P -value ≤ 7.7 × 10 −17 ) and SDVW ( P -value ≤ 2.5 × 10 −16 ).

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