POLYAH - Recognition of 3'-end cleavage and polyadenilation region of human mRNA precursors
Algorithm predicts potential position of poly-A region by linear discriminant functions combining characteristics describing various contextual features of these sites. The default LDF threshold in the server is equal 0.
The accuracy has been estimated for the set of 131 poly-A regions and 1466 non-poly-A regions of human genes, having AATAAA sequence. For 86% accuracy poly-A region prediction the algorithm has 8% false predictions (Sp=50%; C=0.62). For example, with threshold 0.7 it predicts 8 of 9 poly-A sites of AD2 genome (35937 bp.) and overpredict 4 false (Compare with method of poly-A site prediction (CABIOS 1994,10,597-603), which for 8 true predicted sites gives 968 false positive sites).
HSG11C4A 1741 bp DNA PRI 21-FEB Length of sequence- 1741 1 potential polyA site was predicted Pos.: 988 LDF- 4.06
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