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Table 1 Frequency (%) of PAS motifs reported by Beaudoing et al. in the 50 bp upstream of documented mRNA cleavage sites for 7000 human genes (2048 fly genes).

From: Similarities and differences of polyadenylation signals in human and fly

PAS motif

Human

Drosophila

PAS motif

Human

Drosophila

AAUAAA

46.73

47.76

AAUACA

1.75

2.86

AUUAAA

16.19

10.3

GAUAAA

1.64

0.62

UAUAAA

4.32

4.53

AAGAAA

1.02

0.31

AGUAAA

4.00

2.50

AAAAAG

0.96

0.21

UUUAAA

2.51

1.20

AAAACA

0.61

0.31

AAUAUA

2.38

5.05

AAUAGA

0.60

0.57

CAUAAA

2.32

1.30

none

14.96

22.48

  1. The variants with most different frequencies are underlined.