mRNA WTS FOR EUKARYOTES SARGAN,GREGORY,BUTTERWORTH FEBS LET 147 133-136 1982
P  -7 -6 -5 -4 -3 -2 -1  1  2  3
  102102102102102102102102102102
T  19 24 31 12  0 18  5  0102  0
C  20 15 32 65  5 42 52  0  0  0
A  50 27 27 19 86 36 34102  0  0
G   6 29 12  6 11  6 11  0  0102
VIRAL ONLY
P  -7 -6 -5 -4 -3 -2 -1  1  2  3
   41 41 41 41 41 41 41 41 41 41
T  14 12 16  4  2 13  9  0 41  0
C   7  3 13 17  7  9 14  0  0  0
A  15 10  6 10 27 15  9 41  0  0
G   5 16  6 10  5  4  9  0  0 41
This paper puts forward the hypothesis that there is an interaction between
some mRNA leader sequences and a highly conserved structure in the 18S rRNA
of eukaryotic ribosomes. The attempt to substantiate the hypothesis includes
a table of base frequencies for sequences immediately 5' to start codons.
They examined 102 sequences and I have used the base frequencies they found
as a weight matrix for searching for eukaryotic gene starts. I don't yet 
know how good this method is. The viral sequences were found to be slightly
different but the separate table shown here is not used in the program.