custom Mex_5_PAS_UAAUAAA
Matches: UAAUAAA
Significance of differences:
p=4e-27 3' UTR
p=5e-11 50 bases upstrand from poly(A) site
p=5e-14 50 bases downstrand from stop codon
p=5e-01 500 bases upstrand from stop codon
p=4e-03 50 bases upstrand from start codon
