Table 3.

Preferential conservation of uAUGs in human–mouse stop-codon-bounded 5′-UTR alignments (5′-UTR<stop set)

Trinucleotide	Triplet present in human, but not in mouse (%)	Triplet conserved in human and mouse (%)	Triplet present in mouse, but not in human (%)
AUG	9	84	7
AGU	17	69	14
GUA	20	62	18
GAU	17	70	13
UAG	15	70	15
UGA	16	72	12

Fishers's exact test: 255 conserved uAUGs, 49 non-conserved uAUGs, 1124 conserved AGU/GUA/GAU/UAG/UGAs, 491 non-conserved AGU/GUA/GAU/UAG/UGAs and P = 1.52 × 10⁻⁷.