Table 1.

U3 hinge–ETS base pairing

The sequences involved in the wild-type or mutated interaction between the 5′-hinge (5′H) of U3 and region E2 of the ETS or between the 3′-hinge (3′H) of U3 and region E1 of the ETS are shown. Lower case letters depict the wild-type sequence, and capital letters indicate mutated bases. When the interaction was extended to involve flanking sequences, the positions of the U3 3′-hinge and of ETS region E1 are marked by horizontal lines. The arrow in panel (j) indicates the 8 bp shift in the U3–ETS interaction.