Table 1.

Oligonucleotide Substrates Used in this Work^a

Abbreviation	Position
	−6	−5	−4	−3	−2	−1	+1	+2	+3	+4	+5
rSA5	C	C	C	U	C	U	A	A	A	A	A
−1r,dSA5	dC	dC	dC	dU	dC	U	dA	dA	dA	dA	dA
−3m,−1d,rSA5	C	C	C	mU	C	dU	A	A	A	A	A
−1d,rSA5	C	C	C	U	C	dU	A	A	A	A	A
−1d,rSA	C	C	C	U	C	dU	A
−5U,−1d,rSA	C	U	C	U	C	dU	A
−1d,rP	C	C	C	U	C	dU
−3m,−1d,rP	C	C	C	mU	C	dU
rP	C	C	C	U	C	U

^aUppercase letters represent RNA bases; m represents a 2′-methoxy moiety, and d represents a 2′-deoxy substitution.