Table 1.

RNA oligonucleotides. RNA substrates used in this study. The name, length, type of modification (if any) and sequence are indicated

#	Name	Length (nt)	Modification	Sequence
1	P10A	10	-	5′-CCGGGCGGCA-3′
2	P10C	10	-	5′-CCGGGCGGCC-3′
3	P10G	10	-	5′-CCGGGCGGCG-3′
4	P10U	10	-	5′-CCGGGCGGCU-3′
5	P10R	10	remdesivir	5′-CCGGGCGGCR-3′
6	P10A-2′d	10	2′-deoxy	5′-CCGGGCGGCA/2′d/-3′
7	P10A-3′d	10	3′-deoxy	5′-CCGGGCGGCA/3′d/-3′
8	P10A-3′P	10	3′-phosphate	5′-CCGGGCGGCA/3′P/-3′
9	PS110A	10	phosphorothioate	5′-CCGGGCGGC/s/A-3′
10	PS210A	10	phosphorothioate	5′-CCGGGCGG/s/CA-3′
11	PS310A	10	phosphorothioate	5′-CCGGGCG/s/GCA-3′
12	PS2,310A	10	phosphorothioate	5′-CCGGGCG/s/G/s/CA-3′
13	P10U-2′F	10	2′-fluoro	5′-CCGGGCGGCU/2′F/-3′
14	P10U-2′NH2	10	2′-amino	5′-CCGGGCGGCU/2′NH2/-3′
15	P10A-2′OMe	10	2′-O-methyl	5′-CCGGGCGGCA/2′OMe/-3′
16	P15	15	-	5′-AAGAAAGGAGGGAGG-3′
17	P25	25		5′-GGAAAGGGAAAGGGAAGGAGGAAGA-3′
18	P40	40	-	5′-GGAAAGGGAAAGGGAAGGAGGAAGAAAGAAAGGAGGGAGG-3′
19	P50	50	-	5′-GGAAAGGGAAAGGGAAGGAGGAAGAAAGAAAGGAGGGAGGCCGGGCGGCA-3′
20	T21	21	-	5′-CCCCCGAUGCCGCCCGGCCCC-3′
21	T57	57	-	5′-CCCCCGAUGCCGCCCGGCCUCCCUCCUUUCUUUCUUCCUCCUUCCCUUUCCCUUUCC-3′
22	P9	9	-	5′-CCGGGCGGC-3′
23	P8	8	-	5′-CCGGGCGG-3′
24	P7	7	-	5′-CCGGGCG-3′
25	P6	6	-	5′-CCGGGC-3′
26	P5	5	-	5′-CCGGG-3′
27	P4	4	-	5′-CCGG-3′
28	P3	3	-	5′-CCG-3′
29	P2	2	-	5′-CC-3′