Table S1.
Table of mutants used in this study
| Template name | Sequence from +1 to +17 |
| λpR′ | AACGATGGGTTAATTCG |
| ConsλpR′ | TATAATGGGTTAATTCG |
| Cons16G | TATAATGGGTTAATTGG |
| Cons16U | TATAATGGGTTAATTTG |
| Cons16A | TATAATGGGTTAATTAG |
| ConsUE | Nontemplate strand: TATAATGGGTTAATTCG Template strand: ATATTATTCAATTAAGC |
| λpR′IE[CG] | AACGATGGGCCGGCCCG |
| ConsIE[CG] | TATAATGGGCCGGCCCG |
| 3X10 | AACGATGGGTTAGCCCG |
| 3X11 | AACGATGGGCTAACCCG |
| 3X12 | AACGATGGGCCAATCCG |
| 3X13 | AACGATGGGCCGATTCG |
| 2X10 | AACGATGGGTTGGCCCG |
| 2X11 | AACGATGGGCTAGCCCG |
| 2X12 | AACGATGGGCCAACCCG |
| 2X13 | AACGATGGGCCGATCCG |
| 2X14 | AACGATGGGCCGGTTCG |
| 1X10 | AACGATGGGTCGGCCCG |
| 1X11 | AACGATGGGCTGGCCCG |
| 1X12 | AACGATGGGCCAGCCCG |
| 1X13 | AACGATGGGCCGACCCG |
| 1X14 | AACGATGGGCCGGTCCG |
| 1X15 | AACGATGGGCCGGCTCG |
| 12GGC | AACGATGGGTTGGCTCG |
| Cons3x12 | TATAATGGGCCAATCCG |
| Cons2x13 | TATAATGGGCCGATCCG |
| Cons1x14 | TATAATGGGCCGGTCCG |
The sequence of positions +1 to +17 for all λpR′ mutants used in this study is shown. Mutations are underlined.