Table 1. Strains used in this study.
| Strain | Description | Reference or source |
| E. coli | ||
| DH5α | Competent cells for cloning | New England Biolabs |
| 1047/pRK2013 | Helper stain for conjugation | [76] |
| CC118λpir | Host strain for pKNG101 replication and donor strain for conjugation | [77] |
| S. oneidensis a | ||
| MR-1 | Wild-type | Laboratory collection |
| SLL01 | SO2364 deletion mutant/ΔccoN | This study |
| SLL02 | SO3286 deletion mutant/ΔcydA | This study |
| SLL03 | SO4607 deletion mutant/ΔcoxA | This study |
| SLL05 | SO4607 and SO3286 deletion mutant/ΔcoxAΔcydA | This study |
| SLL06 | SO4607 and SO2364 deletion mutant/ΔcoxAΔccoN | This study |
All S. oneidensis strains derived from the parental strain S. oneidensis MR-1.