| Strain | Pseudomonas mendocina NK-01 |
| GI | 330503848 |
| Locus Tag | MDS_2934 |
| Description | pyrroloquinoline quinone biosynthesis protein PqqC |
| Strain | Pseudomonas stutzeri DSM 4166 |
| GI | 386020715 |
| Locus Tag | PSTAA_2106 |
| Description | pyrroloquinoline quinone biosynthesis protein PqqC |
| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28867740 |
| Locus Tag | PSPTO_0511 |
| Description | coenzyme PQQ synthesis protein C |