| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| PP_0375 | pqqB | PP_0375 | PP_0379 | Prolyl oligopeptidase family protein. | Coenzyme PQQ synthesis protein B; May be involved in the transport of PQQ or its precursor to the periplasm; Belongs to the PqqB family. | 0.928 |
| PP_0375 | pqqC | PP_0375 | PP_0378 | Prolyl oligopeptidase family protein. | Pyrroloquinoline-quinone synthase; Ring cyclization and eight-electron oxidation of 3a-(2-amino- 2-carboxyethyl)-4,5-dioxo-4,5,6,7,8,9-hexahydroquinoline-7,9- dicarboxylic-acid to PQQ. | 0.935 |
| PP_0375 | pqqD-I | PP_0375 | PP_0377 | Prolyl oligopeptidase family protein. | Coenzyme PQQ synthesis protein D; Functions as a PqqA binding protein and presents PqqA to PqqE, in the pyrroloquinoline quinone (PQQ) biosynthetic pathway. | 0.887 |
| PP_0375 | pqqD-II | PP_0375 | PP_2681 | Prolyl oligopeptidase family protein. | Coenzyme PQQ synthesis protein D; Functions as a PqqA binding protein and presents PqqA to PqqE, in the pyrroloquinoline quinone (PQQ) biosynthetic pathway. | 0.522 |
| PP_0375 | pqqE | PP_0375 | PP_0376 | Prolyl oligopeptidase family protein. | Coenzyme PQQ synthesis protein E; Catalyzes the cross-linking of a glutamate residue and a tyrosine residue in the PqqA protein as part of the biosynthesis of pyrroloquinoline quinone (PQQ). | 0.926 |
| PP_0375 | pqqF | PP_0375 | PP_0381 | Prolyl oligopeptidase family protein. | Coenzyme PQQ synthesis protein F; Required for coenzyme pyrroloquinoline quinone (PQQ) biosynthesis. It is thought that this protein is a protease that cleaves peptides bond in a small peptide (gene pqqA), providing the glutamate and tyrosine residues which are necessary for the synthesis of PQQ (By similarity). | 0.823 |
| PP_2667 | PP_2675 | PP_2667 | PP_2675 | ABC transporter. | Cytochrome c-type protein. | 0.789 |
| PP_2667 | pqqB | PP_2667 | PP_0379 | ABC transporter. | Coenzyme PQQ synthesis protein B; May be involved in the transport of PQQ or its precursor to the periplasm; Belongs to the PqqB family. | 0.736 |
| PP_2667 | pqqC | PP_2667 | PP_0378 | ABC transporter. | Pyrroloquinoline-quinone synthase; Ring cyclization and eight-electron oxidation of 3a-(2-amino- 2-carboxyethyl)-4,5-dioxo-4,5,6,7,8,9-hexahydroquinoline-7,9- dicarboxylic-acid to PQQ. | 0.729 |
| PP_2667 | pqqD-I | PP_2667 | PP_0377 | ABC transporter. | Coenzyme PQQ synthesis protein D; Functions as a PqqA binding protein and presents PqqA to PqqE, in the pyrroloquinoline quinone (PQQ) biosynthetic pathway. | 0.402 |
| PP_2667 | pqqD-II | PP_2667 | PP_2681 | ABC transporter. | Coenzyme PQQ synthesis protein D; Functions as a PqqA binding protein and presents PqqA to PqqE, in the pyrroloquinoline quinone (PQQ) biosynthetic pathway. | 0.453 |
| PP_2667 | pqqE | PP_2667 | PP_0376 | ABC transporter. | Coenzyme PQQ synthesis protein E; Catalyzes the cross-linking of a glutamate residue and a tyrosine residue in the PqqA protein as part of the biosynthesis of pyrroloquinoline quinone (PQQ). | 0.716 |
| PP_2667 | qedH-I | PP_2667 | PP_2674 | ABC transporter. | Quinoprotein ethanol dehydrogenase; Function experimentally demonstrated in the studied species; enzyme; Energy metabolism. | 0.775 |
| PP_2667 | qedH-II | PP_2667 | PP_2679 | ABC transporter. | Quinoprotein ethanol dehydrogenase; Function experimentally demonstrated in the studied species; enzyme; Energy metabolism. | 0.788 |
| PP_2675 | PP_2667 | PP_2675 | PP_2667 | Cytochrome c-type protein. | ABC transporter. | 0.789 |
| PP_2675 | pqqB | PP_2675 | PP_0379 | Cytochrome c-type protein. | Coenzyme PQQ synthesis protein B; May be involved in the transport of PQQ or its precursor to the periplasm; Belongs to the PqqB family. | 0.780 |
| PP_2675 | pqqC | PP_2675 | PP_0378 | Cytochrome c-type protein. | Pyrroloquinoline-quinone synthase; Ring cyclization and eight-electron oxidation of 3a-(2-amino- 2-carboxyethyl)-4,5-dioxo-4,5,6,7,8,9-hexahydroquinoline-7,9- dicarboxylic-acid to PQQ. | 0.783 |
| PP_2675 | pqqD-I | PP_2675 | PP_0377 | Cytochrome c-type protein. | Coenzyme PQQ synthesis protein D; Functions as a PqqA binding protein and presents PqqA to PqqE, in the pyrroloquinoline quinone (PQQ) biosynthetic pathway. | 0.475 |
| PP_2675 | pqqD-II | PP_2675 | PP_2681 | Cytochrome c-type protein. | Coenzyme PQQ synthesis protein D; Functions as a PqqA binding protein and presents PqqA to PqqE, in the pyrroloquinoline quinone (PQQ) biosynthetic pathway. | 0.625 |
| PP_2675 | pqqE | PP_2675 | PP_0376 | Cytochrome c-type protein. | Coenzyme PQQ synthesis protein E; Catalyzes the cross-linking of a glutamate residue and a tyrosine residue in the PqqA protein as part of the biosynthesis of pyrroloquinoline quinone (PQQ). | 0.663 |