| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| carA | carB | spr1154 | spr1153 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Carbamoylphosphate synthase (ammonia), heavy subunit. | 0.999 |
| carA | pyrB | spr1154 | spr1155 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Aspartate carbamoyltransferase; Belongs to the aspartate/ornithine carbamoyltransferase superfamily. ATCase family. | 0.999 |
| carA | pyrC | spr1154 | spr1053 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Dihydroorotase; Catalyzes the reversible cyclization of carbamoyl aspartate to dihydroorotate; Belongs to the metallo-dependent hydrolases superfamily. DHOase family. Class I DHOase subfamily. | 0.998 |
| carA | pyrD | spr1154 | spr0866 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Dihydroorotate dehydrogenase; Catalyzes the conversion of dihydroorotate to orotate with NAD(+) as electron acceptor; Belongs to the dihydroorotate dehydrogenase family. Type 1 subfamily. | 0.866 |
| carA | pyrDA | spr1154 | spr0672 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Dihydroorotate dehydrogenase; Catalyzes the conversion of dihydroorotate to orotate with fumarate as the electron acceptor; Belongs to the dihydroorotate dehydrogenase family. Type 1 subfamily. | 0.892 |
| carA | pyrDII | spr1154 | spr0865 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Dihydroorotate dehydrogenase electron transfer subunit; Responsible for channeling the electrons from the oxidation of dihydroorotate from the FMN redox center in the PyrD type B subunit to the ultimate electron acceptor NAD(+). | 0.975 |
| carA | pyrE | spr1154 | spr0614 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Orotate phosphoribosyltransferase; Catalyzes the transfer of a ribosyl phosphate group from 5- phosphoribose 1-diphosphate to orotate, leading to the formation of orotidine monophosphate (OMP). | 0.948 |
| carA | pyrF | spr1154 | spr0613 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Orotidine-5'-decarboxylase; Catalyzes the decarboxylation of orotidine 5'-monophosphate (OMP) to uridine 5'-monophosphate (UMP); Belongs to the OMP decarboxylase family. Type 1 subfamily. | 0.946 |
| carA | pyrP | spr1154 | spr1165 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Uracil permease. | 0.796 |
| carA | pyrR | spr1154 | spr1156 | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | Transcriptional attenuation of the pyrimidine operon / uracil phosphoribosyltransferase activity; Regulates transcriptional attenuation of the pyrimidine nucleotide (pyr) operon by binding in a uridine-dependent manner to specific sites on pyr mRNA. This disrupts an antiterminator hairpin in the RNA and favors formation of a downstream transcription terminator, leading to a reduced expression of downstream genes. Belongs to the purine/pyrimidine phosphoribosyltransferase family. PyrR subfamily. | 0.919 |
| carB | carA | spr1153 | spr1154 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Carbamoylphosphate synthase (glutamine-hydrolysing) light subunit; Belongs to the CarA family. | 0.999 |
| carB | pyrB | spr1153 | spr1155 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Aspartate carbamoyltransferase; Belongs to the aspartate/ornithine carbamoyltransferase superfamily. ATCase family. | 0.999 |
| carB | pyrC | spr1153 | spr1053 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Dihydroorotase; Catalyzes the reversible cyclization of carbamoyl aspartate to dihydroorotate; Belongs to the metallo-dependent hydrolases superfamily. DHOase family. Class I DHOase subfamily. | 0.998 |
| carB | pyrD | spr1153 | spr0866 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Dihydroorotate dehydrogenase; Catalyzes the conversion of dihydroorotate to orotate with NAD(+) as electron acceptor; Belongs to the dihydroorotate dehydrogenase family. Type 1 subfamily. | 0.945 |
| carB | pyrDA | spr1153 | spr0672 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Dihydroorotate dehydrogenase; Catalyzes the conversion of dihydroorotate to orotate with fumarate as the electron acceptor; Belongs to the dihydroorotate dehydrogenase family. Type 1 subfamily. | 0.951 |
| carB | pyrDII | spr1153 | spr0865 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Dihydroorotate dehydrogenase electron transfer subunit; Responsible for channeling the electrons from the oxidation of dihydroorotate from the FMN redox center in the PyrD type B subunit to the ultimate electron acceptor NAD(+). | 0.995 |
| carB | pyrE | spr1153 | spr0614 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Orotate phosphoribosyltransferase; Catalyzes the transfer of a ribosyl phosphate group from 5- phosphoribose 1-diphosphate to orotate, leading to the formation of orotidine monophosphate (OMP). | 0.987 |
| carB | pyrF | spr1153 | spr0613 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Orotidine-5'-decarboxylase; Catalyzes the decarboxylation of orotidine 5'-monophosphate (OMP) to uridine 5'-monophosphate (UMP); Belongs to the OMP decarboxylase family. Type 1 subfamily. | 0.984 |
| carB | pyrP | spr1153 | spr1165 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Uracil permease. | 0.945 |
| carB | pyrR | spr1153 | spr1156 | Carbamoylphosphate synthase (ammonia), heavy subunit. | Transcriptional attenuation of the pyrimidine operon / uracil phosphoribosyltransferase activity; Regulates transcriptional attenuation of the pyrimidine nucleotide (pyr) operon by binding in a uridine-dependent manner to specific sites on pyr mRNA. This disrupts an antiterminator hairpin in the RNA and favors formation of a downstream transcription terminator, leading to a reduced expression of downstream genes. Belongs to the purine/pyrimidine phosphoribosyltransferase family. PyrR subfamily. | 0.991 |