| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| SPO0126 | queA | SPO0126 | SPO2226 | Membrane protein, putative; Involved in the import of queuosine (Q) precursors, required for Q precursor salvage; Belongs to the vitamin uptake transporter (VUT/ECF) (TC 2.A.88) family. Q precursor transporter subfamily. | S-adenosylmethionine:tRNA ribosyltransferase-isomerase; Transfers and isomerizes the ribose moiety from AdoMet to the 7-aminomethyl group of 7-deazaguanine (preQ1-tRNA) to give epoxyqueuosine (oQ-tRNA). | 0.636 |
| SPO0126 | queF | SPO0126 | SPO3753 | Membrane protein, putative; Involved in the import of queuosine (Q) precursors, required for Q precursor salvage; Belongs to the vitamin uptake transporter (VUT/ECF) (TC 2.A.88) family. Q precursor transporter subfamily. | GTP cyclohydrolase family protein; Catalyzes the NADPH-dependent reduction of 7-cyano-7- deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1). Belongs to the GTP cyclohydrolase I family. QueF type 1 subfamily. | 0.668 |
| SPO3903 | exsB | SPO3903 | SPO3751 | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | 0.998 |
| SPO3903 | guaA | SPO3903 | SPO2109 | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | GMP synthase; Catalyzes the synthesis of GMP from XMP. | 0.487 |
| SPO3903 | queA | SPO3903 | SPO2226 | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | S-adenosylmethionine:tRNA ribosyltransferase-isomerase; Transfers and isomerizes the ribose moiety from AdoMet to the 7-aminomethyl group of 7-deazaguanine (preQ1-tRNA) to give epoxyqueuosine (oQ-tRNA). | 0.411 |
| SPO3903 | queE | SPO3903 | SPO3752 | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | Radical SAM domain protein; Catalyzes the complex heterocyclic radical-mediated conversion of 6-carboxy-5,6,7,8-tetrahydropterin (CPH4) to 7-carboxy-7- deazaguanine (CDG), a step common to the biosynthetic pathways of all 7-deazapurine-containing compounds. | 0.999 |
| SPO3903 | queF | SPO3903 | SPO3753 | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | GTP cyclohydrolase family protein; Catalyzes the NADPH-dependent reduction of 7-cyano-7- deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1). Belongs to the GTP cyclohydrolase I family. QueF type 1 subfamily. | 0.986 |
| SPO3903 | ribB | SPO3903 | SPO1761 | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | 3,4-dihydroxy-2-butanone 4-phosphate synthase/GTP cyclohydrolase II, putative; Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate; Belongs to the DHBP synthase family. | 0.493 |
| SPO3903 | tgt | SPO3903 | SPO2616 | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | Queuine tRNA-ribosyltransferase; Catalyzes the base-exchange of a guanine (G) residue with the queuine precursor 7-aminomethyl-7-deazaguanine (PreQ1) at position 34 (anticodon wobble position) in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr). Catalysis occurs through a double-displacement mechanism. The nucleophile active site attacks the C1' of nucleotide 34 to detach the guanine base from the RNA, forming a covalent enzyme-RNA intermediate. The proton acceptor active site deprotonates the incoming PreQ1, allowing a nucleophilic attack on the C1' of the ribose to form th [...] | 0.484 |
| cysH | queF | SPO2635 | SPO3753 | Phosophoadenylyl-sulfate reductase; Reduction of activated sulfate into sulfite. Belongs to the PAPS reductase family. CysH subfamily. | GTP cyclohydrolase family protein; Catalyzes the NADPH-dependent reduction of 7-cyano-7- deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1). Belongs to the GTP cyclohydrolase I family. QueF type 1 subfamily. | 0.430 |
| cysH | ribB | SPO2635 | SPO1761 | Phosophoadenylyl-sulfate reductase; Reduction of activated sulfate into sulfite. Belongs to the PAPS reductase family. CysH subfamily. | 3,4-dihydroxy-2-butanone 4-phosphate synthase/GTP cyclohydrolase II, putative; Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate; Belongs to the DHBP synthase family. | 0.442 |
| exsB | SPO3903 | SPO3751 | SPO3903 | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | 0.998 |
| exsB | guaA | SPO3751 | SPO2109 | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | GMP synthase; Catalyzes the synthesis of GMP from XMP. | 0.436 |
| exsB | queA | SPO3751 | SPO2226 | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | S-adenosylmethionine:tRNA ribosyltransferase-isomerase; Transfers and isomerizes the ribose moiety from AdoMet to the 7-aminomethyl group of 7-deazaguanine (preQ1-tRNA) to give epoxyqueuosine (oQ-tRNA). | 0.452 |
| exsB | queE | SPO3751 | SPO3752 | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | Radical SAM domain protein; Catalyzes the complex heterocyclic radical-mediated conversion of 6-carboxy-5,6,7,8-tetrahydropterin (CPH4) to 7-carboxy-7- deazaguanine (CDG), a step common to the biosynthetic pathways of all 7-deazapurine-containing compounds. | 0.999 |
| exsB | queF | SPO3751 | SPO3753 | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | GTP cyclohydrolase family protein; Catalyzes the NADPH-dependent reduction of 7-cyano-7- deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1). Belongs to the GTP cyclohydrolase I family. QueF type 1 subfamily. | 0.998 |
| exsB | queG | SPO3751 | SPO3763 | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | Iron-sulfur cluster-binding protein; Catalyzes the conversion of epoxyqueuosine (oQ) to queuosine (Q), which is a hypermodified base found in the wobble positions of tRNA(Asp), tRNA(Asn), tRNA(His) and tRNA(Tyr); Belongs to the QueG family. | 0.435 |
| exsB | ribB | SPO3751 | SPO1761 | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | 3,4-dihydroxy-2-butanone 4-phosphate synthase/GTP cyclohydrolase II, putative; Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate; Belongs to the DHBP synthase family. | 0.442 |
| exsB | tgt | SPO3751 | SPO2616 | ExsB; Catalyzes the ATP-dependent conversion of 7-carboxy-7- deazaguanine (CDG) to 7-cyano-7-deazaguanine (preQ(0)). Belongs to the QueC family. | Queuine tRNA-ribosyltransferase; Catalyzes the base-exchange of a guanine (G) residue with the queuine precursor 7-aminomethyl-7-deazaguanine (PreQ1) at position 34 (anticodon wobble position) in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr). Catalysis occurs through a double-displacement mechanism. The nucleophile active site attacks the C1' of nucleotide 34 to detach the guanine base from the RNA, forming a covalent enzyme-RNA intermediate. The proton acceptor active site deprotonates the incoming PreQ1, allowing a nucleophilic attack on the C1' of the ribose to form th [...] | 0.476 |
| guaA | SPO3903 | SPO2109 | SPO3903 | GMP synthase; Catalyzes the synthesis of GMP from XMP. | 6-pyruvoyl tetrahydropterin synthase, putative; Identified by match to protein family HMM PF01242. | 0.487 |