| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| PSHAa0642 | PSHAa2222 | PSHAa0642 | PSHAa2222 | Putative orphan protein; No homology to any previously reported sequences. | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | 0.949 |
| PSHAa0642 | PSHAa2223 | PSHAa0642 | PSHAa2223 | Putative orphan protein; No homology to any previously reported sequences. | putativeB12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (N terminal); Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy. | 0.949 |
| PSHAa0642 | metA | PSHAa0642 | PSHAa2224 | Putative orphan protein; No homology to any previously reported sequences. | Homoserine O-succinyltransferase (Homoserine O-transsuccinylase) (HTS); Transfers a succinyl group from succinyl-CoA to L-homoserine, forming succinyl-L-homoserine; Belongs to the MetA family. | 0.902 |
| PSHAa0642 | metB | PSHAa0642 | PSHAa2723 | Putative orphan protein; No homology to any previously reported sequences. | Cystathionine gamma-synthase, PLP-dependent; Function of homologous gene experimentally demonstrated in an other organism; enzyme. | 0.656 |
| PSHAa0642 | metL | PSHAa0642 | PSHAa2722 | Putative orphan protein; No homology to any previously reported sequences. | Bifunctional: aspartokinase II (N-terminal); Function of homologous gene experimentally demonstrated in an other organism; enzyme; In the C-terminal section; belongs to the homoserine dehydrogenase family. | 0.779 |
| PSHAa0642 | thrA | PSHAa0642 | PSHAa2379 | Putative orphan protein; No homology to any previously reported sequences. | Bifunctional aspartokinase/homoserine dehydrogenase I; Function of homologous gene experimentally demonstrated in an other organism; enzyme; In the C-terminal section; belongs to the homoserine dehydrogenase family. | 0.779 |
| PSHAa2222 | PSHAa0642 | PSHAa2222 | PSHAa0642 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Putative orphan protein; No homology to any previously reported sequences. | 0.949 |
| PSHAa2222 | PSHAa2223 | PSHAa2222 | PSHAa2223 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | putativeB12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (N terminal); Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy. | 0.999 |
| PSHAa2222 | PSHAb0477 | PSHAa2222 | PSHAb0477 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Putative cystathionine gamma-synthase or beta-lyase, PLP-dependent; Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy; enzyme. | 0.953 |
| PSHAa2222 | ilvA | PSHAa2222 | PSHAa2768 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Threonine deaminase; Catalyzes the anaerobic formation of alpha-ketobutyrate and ammonia from threonine in a two-step reaction. The first step involved a dehydration of threonine and a production of enamine intermediates (aminocrotonate), which tautomerizes to its imine form (iminobutyrate). Both intermediates are unstable and short-lived. The second step is the nonenzymatic hydrolysis of the enamine/imine intermediates to form 2- ketobutyrate and free ammonia. In the low water environment of the cell, the second step is accelerated by RidA. | 0.879 |
| PSHAa2222 | metA | PSHAa2222 | PSHAa2224 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Homoserine O-succinyltransferase (Homoserine O-transsuccinylase) (HTS); Transfers a succinyl group from succinyl-CoA to L-homoserine, forming succinyl-L-homoserine; Belongs to the MetA family. | 0.961 |
| PSHAa2222 | metB | PSHAa2222 | PSHAa2723 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Cystathionine gamma-synthase, PLP-dependent; Function of homologous gene experimentally demonstrated in an other organism; enzyme. | 0.957 |
| PSHAa2222 | metL | PSHAa2222 | PSHAa2722 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Bifunctional: aspartokinase II (N-terminal); Function of homologous gene experimentally demonstrated in an other organism; enzyme; In the C-terminal section; belongs to the homoserine dehydrogenase family. | 0.975 |
| PSHAa2222 | metX | PSHAa2222 | PSHAa2945 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Putative homoserine O-acetyltransferase (EC 2.3. 1.31); Function of strongly homologous gene; enzyme; Belongs to the AB hydrolase superfamily. MetX family. | 0.704 |
| PSHAa2222 | thrA | PSHAa2222 | PSHAa2379 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Bifunctional aspartokinase/homoserine dehydrogenase I; Function of homologous gene experimentally demonstrated in an other organism; enzyme; In the C-terminal section; belongs to the homoserine dehydrogenase family. | 0.975 |
| PSHAa2222 | thrB | PSHAa2222 | PSHAa2378 | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | Homoserine kinase; Catalyzes the ATP-dependent phosphorylation of L-homoserine to L-homoserine phosphate; Belongs to the GHMP kinase family. Homoserine kinase subfamily. | 0.876 |
| PSHAa2223 | PSHAa0642 | PSHAa2223 | PSHAa0642 | putativeB12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (N terminal); Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy. | Putative orphan protein; No homology to any previously reported sequences. | 0.949 |
| PSHAa2223 | PSHAa2222 | PSHAa2223 | PSHAa2222 | putativeB12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (N terminal); Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy. | Putative B12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (C terminal); Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate. | 0.999 |
| PSHAa2223 | PSHAb0477 | PSHAa2223 | PSHAb0477 | putativeB12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (N terminal); Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy. | Putative cystathionine gamma-synthase or beta-lyase, PLP-dependent; Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy; enzyme. | 0.953 |
| PSHAa2223 | ilvA | PSHAa2223 | PSHAa2768 | putativeB12-dependent homocysteine-N5-methyltetrahydrofolate transmethylase (N terminal); Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy. | Threonine deaminase; Catalyzes the anaerobic formation of alpha-ketobutyrate and ammonia from threonine in a two-step reaction. The first step involved a dehydration of threonine and a production of enamine intermediates (aminocrotonate), which tautomerizes to its imine form (iminobutyrate). Both intermediates are unstable and short-lived. The second step is the nonenzymatic hydrolysis of the enamine/imine intermediates to form 2- ketobutyrate and free ammonia. In the low water environment of the cell, the second step is accelerated by RidA. | 0.879 |