| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| glyA | ilvA | plu3291 | plu4681 | Serine hydroxymethyltransferase (serine methylase) (SHMT); Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. | Threonine dehydratase biosynthetic (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. | 0.915 |
| glyA | plu0524 | plu3291 | plu0524 | Serine hydroxymethyltransferase (serine methylase) (SHMT); Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. | Unnamed protein product; Similar to cystathionine beta-synthase. | 0.939 |
| glyA | pssA | plu3291 | plu1271 | Serine hydroxymethyltransferase (serine methylase) (SHMT); Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. | CDP-diacylglycerol--serine O-phosphatidyltransferase (phosphatidylserine synthase). | 0.920 |
| glyA | sdaA | plu3291 | plu2696 | Serine hydroxymethyltransferase (serine methylase) (SHMT); Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. | L-serine dehydratase 1 (SDH 1); Belongs to the iron-sulfur dependent L-serine dehydratase family. | 0.960 |
| glyA | serB | plu3291 | plu0551 | Serine hydroxymethyltransferase (serine methylase) (SHMT); Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. | Phosphoserine phosphatase. | 0.927 |
| glyA | serC | plu3291 | plu1619 | Serine hydroxymethyltransferase (serine methylase) (SHMT); Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. | 3-phosphoserine aminotransferase; Catalyzes the reversible conversion of 3- phosphohydroxypyruvate to phosphoserine and of 3-hydroxy-2-oxo-4- phosphonooxybutanoate to phosphohydroxythreonine; Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. SerC subfamily. | 0.614 |
| glyA | trpA | plu3291 | plu2467 | Serine hydroxymethyltransferase (serine methylase) (SHMT); Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. | Tryptophan synthase alpha subunit; The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate. Belongs to the TrpA family. | 0.932 |
| glyA | trpB | plu3291 | plu2466 | Serine hydroxymethyltransferase (serine methylase) (SHMT); Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. | Tryptophan synthase beta chain; The beta subunit is responsible for the synthesis of L- tryptophan from indole and L-serine. | 0.927 |
| hisD | hisI | plu1569 | plu1564 | Histidinol dehydrogenase; Catalyzes the sequential NAD-dependent oxidations of L- histidinol to L-histidinaldehyde and then to L-histidine. | phosphoribosyl-AMP cyclohydrolase (PRA-CH) / phosphoribosyl-ATP pyrophosphatase (PRA-PH); In the C-terminal section; belongs to the PRA-PH family. | 0.999 |
| hisD | ilvA | plu1569 | plu4681 | Histidinol dehydrogenase; Catalyzes the sequential NAD-dependent oxidations of L- histidinol to L-histidinaldehyde and then to L-histidine. | Threonine dehydratase biosynthetic (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. | 0.471 |
| hisD | serB | plu1569 | plu0551 | Histidinol dehydrogenase; Catalyzes the sequential NAD-dependent oxidations of L- histidinol to L-histidinaldehyde and then to L-histidine. | Phosphoserine phosphatase. | 0.854 |
| hisD | serC | plu1569 | plu1619 | Histidinol dehydrogenase; Catalyzes the sequential NAD-dependent oxidations of L- histidinol to L-histidinaldehyde and then to L-histidine. | 3-phosphoserine aminotransferase; Catalyzes the reversible conversion of 3- phosphohydroxypyruvate to phosphoserine and of 3-hydroxy-2-oxo-4- phosphonooxybutanoate to phosphohydroxythreonine; Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. SerC subfamily. | 0.601 |
| hisD | trpA | plu1569 | plu2467 | Histidinol dehydrogenase; Catalyzes the sequential NAD-dependent oxidations of L- histidinol to L-histidinaldehyde and then to L-histidine. | Tryptophan synthase alpha subunit; The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate. Belongs to the TrpA family. | 0.932 |
| hisD | trpB | plu1569 | plu2466 | Histidinol dehydrogenase; Catalyzes the sequential NAD-dependent oxidations of L- histidinol to L-histidinaldehyde and then to L-histidine. | Tryptophan synthase beta chain; The beta subunit is responsible for the synthesis of L- tryptophan from indole and L-serine. | 0.834 |
| hisI | hisD | plu1564 | plu1569 | phosphoribosyl-AMP cyclohydrolase (PRA-CH) / phosphoribosyl-ATP pyrophosphatase (PRA-PH); In the C-terminal section; belongs to the PRA-PH family. | Histidinol dehydrogenase; Catalyzes the sequential NAD-dependent oxidations of L- histidinol to L-histidinaldehyde and then to L-histidine. | 0.999 |
| hisI | plu0524 | plu1564 | plu0524 | phosphoribosyl-AMP cyclohydrolase (PRA-CH) / phosphoribosyl-ATP pyrophosphatase (PRA-PH); In the C-terminal section; belongs to the PRA-PH family. | Unnamed protein product; Similar to cystathionine beta-synthase. | 0.426 |
| hisI | serB | plu1564 | plu0551 | phosphoribosyl-AMP cyclohydrolase (PRA-CH) / phosphoribosyl-ATP pyrophosphatase (PRA-PH); In the C-terminal section; belongs to the PRA-PH family. | Phosphoserine phosphatase. | 0.931 |
| hisI | serC | plu1564 | plu1619 | phosphoribosyl-AMP cyclohydrolase (PRA-CH) / phosphoribosyl-ATP pyrophosphatase (PRA-PH); In the C-terminal section; belongs to the PRA-PH family. | 3-phosphoserine aminotransferase; Catalyzes the reversible conversion of 3- phosphohydroxypyruvate to phosphoserine and of 3-hydroxy-2-oxo-4- phosphonooxybutanoate to phosphohydroxythreonine; Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. SerC subfamily. | 0.448 |
| hisI | trpA | plu1564 | plu2467 | phosphoribosyl-AMP cyclohydrolase (PRA-CH) / phosphoribosyl-ATP pyrophosphatase (PRA-PH); In the C-terminal section; belongs to the PRA-PH family. | Tryptophan synthase alpha subunit; The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate. Belongs to the TrpA family. | 0.733 |
| hisI | trpB | plu1564 | plu2466 | phosphoribosyl-AMP cyclohydrolase (PRA-CH) / phosphoribosyl-ATP pyrophosphatase (PRA-PH); In the C-terminal section; belongs to the PRA-PH family. | Tryptophan synthase beta chain; The beta subunit is responsible for the synthesis of L- tryptophan from indole and L-serine. | 0.679 |