node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
cadB | potE | b4132 | b0692 | Putative lysine/cadaverine transporter; Probable cadaverine/lysine antiporter or part of it. | Putrescine transporter PotE; Catalyzes both the uptake and excretion of putrescine. The uptake of putrescine is dependent on the membrane potential and the excretion involves putrescine-ornithine antiporter activity. | 0.433 |
cadB | puuP | b4132 | b1296 | Putative lysine/cadaverine transporter; Probable cadaverine/lysine antiporter or part of it. | Putrescine importer; Involved in the uptake of putrescine. Belongs to the amino acid-polyamine-organocation (APC) superfamily. | 0.676 |
potE | cadB | b0692 | b4132 | Putrescine transporter PotE; Catalyzes both the uptake and excretion of putrescine. The uptake of putrescine is dependent on the membrane potential and the excretion involves putrescine-ornithine antiporter activity. | Putative lysine/cadaverine transporter; Probable cadaverine/lysine antiporter or part of it. | 0.433 |
potE | puuA | b0692 | b1297 | Putrescine transporter PotE; Catalyzes both the uptake and excretion of putrescine. The uptake of putrescine is dependent on the membrane potential and the excretion involves putrescine-ornithine antiporter activity. | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | 0.507 |
potE | puuP | b0692 | b1296 | Putrescine transporter PotE; Catalyzes both the uptake and excretion of putrescine. The uptake of putrescine is dependent on the membrane potential and the excretion involves putrescine-ornithine antiporter activity. | Putrescine importer; Involved in the uptake of putrescine. Belongs to the amino acid-polyamine-organocation (APC) superfamily. | 0.839 |
potE | speE | b0692 | b0121 | Putrescine transporter PotE; Catalyzes both the uptake and excretion of putrescine. The uptake of putrescine is dependent on the membrane potential and the excretion involves putrescine-ornithine antiporter activity. | Spermidine synthase (putrescine aminopropyltransferase); Involved in the biosynthesis of polyamines which play a significant role in the structural and functional organization in the chromoid of E.coli by compacting DNA and neutralizing negative charges. Catalyzes the irreversible transfer (ping-pong mechanism) of a propylamine group from the amino donor S-adenosylmethioninamine (decarboxy-AdoMet) to putrescine (1,4-diaminobutane) to yield spermidine. Cadaverine (1,5-diaminopentane) and spermidine can also be used as the propylamine acceptor. | 0.625 |
potE | speG | b0692 | b1584 | Putrescine transporter PotE; Catalyzes both the uptake and excretion of putrescine. The uptake of putrescine is dependent on the membrane potential and the excretion involves putrescine-ornithine antiporter activity. | Spermidine N(1)-acetyltransferase; Involved in the protection against polyamine toxicity by regulating their concentration. Catalyzes the transfer of an acetyl group from acetyl coenzyme A (AcCoA) to the primary amino groups of spermidine to yield N(1)- and N(8)-acetylspermidine. It can also use polyamines such as spermine, but not putrescine. | 0.535 |
puuA | potE | b1297 | b0692 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | Putrescine transporter PotE; Catalyzes both the uptake and excretion of putrescine. The uptake of putrescine is dependent on the membrane potential and the excretion involves putrescine-ornithine antiporter activity. | 0.507 |
puuA | puuB | b1297 | b1301 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | Gamma-glutamylputrescine oxidoreductase; Involved in the breakdown of putrescine via the oxidation of L-glutamylputrescine. | 0.999 |
puuA | puuC | b1297 | b1300 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | Gamma-glutamyl-gamma-aminobutyraldehyde dehydrogenase; Catalyzes the oxidation of 3-hydroxypropionaldehyde (3-HPA) to 3-hydroxypropionic acid (3-HP). It acts preferentially with NAD but can also use NADP. 3-HPA appears to be the most suitable substrate for PuuC followed by isovaleraldehyde, propionaldehyde, butyraldehyde, and valeraldehyde. It might play a role in propionate and/or acetic acid metabolisms. Also involved in the breakdown of putrescine through the oxidation of gamma-Glu-gamma-aminobutyraldehyde to gamma-Glu-gamma-aminobutyrate (gamma-Glu-GABA). | 0.947 |
puuA | puuD | b1297 | b1298 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | Gamma-glutamyl-gamma-aminobutyrate hydrolase; Involved in the breakdown of putrescine via hydrolysis of the gamma-glutamyl linkage of gamma-glutamyl-gamma-aminobutyrate. | 0.996 |
puuA | puuE | b1297 | b1302 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | 4-aminobutyrate aminotransferase, PLP-dependent; Catalyzes the transfer of the amino group from gamma- aminobutyrate (GABA) to alpha-ketoglutarate (KG) to yield succinic semialdehyde (SSA). PuuE is important for utilization of putrescine as the sole nitrogen or carbon source; Belongs to the class-III pyridoxal-phosphate-dependent aminotransferase family. | 0.827 |
puuA | puuP | b1297 | b1296 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | Putrescine importer; Involved in the uptake of putrescine. Belongs to the amino acid-polyamine-organocation (APC) superfamily. | 0.919 |
puuA | puuR | b1297 | b1299 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | Repressor for the divergent puu operons, putrescine inducible; Represses puuA, puuD and puuP. | 0.987 |
puuA | speE | b1297 | b0121 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | Spermidine synthase (putrescine aminopropyltransferase); Involved in the biosynthesis of polyamines which play a significant role in the structural and functional organization in the chromoid of E.coli by compacting DNA and neutralizing negative charges. Catalyzes the irreversible transfer (ping-pong mechanism) of a propylamine group from the amino donor S-adenosylmethioninamine (decarboxy-AdoMet) to putrescine (1,4-diaminobutane) to yield spermidine. Cadaverine (1,5-diaminopentane) and spermidine can also be used as the propylamine acceptor. | 0.980 |
puuA | speG | b1297 | b1584 | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | Spermidine N(1)-acetyltransferase; Involved in the protection against polyamine toxicity by regulating their concentration. Catalyzes the transfer of an acetyl group from acetyl coenzyme A (AcCoA) to the primary amino groups of spermidine to yield N(1)- and N(8)-acetylspermidine. It can also use polyamines such as spermine, but not putrescine. | 0.979 |
puuB | puuA | b1301 | b1297 | Gamma-glutamylputrescine oxidoreductase; Involved in the breakdown of putrescine via the oxidation of L-glutamylputrescine. | Glutamate--putrescine ligase; Involved in the breakdown of putrescine via the biosynthesis of gamma-L-glutamylputrescine. It is able to use several diamines, spermidine and spermine. Absolutely essential to utilize putrescine as both nitrogen and carbon sources and to decrease the toxicity of putrescine, which can lead to inhibition of cell growth and protein synthesis; Belongs to the glutamine synthetase family. | 0.999 |
puuB | puuC | b1301 | b1300 | Gamma-glutamylputrescine oxidoreductase; Involved in the breakdown of putrescine via the oxidation of L-glutamylputrescine. | Gamma-glutamyl-gamma-aminobutyraldehyde dehydrogenase; Catalyzes the oxidation of 3-hydroxypropionaldehyde (3-HPA) to 3-hydroxypropionic acid (3-HP). It acts preferentially with NAD but can also use NADP. 3-HPA appears to be the most suitable substrate for PuuC followed by isovaleraldehyde, propionaldehyde, butyraldehyde, and valeraldehyde. It might play a role in propionate and/or acetic acid metabolisms. Also involved in the breakdown of putrescine through the oxidation of gamma-Glu-gamma-aminobutyraldehyde to gamma-Glu-gamma-aminobutyrate (gamma-Glu-GABA). | 0.999 |
puuB | puuD | b1301 | b1298 | Gamma-glutamylputrescine oxidoreductase; Involved in the breakdown of putrescine via the oxidation of L-glutamylputrescine. | Gamma-glutamyl-gamma-aminobutyrate hydrolase; Involved in the breakdown of putrescine via hydrolysis of the gamma-glutamyl linkage of gamma-glutamyl-gamma-aminobutyrate. | 0.988 |
puuB | puuE | b1301 | b1302 | Gamma-glutamylputrescine oxidoreductase; Involved in the breakdown of putrescine via the oxidation of L-glutamylputrescine. | 4-aminobutyrate aminotransferase, PLP-dependent; Catalyzes the transfer of the amino group from gamma- aminobutyrate (GABA) to alpha-ketoglutarate (KG) to yield succinic semialdehyde (SSA). PuuE is important for utilization of putrescine as the sole nitrogen or carbon source; Belongs to the class-III pyridoxal-phosphate-dependent aminotransferase family. | 0.993 |