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Your query returned 3 entries. 
Printable version
| EC | 2.5.1.79 | ||||||
| Accepted name: | thermospermine synthase | ||||||
| Reaction: | S-adenosyl 3-(methylsulfanyl)propylamine + spermidine = S-methyl-5′-thioadenosine + thermospermine + H+ | ||||||
| Glossary: | thermospermine = N1-[3-(3-aminopropylamino)propyl]butane-1,4-diamine S-adenosyl 3-(methylsulfanyl)propylamine = (3-aminopropyl){[(2S,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl}methylsulfonium |
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| Other name(s): | TSPMS; ACL5; SAC51; S-adenosyl 3-(methylthio)propylamine:spermidine 3-aminopropyltransferase (thermospermine synthesizing) | ||||||
| Systematic name: | S-adenosyl 3-(methylsulfanyl)propylamine:spermidine 3-aminopropyltransferase (thermospermine-forming) | ||||||
| Comments: | This plant enzyme is crucial for the proper functioning of xylem vessel elements in the vascular tissues of plants [3]. | ||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB | ||||||
| References: |
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| EC | 2.5.1.126 | ||||||
| Accepted name: | norspermine synthase | ||||||
| Reaction: | S-adenosyl 3-(methylsulfanyl)propylamine + norspermidine = S-methyl-5′-thioadenosine + norspermine | ||||||
| Glossary: | norspermidine = bis(3-aminopropyl)amine norspermine = N,N′-bis(3-aminopropyl)-1,3-propanediamine spermidine = N-(3-aminopropyl)-1,4-butanediamine thermospermine = N-{3-[(3-aminopropyl)amino]propyl}-1,4-butanediamine |
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| Other name(s): | long-chain polyamine synthase (ambiguous) | ||||||
| Systematic name: | S-adenosyl 3-(methylsulfanyl)propylamine:norspermidine 3-aminopropyltransferase | ||||||
| Comments: | The enzyme, characterized from the thermophilic archaeon Pyrobaculum aerophilum, can also synthesize norspermidine from propane-1,3-diamine and thermospermine from spermidine (with lower activity). The long-chain polyamines stabilize double-stranded DNA at high temperatures. In contrast to EC 2.5.1.127, caldopentamine synthase, this enzyme does not accept norspermine as a substrate. | ||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB | ||||||
| References: |
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| EC | 2.5.1.127 | ||||||
| Accepted name: | caldopentamine synthase | ||||||
| Reaction: | S-adenosyl 3-(methylsulfanyl)propylamine + norspermine = S-methyl-5′-thioadenosine + caldopentamine | ||||||
| Glossary: | caldopentamine = N-(3-aminopropyl)-N′-{3-[(3-aminopropyl)amino]propyl}-1,3-propanediamine norspermidine = N-(3-aminopropyl)-1,4-butanediamine norspermine = N,N′-bis(3-aminopropyl)-1,3-propanediamine spermidine = N-(3-aminopropyl)-1,4-butanediamine thermospermine = N-{3-[(3-aminopropyl)amino]propyl}-1,4-butanediamine |
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| Other name(s): | long-chain polyamine synthase (ambiguous) | ||||||
| Systematic name: | S-adenosyl 3-(methylsulfanyl)propylamine:norspermine 3-aminopropyltransferase | ||||||
| Comments: | The enzyme, characterized from the thermophilic archaeon Hyperthermus butylicus, can also synthesize norspermine from norspermidine and thermospermine from spermidine (with lower activity). The long-chain polyamines stabilize double-stranded DNA at high temperatures. In contrast to EC 2.5.1.23, sym-norspermidine synthase and EC 2.5.1.126, norspermine synthase, this enzyme shows no activity with propane-1,3-diamine. | ||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||
| References: |
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