ExplorEnz: EC 2.5.1.104

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2.5.1.104

Accepted name:

N¹-aminopropylagmatine synthase

Reaction:

S-adenosyl 3-(methylsulfanyl)propylamine + agmatine = S-methyl-5′-thioadenosine + N¹-(3-aminopropyl)agmatine

For diagram of spermidine biosynthesis, click here

Glossary:

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

Other name(s):

agmatine/cadaverine aminopropyl transferase; ACAPT; PF0127 (gene name); triamine/agmatine aminopropyltransferase; SpeE (ambiguous); agmatine aminopropyltransferase; S-adenosyl 3-(methylthio)propylamine:agmatine 3-aminopropyltransferase

Systematic name:

S-adenosyl 3-(methylsulfanyl)propylamine:agmatine 3-aminopropyltransferase

Comments:

The enzyme is involved in the biosynthesis of spermidine from agmatine in some archaea and bacteria. The enzyme from the Gram-negative bacterium Thermus thermophilus accepts agmatine, spermidine and norspermidine with similar catalytic efficiency. The enzymes from the archaea Pyrococcus furiosus and Thermococcus kodakarensis prefer agmatine, but can utilize cadaverine, putrescine and propane-1,3-diamine with much lower catalytic efficiency. cf. EC 2.5.1.16, spermidine synthase, and EC 2.5.1.23, sym-norspermidine synthase.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc, PDB

References:

1.	Ohnuma, M., Terui, Y., Tamakoshi, M., Mitome, H., Niitsu, M., Samejima, K., Kawashima, E. and Oshima, T. N¹-aminopropylagmatine, a new polyamine produced as a key intermediate in polyamine biosynthesis of an extreme thermophile, Thermus thermophilus. J. Biol. Chem. 280 (2005) 30073–30082. [DOI] [PMID: 15983049]
2.	Cacciapuoti, G., Porcelli, M., Moretti, M.A., Sorrentino, F., Concilio, L., Zappia, V., Liu, Z.J., Tempel, W., Schubot, F., Rose, J.P., Wang, B.C., Brereton, P.S., Jenney, F.E. and Adams, M.W. The first agmatine/cadaverine aminopropyl transferase: biochemical and structural characterization of an enzyme involved in polyamine biosynthesis in the hyperthermophilic archaeon Pyrococcus furiosus. J. Bacteriol. 189 (2007) 6057–6067. [DOI] [PMID: 17545282]
3.	Morimoto, N., Fukuda, W., Nakajima, N., Masuda, T., Terui, Y., Kanai, T., Oshima, T., Imanaka, T. and Fujiwara, S. Dual biosynthesis pathway for longer-chain polyamines in the hyperthermophilic archaeon Thermococcus kodakarensis. J. Bacteriol. 192 (2010) 4991–5001. [DOI] [PMID: 20675472]
4.	Ohnuma, M., Ganbe, T., Terui, Y., Niitsu, M., Sato, T., Tanaka, N., Tamakoshi, M., Samejima, K., Kumasaka, T. and Oshima, T. Crystal structures and enzymatic properties of a triamine/agmatine aminopropyltransferase from Thermus thermophilus. J. Mol. Biol. 408 (2011) 971–986. [DOI] [PMID: 21458463]

[EC 2.5.1.104 created 2013]