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EC 2.5.1.128 Details

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EC number

2.5.1.128

Accepted name

N⁴-bis(aminopropyl)spermidine synthase

Reaction

2 S-adenosyl 3-(methylsulfanyl)propylamine + spermidine = 2 S-methyl-5′-thioadenosine + N⁴-bis(aminopropyl)spermidine (overall reaction);; (1a) S-adenosyl 3-(methylsulfanyl)propylamine + spermidine = S-methyl-5′-thioadenosine + N⁴-aminopropylspermidine;; (1b) S-adenosyl 3-(methylsulfanyl)propylamine + N⁴-aminopropylspermidine = S-methyl-5′-thioadenosine + N⁴-bis(aminopropyl)spermidine

Systematic name

S-adenosyl 3-(methylsulfanyl)propylamine:spermidine 3-aminopropyltransferase [N⁴-bis(aminopropyl)spermidine synthesizing]

Comment

The enzyme, characterized from the thermophilic archaeon Thermococcus kodakarensis, synthesizes the branched-chain polyamine N⁴-bis(aminopropyl)spermidine, which is required for cell growth at high-temperature. When spermine is used as substrate, the enzyme forms N⁴-aminopropylspermine.

History

created 2014

EC Tree

1 Oxidoreductases

1.1 Acting on the CH-OH group of donors

1.2 Acting on the aldehyde or oxo group of donors

1.3 Acting on the CH-CH group of donors

1.3.1 With NAD⁺ or NADP⁺ as acceptor

1.3.2 With a cytochrome as acceptor

1.3.3 With oxygen as acceptor

1.3.4 With a disulfide as acceptor

1.3.5 With a quinone or related compound as acceptor

1.3.7 With an iron-sulfur protein as acceptor

1.3.8 With a flavin as acceptor

1.3.8.1 short-chain acyl-CoA dehydrogenase

1.3.8.2 4,4′-diapophytoene desaturase (4,4′-diapolycopene-forming)

1.3.8.3 (R)-benzylsuccinyl-CoA dehydrogenase

1.3.8.4 isovaleryl-CoA dehydrogenase

1.3.8.5 short-chain 2-methylacyl-CoA dehydrogenase

1.3.8.6 glutaryl-CoA dehydrogenase (ETF)

1.3.8.7 medium-chain acyl-CoA dehydrogenase

1.3.8.8 long-chain acyl-CoA dehydrogenase

1.3.8.9 very-long-chain acyl-CoA dehydrogenase

1.3.8.10 cyclohex-1-ene-1-carbonyl-CoA dehydrogenase

1.3.8.11 cyclohexane-1-carbonyl-CoA dehydrogenase (electron-transfer flavoprotein)

1.3.8.12 (2S)-methylsuccinyl-CoA dehydrogenase

1.3.8.13 crotonobetainyl-CoA reductase

1.3.8.14 L-prolyl-[peptidyl-carrier protein] dehydrogenase

1.3.8.15 3-(aryl)acrylate reductase

1.3.8.16 2-amino-4-deoxychorismate dehydrogenase

1.3.8.17 dehydro coenzyme F₄₂₀ reductase

1.3.98 With other, known, physiological acceptors

1.3.99 With unknown physiological acceptors

1.4 Acting on the CH-NH₂ group of donors

1.5 Acting on the CH-NH group of donors

1.6 Acting on NADH or NADPH

1.7 Acting on other nitrogenous compounds as donors

1.8 Acting on a sulfur group of donors

1.9 Acting on a heme group of donors

1.10 Acting on diphenols and related substances as donors

1.11 Acting on a peroxide as acceptor

1.12 Acting on hydrogen as donor

1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)

1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen

1.15 Acting on superoxide as acceptor

1.15.1 Acting on superoxide as acceptor (only sub-subclass identified to date)

1.16 Oxidizing metal ions

1.17 Acting on CH or CH₂ groups

1.18 Acting on iron-sulfur proteins as donors

1.19 Acting on reduced flavodoxin as donor

1.20 Acting on phosphorus or arsenic in donors

1.21 Catalysing the reaction X-H + Y-H = X-Y

1.21.1 With NAD⁺ or NADP⁺ as acceptor

1.21.3 With oxygen as acceptor

1.21.4 With a disulfide as acceptor

1.21.98 With other, known, physiological acceptors

1.21.99 With unknown physiological acceptors

1.22 Acting on halogen in donors

1.23 Reducing C-O-C group as acceptor

1.97 Other oxidoreductases

1.97.1 Sole sub-subclass for oxidoreductases that do not belong in the other subclasses

1.98 Enzymes using H₂ as reductant (deleted subclass)

1.99 Other enzymes using O₂ as oxidant (deleted subclass)

3.1 Acting on ester bonds

3.2 Glycosylases

3.3 Acting on ether bonds

3.4 Acting on peptide bonds (peptidases)

3.5 Acting on carbon-nitrogen bonds, other than peptide bonds

3.6 Acting on acid anhydrides

3.7 Acting on carbon-carbon bonds

3.8 Acting on halide bonds

3.9 Acting on phosphorus-nitrogen bonds

3.10 Acting on sulfur-nitrogen bonds

3.11 Acting on carbon-phosphorus bonds

3.12 Acting on sulfur-sulfur bonds

3.13 Acting on carbon-sulfur bonds

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Release 2023.1 (January 2023)