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Literature summary for 2.5.1.22 extracted from

  • Kajander, E.O.; Kauppinen, L.I.; Pajula, R.L.; Karkola, K.; Eloranta, T.O.
    Purification and partial characterization of human polyamine synthases (1989), Biochem. J., 259, 879-886.
    View publication on PubMedView publication on EuropePMC

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.001
-
S-adenosylmethioninamine
-
Homo sapiens
0.2
-
spermidine placenta Homo sapiens

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol
-
Homo sapiens 5829
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
45000
-
2 * 45000, kidney, SDS-PAGE Homo sapiens
78000
-
kidney, pore-gradient electrophoresis Homo sapiens

Organism

Organism UniProt Comment Textmining
Homo sapiens
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Homo sapiens

Source Tissue

Source Tissue Comment Organism Textmining
brain
-
Homo sapiens
-
kidney
-
Homo sapiens
-
additional information tissue distribution Homo sapiens
-
placenta
-
Homo sapiens
-
spleen
-
Homo sapiens
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.455
-
placenta Homo sapiens

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
S-adenosyl-L-methioninamine + spermidine
-
Homo sapiens 5'-methylthioadenosine + spermine
-
?

Subunits

Subunits Comment Organism
dimer 2 * 45000, kidney, SDS-PAGE Homo sapiens

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
-
Homo sapiens