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Literature summary for 1.1.1.277 extracted from

  • Seitz, H.U.; Gaertner, D.E.
    Enzymes in cardenolide-accumulating shoot cultures of Digitalis purpurea (1994), Plant Cell Tissue Organ Cult., 38, 337-344.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.00139
-
NADH
-
Digitalis purpurea
0.0171
-
5beta-pregnane-3,20-dione
-
Digitalis purpurea
0.3
-
NADPH
-
Digitalis purpurea

Localization

Localization Comment Organism GeneOntology No. Textmining
soluble
-
Digitalis purpurea
-
-

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3beta-hydroxy-5beta-pregnane-20-one + NADP+ Digitalis purpurea biosynthesis of cardenolides 5beta-pregnane-3,20-dione + NADPH
-
?

Organism

Organism UniProt Comment Textmining
Digitalis purpurea
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
additional information no activity in undifferentiated cell cultures Digitalis purpurea
-
shoot
-
Digitalis purpurea
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3beta-hydroxy-5beta-pregnane-20-one + NADP+ stereospecific Digitalis purpurea 5beta-pregnane-3,20-dione + NADPH
-
r
3beta-hydroxy-5beta-pregnane-20-one + NADP+ biosynthesis of cardenolides Digitalis purpurea 5beta-pregnane-3,20-dione + NADPH
-
?
5beta-pregnan-3beta-ol-20-one + NADH + H+
-
Digitalis purpurea ?
-
r

Cofactor

Cofactor Comment Organism Structure
NADH affinity to NADH is lower than to NADPH Digitalis purpurea
NADPH
-
Digitalis purpurea