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Literature summary for 1.1.1.236 extracted from

  • Keiner, R.; Kaiser, H.; Nakajima, K.; Hashimoto, T.; Draeger, B.
    Molecular cloning, expression and characterization of tropinone reductase II, an enzyme of the SDR family in Solanum tuberosum (L.) (2002), Plant Mol. Biol., 48, 299-308.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
cDNA encoding tropinone reductase II Hyoscyamus niger
cDNA homologous to pseudotropine-forming tropinone reductase isolated, recombinant protein functionally expressed in Escherichia coli BL21(DE3), transformed with pET21d vectors Solanum tuberosum

Crystallization (Commentary)

Crystallization (Comment) Organism
-
Solanum tuberosum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.025
-
Nortropinone
-
Solanum tuberosum
0.033
-
tropinone pH 6.4 Solanum tuberosum
0.052
-
tropinone pH 7.6 Solanum tuberosum
0.111
-
tropinone pH 5.0 Solanum tuberosum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
tropinone + NADPH + H+ Solanum tuberosum
-
pseudotropine + NADP+
-
?
tropinone + NADPH + H+ Datura stramonium
-
pseudotropine + NADP+
-
?
tropinone + NADPH + H+ Atropa belladonna
-
pseudotropine + NADP+
-
?
tropinone + NADPH + H+ Hyoscyamus niger
-
pseudotropine + NADP+
-
?

Organism

Organism UniProt Comment Textmining
Atropa belladonna
-
-
-
Datura stramonium
-
-
-
Hyoscyamus niger
-
-
-
Solanum tuberosum
-
potato, cvs. Liu and Desiree
-

Purification (Commentary)

Purification (Comment) Organism
-
Hyoscyamus niger
recombinant StTRII L1 Solanum tuberosum

Source Tissue

Source Tissue Comment Organism Textmining
dormant eye
-
Solanum tuberosum
-
flower
-
Solanum tuberosum
-
flower
-
Atropa belladonna
-
fruit
-
Solanum tuberosum
-
leaf
-
Solanum tuberosum
-
leaf
-
Atropa belladonna
-
pith
-
Solanum tuberosum
-
root
-
Solanum tuberosum
-
root
-
Datura stramonium
-
root
-
Atropa belladonna
-
root mostly localized to the endodermis, less abundant in the pericycle and cortex Hyoscyamus niger
-
sprout
-
Solanum tuberosum
-
stem
-
Solanum tuberosum
-
stem
-
Datura stramonium
-
stem
-
Atropa belladonna
-
stolon
-
Solanum tuberosum
-
tuber
-
Solanum tuberosum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
nortropinone + NADPH
-
Solanum tuberosum ? + NADP+
-
?
tropinone + NADPH + H+
-
Solanum tuberosum pseudotropine + NADP+
-
?
tropinone + NADPH + H+
-
Solanum tuberosum pseudotropine + NADP+
-
ir
tropinone + NADPH + H+
-
Datura stramonium pseudotropine + NADP+
-
?
tropinone + NADPH + H+
-
Datura stramonium pseudotropine + NADP+
-
ir
tropinone + NADPH + H+
-
Atropa belladonna pseudotropine + NADP+
-
?
tropinone + NADPH + H+
-
Hyoscyamus niger pseudotropine + NADP+
-
?

Cofactor

Cofactor Comment Organism Structure
NADPH
-
Solanum tuberosum
NADPH
-
Datura stramonium
NADPH
-
Hyoscyamus niger