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Literature summary for 2.3.1.74 extracted from

  • Sutfeld, R.; Kehrel, B.; Wiermann, R.
    Characterization and development and localization of Flavanone synthase in tulip anthers (1978), Z. Naturforsch. C, 33c, 841-846.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
2-mercaptoethanol activation Tulipa hybrid cultivar

Inhibitors

Inhibitors Comment Organism Structure
2-mercaptoethanol above 5 mM Tulipa hybrid cultivar
Ca2+ 10-20% decrease at 1 mM Tulipa hybrid cultivar
CoA total inhibition at 0.25 mM Tulipa hybrid cultivar
Cu2+ 50% decrease above 1 mM Tulipa hybrid cultivar
dithiothreitol 60% inhibition Tulipa hybrid cultivar
Mg2+ 10-20% decrease at 1 mM Tulipa hybrid cultivar
naringenin total inhibition at 0.4 mM Tulipa hybrid cultivar
p-chloromercuribenzoate 50% inhibition at 2.5 mM Tulipa hybrid cultivar
Zn2+ 50% decrease above 1 mM Tulipa hybrid cultivar

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0016
-
caffeoyl-CoA
-
Tulipa hybrid cultivar
0.0017
-
4-coumaroyl-CoA
-
Tulipa hybrid cultivar
0.0025
-
feruloyl-CoA
-
Tulipa hybrid cultivar

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
55000
-
gel filtration, gradient centrifugation Tulipa hybrid cultivar

Organism

Organism UniProt Comment Textmining
Tulipa hybrid cultivar
-
cv. Apeldoorn
-

Purification (Commentary)

Purification (Comment) Organism
partial Tulipa hybrid cultivar

Source Tissue

Source Tissue Comment Organism Textmining
anther
-
Tulipa hybrid cultivar
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Tulipa hybrid cultivar

Storage Stability

Storage Stability Organism
-20°C, 30% initial loss of activity, remaining activity stable for 14 d Tulipa hybrid cultivar

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
caffeoyl-CoA + 3 malonyl-CoA
-
Tulipa hybrid cultivar eriodictyol + 4 CoA + 3 CO2
-
?
ferulyl-CoA + malonyl-CoA
-
Tulipa hybrid cultivar homoeriodictyol + CoA + CO2
-
?
malonyl-CoA + 4-coumaroyl-CoA
-
Tulipa hybrid cultivar naringenin chalcone + CoA + CO2
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
-
Tulipa hybrid cultivar

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
20 50 less than 50% of maximal activity above and below Tulipa hybrid cultivar
20 60 50% activity at 20°C, 50°C and 60°C Tulipa hybrid cultivar

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
25
-
50% inactivation after 90 min Tulipa hybrid cultivar

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8
-
-
Tulipa hybrid cultivar