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Literature summary for 2.3.1.41 extracted from

  • Shimakata, T.; Stumpf, P.L.
    Purification and characterization of beta-ketoacyl-[acyl-carrier-protein] synthetase I from Spinacia oleracea leaves (1983), Arch. Biochem. Biophys., 220, 39-45.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
arsenite weak at 1 mM Spinacia oleracea
cerulenin antibiotic, protection by hexanoyl-[acyl-carrier-protein], decanoyl-[acyl-carrier-protein], and tetradecanoyl-[acyl-carrier-protein] Spinacia oleracea
N-ethylmaleimide 5 mM Spinacia oleracea
p-chloromercuribenzoate complete inhibition at 1 mM Spinacia oleracea

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information
-
Spinacia oleracea
0.004
-
malonyl-CoA in presence of [acyl-carrier-protein] Spinacia oleracea
0.0075
-
hexanoyl-[acyl-carrier protein]
-
Spinacia oleracea
0.0091
-
tetradecanoyl-[acyl-carrier protein]
-
Spinacia oleracea
0.016
-
malonyl-CoA without [acyl-carrier-protein] Spinacia oleracea

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
56000
-
synthase I, gel filtration Spinacia oleracea

Organism

Organism UniProt Comment Textmining
Spinacia oleracea
-
synthase I and II
-

Purification (Commentary)

Purification (Comment) Organism
synthase I Spinacia oleracea

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Spinacia oleracea
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.0083
-
purified enzyme Spinacia oleracea

Storage Stability

Storage Stability Organism
-20°C, t1/2: 1 month Spinacia oleracea

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
decanoyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein]
-
Spinacia oleracea dodecanoyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
hexadecanoyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] poor substrate Spinacia oleracea 3-oxooctadecanoyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
hexadecanoyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] i.e. palmitoyl-[acyl-carrier-protein] Spinacia oleracea 3-oxooctadecanoyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
hexanoyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] best substrate, synthase I Spinacia oleracea 3-oxooctanoyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
malonyl-CoA + decanoyl-[acyl carrier protein]
-
Spinacia oleracea ?
-
?
saturated acyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] substrate specificity, overview Spinacia oleracea 3-oxoacyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
saturated acyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] not octodecanoyl-[acyl-carrier-protein], i.e stearoyl-[acyl-carrier-protein] Spinacia oleracea 3-oxoacyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
tetradecanoyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein]
-
Spinacia oleracea 3-oxohexadecanoyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
assay at Spinacia oleracea
37
-
assay at Spinacia oleracea

pH Range

pH Minimum pH Maximum Comment Organism
6 8.2
-
Spinacia oleracea