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Literature summary for 2.3.1.41 extracted from

  • MacKintosh, R.W.; Hardie, D.G.; Slabas, A.R.
    A new assay procedure to study the induction of beta-ketoacyl-ACP synthase I and II, and the complete purification of beta-ketoacyl-ACP synthase I from developing seeds of oilseed rape (Brassica napus) (1989), Biochim. Biophys. Acta, 1002, 114-124.
No PubMed abstract available

General Stability

General Stability Organism
dithiothreitol stabilizes Brassica napus
proteinase inhibitors stabilize during purification Brassica napus
Triton X-100 facilitates extraction from oil seeds Brassica napus

Inhibitors

Inhibitors Comment Organism Structure
cerulenin no inhibition Brassica napus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
43000
-
2 * 43000, SDS-PAGE Brassica napus
86700
-
synthase I, gel filtration Brassica napus
87400
-
synthase II, gel filtration Brassica napus

Organism

Organism UniProt Comment Textmining
Brassica napus
-
synthase I and II
-

Purification (Commentary)

Purification (Comment) Organism
-
Brassica napus

Source Tissue

Source Tissue Comment Organism Textmining
seed germinating Brassica napus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Brassica napus

Storage Stability

Storage Stability Organism
-70° to -20°C, 90% loss of activity within 7 days Brassica napus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
hexadecanoyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] i.e. palmitoyl-[acyl-carrier-protein] Brassica napus 3-oxooctadecanoyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
hexanoyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein]
-
Brassica napus 3-oxooctanoyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
octadecanoyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] synthase I and II Brassica napus 3-oxoeicosanoyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?
saturated acyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein]
-
Brassica napus 3-oxoacyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
?

Subunits

Subunits Comment Organism
dimer 2 * 43000, SDS-PAGE Brassica napus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
assay at Brassica napus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.3
-
-
Brassica napus

pH Range

pH Minimum pH Maximum Comment Organism
5.6 7.2 synthase II, about half-maximal activity at pH 5.6 and pH 7.2 Brassica napus
5.9 6.8 synthase I, about half-maximal activity at pH 5.9 and pH 6.8 Brassica napus