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Literature summary for 2.3.1.41 extracted from

  • Clough, R.; Matthis, A.L.; Barnum, S.R.; Jaworski, J.G.
    Purification and characterization of 3-ketoacyl-acyl carrier protein synthase III from spinach. A condensing enzyme utilizing acetyl-coenzyme A to initiate fatty acid synthesis (1992), J. Biol. Chem., 267, 20992-20998.
    View publication on PubMed

General Stability

General Stability Organism
dithiothreitol stabilizes Spinacia oleracea
glycerol stabilizes Spinacia oleracea
Triton X-100 stabilizes Spinacia oleracea

Inhibitors

Inhibitors Comment Organism Structure
arsenite synthase III Spinacia oleracea
N-ethylmaleimide
-
Spinacia oleracea

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
40500
-
2 * 40500, synthase III, SDS-PAGE Spinacia oleracea
63000
-
synthase III, gel filtration Spinacia oleracea

Organism

Organism UniProt Comment Textmining
Spinacia oleracea
-
synthase III
-

Purification (Commentary)

Purification (Comment) Organism
synthase III, native wild-type and recombinant from E. coli E103S 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
additional information
-
comparison of activity, recombinant and native enzyme Spinacia oleracea
7
-
purified native enzyme Spinacia oleracea

Storage Stability

Storage Stability Organism
-80°C, several weeks in the presence of 20% v/v glycerol, 0.1% Triton X-100 and dithiothreitol Spinacia oleracea

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
acetyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] synthase III, recombinant enzyme from E. coli is absolutely specific for Spinacia oleracea acetoacyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
r
saturated acyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein]
-
Spinacia oleracea 3-oxoacyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein]
-
r

Subunits

Subunits Comment Organism
dimer 2 * 40500, synthase III, SDS-PAGE Spinacia oleracea

Synonyms

Synonyms Comment Organism
3-ketoacyl-ACP synthase
-
Spinacia oleracea
KAS
-
Spinacia oleracea