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Literature summary for 2.3.1.31 extracted from

  • Wyman, A.; Paulus, H.
    Purification and properties of homoserine transacetylase from Bacillus polymyxa (1975), J. Biol. Chem., 250, 3897-3903.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Ethionine
-
Paenibacillus polymyxa
L-methionine addition of S-adenosyl-L-methionine enhances the inhibitory effect; multivalent feed-back inhibition Paenibacillus polymyxa
additional information no inhibition by Cu2+, Cd2+, Co2+, Fe2+, Hg2+, Mg2+, Mn2+, Ni2+, CoA Paenibacillus polymyxa
S-adenosyl-L-methionine addition of L-methionine enhances the inhibitory effect; multivalent feed-back inhibition Paenibacillus polymyxa
Zn2+ reversible Paenibacillus polymyxa

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.2
-
acetyl-CoA
-
Paenibacillus polymyxa
0.2
-
L-homoserine
-
Paenibacillus polymyxa
10
-
L-homoserine exchange reaction Paenibacillus polymyxa

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
37000
-
1 * 37000, SDS-PAGE Paenibacillus polymyxa
40000
-
sucrose density gradient centrifugation, PAGE Paenibacillus polymyxa

Organism

Organism UniProt Comment Textmining
Paenibacillus polymyxa
-
met-auxotroph strain M4
-

Purification (Commentary)

Purification (Comment) Organism
partial Paenibacillus polymyxa

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.17
-
-
Paenibacillus polymyxa

Storage Stability

Storage Stability Organism
-10°C, t1/2: 3 months Paenibacillus polymyxa

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
acetyl-CoA + L-homoserine
-
Paenibacillus polymyxa CoA + O-acetyl-L-homoserine
-
?
additional information catalyzes reversible L-homoserine/O-acetyl-L-homoserine exchange in the absence of acetyl-CoA Paenibacillus polymyxa ?
-
?

Subunits

Subunits Comment Organism
monomer 1 * 37000, SDS-PAGE Paenibacillus polymyxa

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
8
-
assay at Paenibacillus polymyxa

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
-
-
t1/2: 15 min Paenibacillus polymyxa
8
-
t1/2: 10 min Paenibacillus polymyxa
25
-
most rapid and irreversible inactivation Paenibacillus polymyxa

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5 8
-
Paenibacillus polymyxa

pH Range

pH Minimum pH Maximum Comment Organism
6.6 9 more than half-maximal activity over this range Paenibacillus polymyxa

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.003
-
Zn2+
-
Paenibacillus polymyxa