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Literature summary for 5.1.1.18 extracted from

  • Foltyn, V.N.; Bendikov, I.; De Miranda, J.; Panizzutti, R.; Dumin, E.; Shleper, M.; Li, P.; Toney, M.D.; Kartvelishvily, E.; Wolosker, H.
    Serine racemase modulates intracellular D-serine levels through an alpha,beta-elimination activity (2005), J. Biol. Chem., 280, 1754-1763.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
ATP
-
Mus musculus

Protein Variants

Protein Variants Comment Organism
H152S ratio of elimination reaction to racemization is 1.4 compared to 3.7 in wild-type Mus musculus
N154F ratio of elimination reaction to racemization is 0.33 compared to 3.7 in wild-type Mus musculus
P153S ratio of elimination reaction to racemization is 0.24 compared to 3.7 in wild-type Mus musculus
Q155D ratio of elimination reaction to racemization is 0.25 compared to 3.7 in wild-type Mus musculus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
8
-
D-serine wild-type, racemization, pH 7.4, 37°C Mus musculus
8.2
-
D-serine wild-type, racemization, presence of ATP, pH 7.4, 37°C Mus musculus
9
-
L-serine wild-type, racemization, pH 7.4, 37°C Mus musculus
9
-
L-serine wild-type, racemization, presence of ATP, pH 7.4, 37°C Mus musculus
9.2
-
D-serine mutant Q155D, racemization, pH 7.4, 37°C Mus musculus
9.2
-
D-serine mutant Q155D, racemization, presence of ATP, pH 7.4, 37°C Mus musculus
10
-
L-serine mutant Q155D, racemization, pH 7.4, 37°C Mus musculus
10.5
-
L-serine mutant Q155D, racemization, presence of ATP, pH 7.4, 37°C Mus musculus

Organism

Organism UniProt Comment Textmining
Mus musculus
-
bifunctional enzyme, racemization of serine and alpha,beta-elimination of L-serine
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-serine alpha,beta-elimination reaction Mus musculus pyruvate + NH3
-
?
D-serine racemization reaction Mus musculus L-serine
-
r
L-serine alpha,beta-elimination reaction Mus musculus pyruvate + NH3
-
?
L-serine racemization reaction Mus musculus D-serine
-
r
L-threonine alpha,beta-elimination reaction Mus musculus 2-oxobutanoate + NH3
-
?
additional information ratio of elimination reaction/racemization reaction for substrate L-serine is 3.7 Mus musculus ?
-
?

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
0.004
-
D-serine wild-type, pH 7.4, 37°C Mus musculus
0.015
-
D-serine mutant Q155D, racemization, pH 7.4, 37°C Mus musculus
0.02
-
L-serine wild-type, racemization, pH 7.4, 37°C Mus musculus
0.028
-
D-serine wild-type, racemization, presence of ATP, pH 7.4, 37°C Mus musculus
0.042
-
L-serine wild-type, racemization, presence of ATP, pH 7.4, 37°C Mus musculus
0.045
-
L-serine mutant Q155D, racemization, pH 7.4, 37°C Mus musculus
0.11
-
D-serine mutant Q155D, racemization, presence of ATP, pH 7.4, 37°C Mus musculus
0.23
-
L-serine mutant Q155D, presence of ATP, pH 7.4, 37°C Mus musculus