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Literature summary for 4.1.1.25 extracted from

  • Zhang, K.; Ni, Y.
    Tyrosine decarboxylase from Lactobacillus brevis: soluble expression and characterization (2014), Protein Expr. Purif., 94, 33-39.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expression n Escherichia coli Levilactobacillus brevis

Inhibitors

Inhibitors Comment Organism Structure
Cu2+ 1 mM, 9.2% residual activity Levilactobacillus brevis
Fe2+ 1 mM, 5.7% residual activity Levilactobacillus brevis
Na2HPO4 1 mM, 67.2% residual activity Levilactobacillus brevis
Ni2+ 1 mM, 64.3% residual activity Levilactobacillus brevis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.59
-
L-tyrosine pH 5.0, 40°C Levilactobacillus brevis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
70000
-
2 * 70000, SDS-PAGE Levilactobacillus brevis
140000
-
gel filtration Levilactobacillus brevis

Organism

Organism UniProt Comment Textmining
Levilactobacillus brevis J7GQ11
-
-
Levilactobacillus brevis CGMCC 1.2028 J7GQ11
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
133.5
-
pH 5.0, 40°C Levilactobacillus brevis

Storage Stability

Storage Stability Organism
4°C, 25 mM Tris–HCl, pH 7.4, 150 mM NaCl, 4 weeks, over 80% of activity Levilactobacillus brevis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-Dopa 43.9% of the activity with L-tyrosine Levilactobacillus brevis dopamine + CO2
-
?
L-Dopa 43.9% of the activity with L-tyrosine Levilactobacillus brevis CGMCC 1.2028 dopamine + CO2
-
?
L-Tyrosine
-
Levilactobacillus brevis Tyramine + CO2
-
?
L-Tyrosine
-
Levilactobacillus brevis CGMCC 1.2028 Tyramine + CO2
-
?
additional information no substrates: L-phenylalanine, L-tryptophan Levilactobacillus brevis ?
-
?
additional information no substrates: L-phenylalanine, L-tryptophan Levilactobacillus brevis CGMCC 1.2028 ?
-
?

Subunits

Subunits Comment Organism
dimer 2 * 70000, SDS-PAGE Levilactobacillus brevis

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
50
-
-
Levilactobacillus brevis

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
70
-
8.5% of maximum activity Levilactobacillus brevis

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
50
-
1 h, 14% residual activity Levilactobacillus brevis

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
343
-
L-tyrosine pH 5.0, 40°C Levilactobacillus brevis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
-
Levilactobacillus brevis

pH Range

pH Minimum pH Maximum Comment Organism
3.5
-
inactive below Levilactobacillus brevis
5 8 at least 95% of maximum activity Levilactobacillus brevis
9
-
inactive above Levilactobacillus brevis

pH Stability

pH Stability pH Stability Maximum Comment Organism
7.4
-
7 days, 92% residual activity Levilactobacillus brevis

Cofactor

Cofactor Comment Organism Structure
pyridoxal 5'-phosphate
-
Levilactobacillus brevis

pI Value

Organism Comment pI Value Maximum pI Value
Levilactobacillus brevis isoelectric focusing
-
5.5

kcat/KM [mM/s]

kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
583
-
L-tyrosine pH 5.0, 40°C Levilactobacillus brevis