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Literature summary for 4.1.99.1 extracted from

  • Sasaki-Imamura, T.; Yoshida, Y.; Suwabe, K.; Yoshimura, F.; Kato, H.
    Molecular basis of indole production catalyzed by tryptophanase in the genus Prevotella (2011), FEMS Microbiol. Lett., 322, 51-59.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed as glutathione S-transferase fusion protein Prevotella intermedia

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.23
-
L-tryptophan pH 7.5, 37°C Prevotella intermedia
0.87
-
S-methyl-L-cysteine pH 7.6, 37°C Prevotella intermedia
3.3
-
S-ethyl-L-cysteine pH 7.6, 37°C Prevotella intermedia

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
51000
-
2 * 51000, SDS-PAGE, gel filtration Prevotella intermedia
107800
-
gel filtration Prevotella intermedia

Organism

Organism UniProt Comment Textmining
Prevotella intermedia E9RK37
-
-
Prevotella intermedia ATCC 25611 E9RK37
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Prevotella intermedia

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-tryptophan + H2O
-
Prevotella intermedia indole + pyruvate + NH3
-
?
L-tryptophan + H2O
-
Prevotella intermedia ATCC 25611 indole + pyruvate + NH3
-
?
S-ethyl-L-cysteine + H2O
-
Prevotella intermedia ethanethiol + pyruvate + NH4+
-
?
S-ethyl-L-cysteine + H2O
-
Prevotella intermedia ATCC 25611 ethanethiol + pyruvate + NH4+
-
?
S-methyl-L-cysteine + H2O
-
Prevotella intermedia methanethiol + pyruvate + NH4+
-
?
S-methyl-L-cysteine + H2O
-
Prevotella intermedia ATCC 25611 methanethiol + pyruvate + NH4+
-
?

Subunits

Subunits Comment Organism
homodimer 2 * 51000, SDS-PAGE, gel filtration Prevotella intermedia

Synonyms

Synonyms Comment Organism
TnaA
-
Prevotella intermedia
tryptophanase
-
Prevotella intermedia

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
0.2
-
S-methyl-L-cysteine pH 7.6, 37°C Prevotella intermedia
0.45
-
L-tryptophan pH 7.5, 37°C Prevotella intermedia
1.79
-
S-ethyl-L-cysteine pH 7.6, 37°C Prevotella intermedia

kcat/KM [mM/s]

kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
0.23
-
S-methyl-L-cysteine pH 7.6, 37°C Prevotella intermedia
0.6
-
S-ethyl-L-cysteine pH 7.6, 37°C Prevotella intermedia
1.96
-
L-tryptophan pH 77.5, 37°C Prevotella intermedia