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Literature summary for 2.6.1.B23 extracted from

  • Wenger, A.; Schmidt, R.S.; Portmann, R.; Roetschi, A.; Eugster, E.; Weisskopf, L.; Irmler, S.
    Identification of a species-specific aminotransferase in Pediococcus acidilactici capable of forming alpha-aminobutyrate (2020), AMB Express, 10, 100 .
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

Cloned (Comment) Organism
gene aat, DNA and amino acid sequence determination and analysis, sequence comparisons, recombinant expression of His-tagged enzyme in Escherichia coli Pediococcus acidilactici

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2-aminobutanoate + 2-oxoglutarate Pediococcus acidilactici
-
succinate semialdehyde + L-glutamate
-
?
2-aminobutanoate + 2-oxoglutarate Pediococcus acidilactici FAM18098
-
succinate semialdehyde + L-glutamate
-
?

Organism

Organism UniProt Comment Textmining
Pediococcus acidilactici
-
-
-
Pediococcus acidilactici FAM18098
-
-
-

Purification (Commentary)

Purification (Comment) Organism
recombinant His-tagged enzyme from Escherichia coli by nickel affinity chromatography Pediococcus acidilactici

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2-aminobutanoate + 2-oxobutyrate high activity in the reverse reaction Pediococcus acidilactici succinate semialdehyde + ?
-
r
2-aminobutanoate + 2-oxoglutarate
-
Pediococcus acidilactici succinate semialdehyde + L-glutamate
-
?
2-aminobutanoate + 2-oxoglutarate high activity Pediococcus acidilactici succinate semialdehyde + L-glutamate
-
r
2-aminobutanoate + 2-oxoglutarate
-
Pediococcus acidilactici FAM18098 succinate semialdehyde + L-glutamate
-
?
L-alanine + 2-oxoglutarate
-
Pediococcus acidilactici pyruvate + L-glutamate
-
r
L-alanine + 2-oxoglutarate
-
Pediococcus acidilactici FAM18098 pyruvate + L-glutamate
-
r
L-cysteine + 2-oxoglutarate
-
Pediococcus acidilactici mercaptopyruvate + L-glutamate
-
r
L-leucine + 2-oxoglutarate best substrate Pediococcus acidilactici 4-methyl-2-oxopentanoate + L-glutamate
-
r
L-leucine + 2-oxoglutarate best substrate Pediococcus acidilactici FAM18098 4-methyl-2-oxopentanoate + L-glutamate
-
r
L-methionine + 2-oxoglutarate high activity Pediococcus acidilactici 4-(methylsulfanyl)-2-oxobutanoate + L-glutamate
-
r
L-phenylalanine + 2-oxoglutarate
-
Pediococcus acidilactici phenylpyruvate + L-glutamate
-
r
L-phenylalanine + 2-oxoglutarate
-
Pediococcus acidilactici FAM18098 phenylpyruvate + L-glutamate
-
r
additional information substrate specificity, overview. The transaminase catalyzes the reversible transfer of the amino group from L-Leu, L-Met, 2-aminobutanoate (AABA), L-Ala, L-Cys, and L-Phe to the amino group acceptor 2-oxoglutarate. 2-Oxobutyrate can replace 2-oxoglutarate as an amino group acceptor. In this case, AABA is produced at significantly higher levels than glutamate. No activity with L-Ser, L-Asp, L-Ile, L-Val, and L-Thr Pediococcus acidilactici ?
-
-
additional information substrate specificity, overview. The transaminase catalyzes the reversible transfer of the amino group from L-Leu, L-Met, 2-aminobutanoate (AABA), L-Ala, L-Cys, and L-Phe to the amino group acceptor 2-oxoglutarate. 2-Oxobutyrate can replace 2-oxoglutarate as an amino group acceptor. In this case, AABA is produced at significantly higher levels than glutamate. No activity with L-Ser, L-Asp, L-Ile, L-Val, and L-Thr Pediococcus acidilactici FAM18098 ?
-
-

Synonyms

Synonyms Comment Organism
AAT
-
Pediococcus acidilactici

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
assay at Pediococcus acidilactici

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
assay at Pediococcus acidilactici

Cofactor

Cofactor Comment Organism Structure
pyridoxal 5'-phosphate
-
Pediococcus acidilactici

General Information

General Information Comment Organism
physiological function Pediococcus acidilactici possesses a species-specific aminotransferase. The aminotransferase catalyzes the reversible transfer of an amino group to 2-oxo butyrate to form 2-aminobutyrate. The aminotransferase uses a variety of amino acids as amino group donor. During cheese ripening, the bacterial Pediococcus acidilactici strains all produce the non-proteinogenic amino acid, alpha-aminobutyrate (AABA) Pediococcus acidilactici