Information on EC 4.1.2.26 - phenylserine aldolase

for references in articles please use BRENDA:EC4.1.2.26
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The expected taxonomic range for this enzyme is: Eukaryota, Bacteria

EC NUMBER
COMMENTARY hide
4.1.2.26
-
RECOMMENDED NAME
GeneOntology No.
phenylserine aldolase
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
L-threo-3-Phenylserine = glycine + benzaldehyde
show the reaction diagram
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-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
condensation
-
-
-
-
elimination
-
-
of an aldehyde, C-C bond cleavage
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SYSTEMATIC NAME
IUBMB Comments
L-threo-3-phenylserine benzaldehyde-lyase (glycine-forming)
A pyridoxal-phosphate protein.
CAS REGISTRY NUMBER
COMMENTARY hide
37290-60-1
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ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
cow
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-
Manually annotated by BRENDA team
enzyme is a low-specificity L-threonine aldolase, EC 4.1.2.48, and additionally cleaves L-threo-phenylserine
UniProt
Manually annotated by BRENDA team
enzyme is a low-specificity L-threonine aldolase, EC 4.1.2.48, and additionally cleaves L-threo-phenylserine
UniProt
Manually annotated by BRENDA team
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-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
strain 24-1
Q59IT3
SwissProt
Manually annotated by BRENDA team
strain 24-1
Q59IT3
SwissProt
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
glycine + benzaldehyde
L-threo-3-phenylserine + L-erythro-3-phenylserine
show the reaction diagram
L-allo-Thr
glycine + acetaldehyde
show the reaction diagram
Q59IT3;
-
-
-
?
L-erythro-3-phenylserine
glycine + benzaldehyde
show the reaction diagram
Q59IT3;
no activity with D-erythro-3-phenylserine
-
-
r
L-Thr
glycine + acetaldehyde
show the reaction diagram
L-threo-3-phenylserine
glycine + benzaldehyde
show the reaction diagram
L-threo-phenylserine
glycine + benzaldehyde
show the reaction diagram
additional information
?
-
NATURAL SUBSTRATES
NATURAL PRODUCTS
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
additional information
?
-
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
pyridoxal 5'-phosphate
INHIBITORS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
3-(ethylamino)phenol
Q59IT3;
competitive against DL-threo-3-phenylserine
D-cycloserine
Q59IT3;
1 mM, 98% inhibition
DL-3-hydroxy-n-butyrate
Q59IT3;
20 mM, 30% inhibition
DL-3-hydroxynorvaline
Q59IT3;
20 mM, 49% inhibition
DL-3-hydroxyphenylethylamine
Q59IT3;
20 mM, 79% inhibition
hydroxylamine
L-3-phenyllactate
Q59IT3;
10 mM, 39% inhibition
p-chloromercuribenzoate
-
-
phenylhydrazine
Q59IT3;
1 mM, 52% inhibition
phosphate
-
-
Semicarbazide
Q59IT3;
1 mM, 97% inhibition
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
22
L-allo-Thr
Q59IT3;
pH 8.5, 30°C
4.6
L-erythro-3-phenylserine
Q59IT3;
pH 8.5, 30°C
29
L-Thr
Q59IT3;
pH 8.5, 30°C
1.3
L-threo-3-phenylserine
Q59IT3;
pH 8.5, 30°C
0.035 - 2.8
L-threo-phenylserine
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
1300
L-allo-Thr
Q59IT3;
pH 8.5, 30°C
7900
L-erythro-3-phenylserine
Q59IT3;
pH 8.5, 30°C
580
L-Thr
Q59IT3;
pH 8.5, 30°C
2300
L-threo-3-phenylserine
Q59IT3;
pH 8.5, 30°C
0.1 - 67.4
L-threo-phenylserine
kcat/KM VALUE [1/mMs-1]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.42 - 1900
L-threo-phenylserine
Ki VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
4.1
3-(ethylamino)phenol
Q59IT3;
-
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
4.3
Q59IT3;
reaction with glycine and benzaldehyde
300
Q59IT3;
cleavage of L-threo-3-phenylserine
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
7.5
Q59IT3;
reaction with glycine and benzyldehyde
7.6
-
-
8.5
Q59IT3;
reaction with L-threo-3-phenylserine
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
55
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-
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
additional information
PDB
SCOP
CATH
UNIPROT
ORGANISM
Q59IT3
Pseudomonas putida;
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
37400
Q59IT3;
6 * 37400, calculation from nucleotide sequence
38000
Q59IT3;
6 * 38000, SDS-PAGE
210000
Q59IT3;
gel filtration
SUBUNITS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
hexamer
pH STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
6.5 - 9.5
Q59IT3;
30°C, 10 min, stable
663708
STORAGE STABILITY
ORGANISM
UNIPROT
LITERATURE
-20°C, pH 7.2, 10 mM TES buffer, 0.01% 2-mercaptoethanol, 0.05 mM pyridoxal 5'-phosphate, 30% glycerol, stable for several months
Q59IT3;
Purification/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
recombinant
Q59IT3;
Cloned/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
overexpression in Escherichia coli
Q59IT3;
ENGINEERING
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE