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Literature summary for 3.5.1.2 extracted from

  • Ali, T.; Ali, N.; Mohamed, L.
    Glutamine amidohydrolase from Penicillium politans NRC 510 (2009), Pol. J. Food Nutr. Sci., 59, 211-217.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
BaCl2 inhibition to a variable extent Penicillium palitans
CaCl2 inhibition to a variable extent Penicillium palitans
CuSO4 inhibition to a variable extent Penicillium palitans
HgCl2 inhibition to a variable extent Penicillium palitans
L-glutamate product inhibition, competitive Penicillium palitans
additional information no inhibition by 2-mercaptomethanol and iodoacetate Penicillium palitans
NaF inhibition to a variable extent Penicillium palitans
NH3 product inhibition Penicillium palitans

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
L-glutamate 7.5 mol/l, pH and temperature not specified in this publication Penicillium palitans

Metals/Ions

Metals/Ions Comment Organism Structure
NaCl 75% of the original activity in the presence of 15-30% NaCl Penicillium palitans

Organism

Organism UniProt Comment Textmining
Penicillium palitans
-
NRC 510
-

Purification (Commentary)

Purification (Comment) Organism
partially purified by heating and Sephadex G-100 gel filtration, 25% yield Penicillium palitans

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
133 U/mg Penicillium palitans

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-asparagine + H2O
-
Penicillium palitans D-aspartate + NH3
-
?
D-glutamine + H2O
-
Penicillium palitans D-glutamate + NH3
-
?
L-asparagine + H2O
-
Penicillium palitans L-aspartate + NH3
-
?
L-glutamine + H2O
-
Penicillium palitans L-glutamate + NH3
-
?
additional information no hydrolysis of nicotinamide adenine dinucleotide, nicotinamide, and acetamide under the same experimental conditions as L-glutamine as substrate Penicillium palitans ?
-
?

Synonyms

Synonyms Comment Organism
glutamine amidohydrolase
-
Penicillium palitans
glutamine deamidating enzyme
-
Penicillium palitans

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
60
-
purified enzyme Penicillium palitans

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60
-
30 min at 60°C in the absence of the substrate has no effect on the activity of the partially purified enzyme Penicillium palitans

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5 8.5 purified enzyme Penicillium palitans

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
additional information
-
L-glutamate 39.0 mol/l, pH and temperature not specified in this publication Penicillium palitans