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Literature summary for 6.3.5.5 extracted from

  • Saha, N.; Das, L.; Dutta, S.
    Types of carbamyl phosphate synthetases and subcellular localization of urea cycle and related enzymes in air-breathing walking catfish, Clarias batrachus (1999), J. Exp. Zool., 283, 121-130.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
N-acetyl-L-glutamate only CPS III Clarias batrachus

Inhibitors

Inhibitors Comment Organism Structure
UMP only CPS II Clarias batrachus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.46
-
L-glutamine pH 7.5, 30°C Clarias batrachus
2.2
-
ammonia pH 7.5, 30°C Clarias batrachus

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol CPS II Clarias batrachus 5829
-
mitochondrion CPS III Clarias batrachus 5739
-

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2 ATP + L-Gln + HCO3- Clarias batrachus enzyme is a key enzyme in the pyrimidine nucleotide and arginine biosynthetic pathways 2 ADP + phosphate + L-Glu + carbamoyl phosphate
-
?

Organism

Organism UniProt Comment Textmining
Clarias batrachus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
recombinant wild-type and mutant enzymes Clarias batrachus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2 ATP + L-Gln + HCO3-
-
Clarias batrachus 2 ADP + phosphate + L-Glu + carbamoyl phosphate
-
?
2 ATP + L-Gln + HCO3- enzyme is a key enzyme in the pyrimidine nucleotide and arginine biosynthetic pathways Clarias batrachus 2 ADP + phosphate + L-Glu + carbamoyl phosphate
-
?
2 ATP + NH4+ + HCO3-
-
Clarias batrachus 2 ADP + phosphate + carbamoyl phosphate
-
?

Synonyms

Synonyms Comment Organism
CPS II (glutamine-dependent)
-
Clarias batrachus
CPS III (glutamine- and N-acetyl-L-glutamine-dependent)
-
Clarias batrachus