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Literature summary for 6.3.5.5 extracted from

  • Terjesen, B.F.; Ronnestad, I.; Norberg, B.; Anderson, P.M.
    Detection and basic properties of carbamoyl phosphate synthetase III during teleost ontogeny: a case study in the Atlantic halibut (Hippoglossus hippoglossus L.) (2000), Comp. Biochem. Physiol. B, 126, 521-535.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
N-acetyl-L-glutamate
-
Galeus melastomus
N-acetyl-L-glutamate activation of CPS III, not CPS II Hippoglossus hippoglossus

Inhibitors

Inhibitors Comment Organism Structure
additional information not: UTP Galeus melastomus
UTP when L-glutamine is the substrate: 94% inhibition of enzyme activity peak 1: CPS II, 6% inhibition of enzyme activity peak 2: CPS III, when NH4Cl is the substrate: 100% inhibition of enzyme activity peak 1: CPS II, 46% inhibition of enzyme activity peak 2: CPS III Hippoglossus hippoglossus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
160000 170000 gel filtration, CPS III Hippoglossus hippoglossus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2 ATP + L-Gln + HCO3- Hippoglossus hippoglossus enzyme catalyses the first step of urea cycle in fish 2 ADP + phosphate + L-Glu + carbamoyl phosphate
-
?

Organism

Organism UniProt Comment Textmining
Galeus melastomus
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Blackmous catshark
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Hippoglossus hippoglossus
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atlantic halibut, yolk-sac larvae and adult, two enzymes: CPS II and CPS III
-

Source Tissue

Source Tissue Comment Organism Textmining

Storage Stability

Storage Stability Organism
-80°C, stable, 6 months Hippoglossus hippoglossus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2 ATP + L-Gln + HCO3-
-
Hippoglossus hippoglossus 2 ADP + phosphate + L-Glu + carbamoyl phosphate
-
?
2 ATP + L-Gln + HCO3-
-
Galeus melastomus 2 ADP + phosphate + L-Glu + carbamoyl phosphate
-
?
2 ATP + L-Gln + HCO3- enzyme catalyses the first step of urea cycle in fish Hippoglossus hippoglossus 2 ADP + phosphate + L-Glu + carbamoyl phosphate
-
?
2 ATP + NH4+ + HCO3- CPS III shows low activity in comparison to L-glutamine Hippoglossus hippoglossus 2 ADP + phosphate + carbamoyl phosphate
-
?

Synonyms

Synonyms Comment Organism
carbamoyl phosphate synthetase III
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Hippoglossus hippoglossus
carbamoyl phosphate synthetase III
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Galeus melastomus
CPS III
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Hippoglossus hippoglossus
CPS III
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Galeus melastomus