Purification and Characterization of Carbamoyl‐Phosphate Synthetase from the Deep‐Sea Hyperthermophilic Archaebacterium Pyrococcus abyssi
Open Access
- 1 February 1996
- journal article
- Published by Wiley in European Journal of Biochemistry
- Vol. 236 (1), 189-199
- https://doi.org/10.1111/j.1432-1033.1996.00189.x
Abstract
Carbamoyl-phosphate synthetase was purified from the deep-sea hyperthermophilic archaebacterium Pyrococcus abyssi. This enzyme appears to be monomeric and uses ammonium salts as nitrogen donor. Its activity is inhibited by some nucleotides that compete with ATP. In contrast with the carbamoyl-phosphate synthetases investigated so far, this enzyme is very resistant to high temperature. Its low molecular mass (46.6 kDa) and its catalytic properties suggest that the gene coding for this enzyme is a previously postulated ancestor whose duplication gave the genes coding for carbamoyl-phosphate synthetases and carbamate kinases.Keywords
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