RGD Reference Report - Characterization and derivation of the gene coding for mitochondrial carbamyl phosphate synthetase I of rat. - Rat Genome Database

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Characterization and derivation of the gene coding for mitochondrial carbamyl phosphate synthetase I of rat.

Authors: Nyunoya, H  Broglie, KE  Widgren, EE  Lusty, CJ 
Citation: Nyunoya H, etal., J Biol Chem 1985 Aug 5;260(16):9346-56.
RGD ID: 728256
Pubmed: PMID:2991241   (View Abstract at PubMed)

The nucleotide sequence of rat carbamyl phosphate synthetase I mRNA has been determined from the complementary DNA. The mRNA comprises minimally 5,645 nucleotides and codes for a polypeptide of 164,564 Da corresponding to the precursor form of the rat liver enzyme. The primary sequence of mature rat carbamyl phosphate synthetase I indicates that the precursor is cleaved at one of two leucines at residues 38 or 39. The derived amino acid sequence of carbamyl phosphate synthetase I is homologous to the sequences of carbamyl phosphate synthetase of Escherichia coli and yeast. The sequence homology extends along the entire length of the rat polypeptide and encompasses the entire sequences of both the small and large subunits of the E. coli and yeast enzymes. The protein sequence data provide strong evidence that the carbamyl phosphate synthetase I gene of rat, the carAB gene of E. coli, and the CPA1 and CPA2 genes of yeast were derived from common ancestral genes. Part of the rat carbamyl phosphate synthetase I gene has been characterized with two nonoverlapping phage clones spanning 28.7 kilobases of rat chromosomal DNA. This region contains 13 exons ranging in size from 68 to 195 base pairs and encodes the 453 carboxyl-terminal amino acids of the rat protein. Southern hybridization analysis of rat genomic DNA indicates the carbamyl phosphate synthetase I gene to be present in single copy.

Objects referenced in this article
Gene Cps1 carbamoyl-phosphate synthase 1 Rattus norvegicus

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