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  • Title: The complete nucleotide sequence of the Pseudomonas gene coding for carboxypeptidase G2.
    Author: Minton NP, Atkinson T, Bruton CJ, Sherwood RF.
    Journal: Gene; 1984 Nov; 31(1-3):31-8. PubMed ID: 6396165.
    Abstract:
    The complete nucleotide sequence of the Pseudomonas chromosomal gene coding for the enzyme carboxypeptidase G2 (CPG2) has been determined. The nucleotide sequence obtained has been confirmed by comparing the predicted amino acid sequence with that of randomly derived peptide fragments and by N-terminal sequencing of the purified protein. The gene has been shown to code for a 22 amino acid signal peptide at its N-terminus which closely resembles the signal peptides of other secreted proteins. An alternative 36 amino acid signal peptide which may function in Pseudomonas has also been identified. The codon utilisation of the gene is influenced by the high G + C (67.2%) content of the DNA and exhibits a 92.8% preference for codons ending in G or C. This unusual codon preference may contribute to the generally observed weak expression of Pseudomonas genes in Escherichia coli. A region of DNA upstream of the structural gene has also been sequenced and a ribosome binding site and two putative promoter sequences identified.
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