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. 1985 Jun 11;13(11):4143–4153. doi: 10.1093/nar/13.11.4143

Deletion of C-terminal amino acid codons of PhiX174 gene E: effect on its lysis inducing properties.

A Schüller, R E Harkness, U Rüther, W Lubitz
PMCID: PMC341302  PMID: 2989789

Abstract

The lysis gene E of bacteriophage PhiX174 has been subjected to deletion and fusion analysis. Deletions of 11 to 90% of gene E specific nucleotides coding for to C-terminal region of the gene product were cloned under transcriptional control of lambda pL. For this purpose plasmid pSU1 was constructed which carries an extended polylinker region downstream of pL. Depending on the number of nucleotides after the last gene E specific codon, various C-terminal segments of protein E were replaced by 4, 5, 53 or 314 unrelated amino acids. Functional analysis for lysis inducing properties of the various gene E mutants revealed that the final 9 codons of the gene could be deleted without loss of function. However, replacements of 19 or more C-terminal codons eliminated gene E activity. Although the functional site of the gene E product is located within the N-terminal half of the polypeptide, the C-terminal part of the protein appears to exhibit severe influence on conformation and/or regulation of the functional site.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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