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Nucleic Acids Research, 1984, Vol. 12, No. 15 6091-6099
© 1984

MOLECULAR BIOLOGY

Expresion of the rpsO and pnp genes: structural analysis of a DNA fragment carrying their control regions

Claude Portier and Philippe Regnier*

Institut de Biologie Physico-chimique 13, rue Pierre et Marie Curie, 75005 Paris, France

Received May 15, 1984. Revised July 11, 1984. Accepted July 11, 1984.

Precise physical mapping of the genes rpsO and pnq coding respectively for ribosomal protein S15 and polynucleotide phosphorylase together with regions involved in the regulation of their expression has been obtained by the analysls of in vitro deletion mutants. The results suggest that each gene has its own promotor, but that there is coexpression of rpsO and pnp. The nucleotide sequence of rpsO and of the beginning of pnp is presented and includes the presumed regulatory regions of these genes. Several features of the sequence support the mapping experiments and are discussed in relation to the expression of the ribosomal and pnp genes.

*Philippe Regnier is a fellow of University Paris VII.


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