Molecular and General Genetics MGG

, Volume 232, Issue 1, pp 7–11 | Cite as

Clustering of genes involved in nitrate assimilation in the cyanobacterium Synechococcus

  • Ignacio Luque
  • Antonia Herrero
  • Enrique Flores
  • Francisco Madueño


A region of the genome of the cyanobacterium Synechococcus R2, that bears a cluster of genes involved in nitrate assimilation, has been cloned and the relative positions of some of the genes in the region have been determined. Mutations generated by insertion of an antibiotic-resistance gene cassette into the gene encoding nitrite reductase are associated with reduced expression of nitrate reductase; cotranscription of nitrate assimilation genes in the cluster is inferred from this finding.

Key words

Nitrate assimilation genes Synechococcus Cotranscription Genetic regulation 


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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Ignacio Luque
    • 1
  • Antonia Herrero
    • 1
  • Enrique Flores
    • 1
  • Francisco Madueño
    • 1
  1. 1.Instituto de Bioquimica Vegetal y Fotosintesis, Universidad de Sevilla y CSICFacultad de BiologíaSevillaSpain

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