Analysis of the role of the nnrR gene product in the response of Rhodobacter sphaeroides 2.4.1 to exogenous nitric oxide.

AUTOR(ES)

Kwiatkowski, A V

RESUMO

Rhodobacter sphaeroides 2.4.1, which is incapable of denitrification, has been found to carry nnrR, the nor operon, and nnrS, which are utilized for denitrification in R. sphaeroides 2.4.3. The gene encoding nitrite reductase was not found in 2.4.1. Expression of beta-galactosidase activity from a norB-lacZ fusion was activated when cells of 2.4.1 were incubated with NO-producing bacteria. This result indicates that the products of nnrR and the genes flanking it are utilized when 2.4.1 is growing in an environment where denitrification occurs.

Documentos Relacionados

• Cloning and characterization of nnrR, whose product is required for the expression of proteins involved in nitric oxide metabolism in Rhodobacter sphaeroides 2.4.3.
• The Rhodobacter sphaeroides 2.4.1 rho gene: expression and genetic analysis of structure and function.
• Role of the fnrL Gene in Photosystem Gene Expression and Photosynthetic Growth of Rhodobacter sphaeroides 2.4.1
• Genetic and Phenotypic Analyses of the rdx Locus of Rhodobacter sphaeroides 2.4.1
• Interdependent Expression of the ccoNOQP-rdxBHIS Loci in Rhodobacter sphaeroides 2.4.1