Open AccessOrganization of the nar genes at the chlZ locus
Author(s) -
Bonnefoy Violaine,
Ratouchniak Jeanine,
Blasco Francis,
Chippaux Marc
Publication year - 1997
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1997.tb10234.x
Subject(s) - operon , locus (genetics) , gene , genetics , escherichia coli , nitrite reductase , biology , homology (biology) , nitrate reductase , biochemistry , enzyme
The two membrane‐bound respiratory nitrate reductases of Escherichia coli are encoded by distinct operons at two different loci, chlC and chlZ , on the chromosome. The chlZ locus includes a narK homologue, narU , encoding a nitrite extrusion protein, and narZYWV encoding nitrate reductase Z. No apparent homologue to the narXL operon has been found. Homology between narU and narK on the one hand and narZYWV and narGHJI on the other hand is limited to the coding regions.