title: Cloning of cybB, the gene for cytochrome b561 of Escherichia coli K12.
abstract: A 37 kb fragment of DNA from an F-prime factor, F100-12, which showed a gene dosage effect on b-type cytochromes, was cloned with a cosmid vector, pHC79. Gel filtration of cytochromes and product analysis of the hybrid plasmids indicated that this fragment contained cybB, the structural gene for cytochrome b561. A chromosomal DNA fragment carrying the cybB gene was cloned by the plaque hybridization technique with Charon 4A as a vector. The gene was subcloned into pBR322 and was located in a 1.3 kb DNA fragment. It was concluded that the cybB gene is located on the chromosome of Escherichia coli K12.
mesh_terms: D002874:Chromosome Mapping; D003001:Cloning, Molecular; D003573:Cytochrome b Group / Q000235:genetics*; D004926:Escherichia coli / Q000235:genetics*; D005796:Genes; D005798:Genes, Bacterial; D005822:Genetic Vectors; D010957:Plasmids
chemical_list: D003573:Cytochrome b Group; C023646:cytochrome b561