title: Expression vectors based on the rac fusion promoter.
abstract: The -35 region of the rrnB P2 promoter and the -10 region of the lacZpo promoter-operator were fused to form the strong and regulatable rac promoter. Vectors were constructed that allow the attachment of protein-coding sequences to the beta-galactosidase alpha-peptide (LacZ alpha) in any reading frame. By introducing a high-copy-number mutation, the synthesis of a LacZ alpha-chloramphenicol acetyltransferase fusion protein reached more than 60% of total cell protein in Escherichia coli.
mesh_terms: D000123:Acetyltransferases / Q000235:genetics; D015500:Chloramphenicol O-Acetyltransferase; D003001:Cloning, Molecular / Q000379:methods*; D004926:Escherichia coli / Q000235:genetics; D005786:Gene Expression Regulation; D005822:Genetic Vectors; D007763:Lac Operon; D008970:Molecular Weight; D010957:Plasmids; D011401:Promoter Regions, Genetic; D012335:RNA, Ribosomal / Q000235:genetics*; D011994:Recombinant Proteins / Q000235:genetics*; D001616:beta-Galactosidase / Q000235:genetics
chemical_list: D012335:RNA, Ribosomal; D011994:Recombinant Proteins; D000123:Acetyltransferases; D015500:Chloramphenicol O-Acetyltransferase; D001616:beta-Galactosidase