Regulation of Escherichia coli secA mRNA translation by a secretion-responsive element.
The Escherichia coli secA gene, whose translation is responsive to the proficiency of protein export within the cell, is the second gene in a three-gene operon and is flanked by gene X and mutT. By using gene fusion and oligonucleotide-directed mutagenesis techniques, we have localized this translationally regulated site to a region at the end of gene X and the beginning of secA. This region has been shown to bind SecA protein in vitro. These studies open the way for a direct investigation of the mechanism of secA regulation and its coupling to the protein secretion capability of the cell.
Schmidt
M G
MG
Department of Microbiology and Immunology, Medical University of South Carolina, Charleston 29425.
Dolan
K M
KM
Oliver
D B
DB
D000251:Adenosine Triphosphatases / Q000235:genetics*; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D004926:Escherichia coli / Q000235:genetics*; D029968:Escherichia coli Proteins; D015964:Gene Expression Regulation, Bacterial / Q000235:genetics*; D026901:Membrane Transport Proteins; D008969:Molecular Sequence Data; D016297:Mutagenesis, Site-Directed; D009841:Oligonucleotides / Q000235:genetics; D009876:Operon / Q000235:genetics; D010957:Plasmids / Q000235:genetics; D014176:Protein Biosynthesis / Q000235:genetics*; D012333:RNA, Messenger / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000096:biosynthesis; D012045:Regulatory Sequences, Nucleic Acid / Q000235:genetics*; D000069816:SEC Translocation Channels; D000081416:SecA Proteins; D001616:beta-Galactosidase / Q000235:genetics
D001426:Bacterial Proteins; D029968:Escherichia coli Proteins; D026901:Membrane Transport Proteins; D009841:Oligonucleotides; D012333:RNA, Messenger; D011993:Recombinant Fusion Proteins; D000069816:SEC Translocation Channels; D001616:beta-Galactosidase; D000251:Adenosine Triphosphatases; D000081416:SecA Proteins