Operon General structure
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- considered to be rare. In general, expression of prokaryotic operons leads to the generation of polycistronic mRNAs, while eukaryotic operons lead to monocistronic...
The lactose operon (lac operon) is an operon required for the transport and metabolism of lactose in E. coli and many other enteric bacteria. Although...- difference is that prokaryotic ORFs are often grouped into a polycistronic operon under the control of a shared set of regulatory sequences. These ORFs are...
- Attenuator (genetics) (section The trp operon)textbooks, is ribosome-mediated attenuation of the trp operon. Ribosome-mediated attenuation of the trp operon relies on the fact that, in bacteria, transcription...
- The gua operon is responsible for regulating the synthesis of guanosine mono phosphate (GMP), a purine nucleotide, from inosine monophosphate (IMP or inosinate)...
Amino acid synthesis (section ilvEDA operon)of argR, ArgR an aporepressor, and arginine as a corepressor affect the operon of arginine biosynthesis. The degree of repression is determined by the...
Gene (section Structure and function)of the operon, called the operator region, and represses transcription of the operon; when the repressor is inactive transcription of the operon can occur...- promoter site. In prokaryotes, multiple genes can be transcribed together (operon), and are thus controlled under the same regulatory sequence. In eukaryotes...
Chaperonin (section Structure)nucleotide sequence of the Brucella abortus groE operon". Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression. 1130 (1): 120–2. doi:10...
synthesis". Monod and Jacob became famous for their work on the E. coli lac operon, which encodes proteins necessary for the transport and breakdown of the...- P fimbriae (section Structure and expression)the assembly are expressed by the Pap operon, which is located on pathogenicity islands. The genes of the Pap operon encode five structural proteins (PapA...
are phylogenetically widespread and display large diversity in operon and protein structure". PLOS ONE. 7 (12): e51274. Bibcode:2012PLoSO...751274D. doi:10...- regulatory factor (i.e. regulatory protein). A term derived from the lac operon, structural genes are typically viewed as those containing sequences of...
The larger plasmids carry other genes, as well as the colicin operon. The colicin operons are generally organized with several major genes. These include...
image to the right demonstrates regulation by a repressor in the lac operon. General transcription factors position RNA polymerase at the start of a protein-coding...
synthesized in the cytoplasm through the transcription of multiple ribosome gene operons. In eukaryotes, the process takes place both in the cell cytoplasm and...- Database Operon DNA binding site Promoter Trans-acting factor ORegAnno Shafee, Thomas; Lowe, Rohan (2017). "Eukaryotic and prokaryotic gene structure". WikiJournal...
- (a complex usually consisting of about 26 proteins in an interacting structure) communicates regulatory signals from enhancer DNA-bound transcription...
Vereecke, D.; Temmerman, W.; Van Montagu, M.; Desomer, J. (1994). "The fas operon of Rhodococcus fascians encodes new genes required for efficient fasciation...
catabolism. cAMP-CAP is required for transcription activation of the lac operon. This requirement reflects the greater simplicity with which glucose may...
- presenting the general features of an operon. As mentioned, the initial component of an operon is the inhibitor gene. In the case of the lac operon, immediately