Anagram & Information om | Engelska ordet OPERON

Exempel på hur man kan använda OPERON i en mening

• In genetics, a transcription terminator is a section of nucleic acid sequence that marks the end of a gene or operon in genomic DNA during transcription.
• Although glucose is the preferred carbon source for most enteric bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available through the activity of β-galactosidase.
• coli lac operon, which encodes proteins necessary for the transport and breakdown of the sugar lactose (lac).
• Although as early as 1951, Barbara McClintock showed interaction between two genetic loci, Activator (Ac) and Dissociator (Ds), in the color formation of maize seeds, the first discovery of a gene regulation system is widely considered to be the identification in 1961 of the lac operon, discovered by François Jacob and Jacques Monod, in which some enzymes involved in lactose metabolism are expressed by E.
• It has been best studied in Escherichia coli, where it is a dimeric protein that regulates transcription of the 5 genes in the tryptophan operon.
• The acquired mechanism is typically the vanA gene and operon from a plasmid in Enterococcus faecium or Enterococcus faecalis.
• For example, the ste11 transcript in Schizosaccharomyces pombe has a 2273 nucleotide 5′ UTR while the lac operon in Escherichia coli only has seven nucleotides in its 5′ UTR.
• The archaeal NHEJ system in Methanocella paludicola have a homodimeric Ku, but the three functions of LigD are broken up into three single-domain proteins sharing an operon.
• A non-hydrolyzable analog of allolactose, isopropyl β-D-1-thiogalactopyranoside (IPTG), is normally used in molecular biology to induce the lac operon.
• His graduate student Iwona Stroynowski and Mitzi Kuroda discovered the process of attenuation of expression based on regulated binding ability of the five-prime untranslated region of the messenger RNA for the bacterial tryptophan operon.
• Like allolactose, IPTG binds to the lac repressor and releases the tetrameric repressor from the lac operator in an allosteric manner, thereby allowing the transcription of genes in the lac operon, such as the gene coding for beta-galactosidase, a hydrolase enzyme that catalyzes the hydrolysis of β-galactosides into monosaccharides.
• The lacI gene codes for a protein called "the repressor" or "the lac repressor", which functions to repressor of the lac operon.
• The second enzyme involved in the ammonia oxidation is hydroxylamine oxidoreductase (HAO), encoded by the hao operon.
• In Escherichia coli, the chb operon is involved with the utilization of cellobiose and β-glucosides chitobiose.
• Galactoside permease is a protein coded by the lacY gene of the lac operon, and is found bound to the membrane of a cell for the purpose of binding galactoside molecules that have been solubilized.
• In the ara operon (also known as the ara or araBAD operon), arabinose acts as both an inducer and a repressor.
• A high level of tryptophan will permit ribosomes to translate the attenuator sequence domains 1 and 2, allowing domains 3 and 4 to form a hairpin structure, which results in termination of transcription of the trp operon.
• In the absence of lactose, the constitutively expressed lac repressor protein binds to the operator region of the DNA and prevents the transcription of the operon genes.
• The repressor protein binds to the operator in the presence of tryptophan (repressing transcription) and is released from the operon when tryptophan is absent (allowing transcription to proceed).
• In particular, his research focused on the phenomenon of catabolite repression, a regulatory system involving interactions of cyclic AMP, the catabolite repressor protein (CRP) complex, and the lac operon and other inducible systems in bacteria.

Förberedelsen av sidan tog: 499,46 ms.