An enzyme repressor is a type of regulatory protein that controls the activity of enzymes, typically by binding to specific sites on DNA or directly to...

examples could be antibiotics. It is the opposite of an enzyme repressor. There are specific types of enzyme inducers that create cytoprotective pathways that...

turns the gene on). Then there's the repressor protein that turns genes off. The inducer can remove this repressor, turning genes back on. The operator...

bind to the repressor and make it bind to the operator tightly, which decreases transcription. A repressor that binds with a co-repressor is termed an...

either allolactose or IPTG, to the repressor affects the distribution of repressor between the two shapes. Thus, repressor with inducer bound is stabilized...

interactions between a repressor protein, the gene for the enzyme, and the substrate of the enzyme, which interact so that the outcome (enzyme synthesis or not)...

replication of the lambda genome (OP). Cro dominates the repressor site (see "Repressor" section), repressing synthesis from the PRM promoter (which is a promoter...

explain enzyme induction, in the context of the lac operon of Escherichia coli. In the absence of lactose, the constitutively expressed lac repressor protein...

the aconitase is converted to IRPF1, a translation repressor or mRNA stabilizer that represses the formation of iron-binding proteins and favours formation...

The LexA repressor or LexA (Locus for X-ray sensitivity A) is a transcriptional repressor (EC 3.4.21.88) that represses SOS response genes coding primarily...

Tryptophan repressor (or trp repressor) is a transcription factor involved in controlling amino acid metabolism. It has been best studied in Escherichia...

also regulated by feedback inhibition: tryptophan is a co-repressor to the TrpR repressor. The oxaloacetate/aspartate family of amino acids is composed...

Deubiquitinating enzymes (DUBs), also known as deubiquitinating peptidases, deubiquitinating isopeptidases, deubiquitinases, ubiquitin proteases, ubiquitin...

of the tetrameric lac repressor, which results in conformational changes and reduces the binding affinity of the lac repressor to the lac operator, thereby...

present, these tryptophan repressor dimers bind to tryptophan, causing a change in the repressor conformation, allowing the repressor to bind to the operator...

A diffusion-limited enzyme catalyses a reaction so efficiently that the rate limiting step is that of substrate diffusion into the active site, or product...

disabling repressors. The gene is expressed because an inducer binds to the repressor. The binding of the inducer to the repressor prevents the repressor from...

In molecular biology, the arginine repressor (ArgR) is a repressor of prokaryotic arginine deiminase pathways. The arginine dihydrolase (AD) pathway is...

such as glucose will inhibit enzyme production by repressing the transcription of associated cellulose-degrading enzymes. Environmental conditions such...

the repressor gene (trp R) that binds to the operator. In the lac operon, lactose binds to the repressor protein and prevents it from repressing gene...

devoted to repressing the transcription of the DNA to its product (RNA, which in turn is decoded into protein). This repressor (the lac repressor) is made...

expression of the gene. The image to the right demonstrates regulation by a repressor in the lac operon. General transcription factors position RNA polymerase...

Histone-modifying enzymes are enzymes involved in the modification of histone substrates after protein translation and affect cellular processes including...

the binding site for the repressor and thus has a function equivalent to the silencer region in Eukaryotic DNA. When a repressor protein is bound to the...

AHRR may refer to: Aryl hydrocarbon receptor repressor, gene Cytochrome P450, family 1, member A1, enzyme This disambiguation page lists articles associated...

operator. Like allolactose, IPTG binds to the lac repressor and releases the tetrameric repressor from the lac operator in an allosteric manner, thereby...

source first. This is usually achieved through inhibition of synthesis of enzymes involved in catabolism of carbon sources other than the preferred one....

cell wall or cell membrane. It was initially thought as the LytR (lytic repressor) component of a LytABC operon encoding autolysins, but the mechanism of...

amounts of a repressor protein that prevents transcription of the transposase gene. The eggs of M strain mothers, which do not contain the repressor protein...

S2CID 310256. Fried M, Crothers DM (1981). "Equilibria and kinetics of lac repressor-operator interactions by polyacrylamide gel electrophoresis". Nucleic...