repressorthe
protein product of a regulator
gene that prevents
transcription of a
gene at some other
locusSource: Jenkins, John B. 1990.
Human Genetics, 2nd Edition. New York: Harper & Row ...
Full article >>>Repressor proteins are coded for by regulator genes.
Repressor proteins then attach to a
DNA segment known as the
operator. By binding to the
operator, the
repressor protein prevents the
RNA polymerase from creating
messenger RNA.
Full article >>>Lac repressorThe
lac repressor is an
enzyme which stops the
metabolism of lactose in
bacteria as
long as
glucose is available.
Full article >>>The Tryptophan
RepressorIn E. coli, the synthesis of the
amino acid tryptophan from precursors available to the
cell requires 5
enzymes.
Full article >>>Dr. Richard M
organ, of the National
Human Genome Research Institute's Clinical
Gene Therapy Branch, defines
repressor.
related
terms:
protein,
gene ...
Full article >>>Repressor of Hh signaling
cos2w1 (null)
clones have increased Ci levels
cos23
mutation partially suppresses fu vein
phenotype just like Su(fu)LP (Preat, 1993)
fu[I]; cos27 flies look like cos27 flies (Preat, 1993) ...
Full article >>>Repressor A
gene product that negatively regulates
gene expression. Usually refers to a
DNA-binding
protein that inhibits
transcription under certain conditions.
Full article >>>repressor[L. reprimere, to press back, keep back]
A
protein that suppresses the
transcription of a
gene.
Full article >>>repressor A
compound that binds to and controls the regulator in
gene regulation.
reproductive barrier The factors that prevent one
sexually propagating
population from interbreeding and exchanging genes with another
population.
Full article >>>repressor protein -
DNA regulatory
protein that binds the
operator (a specific
DNA sequence) in the absence of the inducing substance (in the case of the lac
operon, lactose).
Full article >>>Repressor. A
DNA-binding
protein in
prokaryotes that blocks
gene transcription by binding to the
operator.
Full article >>>The
repressor protein is produced by a regulator
gene. The region of
DNA where the
repressor protein binds is the
operator site. The
promoter site is a region of
DNA where
RNA polymerase can bind.
Full article >>>A prokaryotic regulatory element that interacts with a
repressor to control the
transcription of adjacent
structural genes.
Organelle. A
cell structure that carries out a specialized function in the life of a
cell.
Origin of replication.
Full article >>>An example would be the
gene coding for cro, a
repressor protein.
regulatory sequence A
DNA sequence involved in regulating the
expression of a
gene: a
promoter or
operator. regulon A group of genes that are coordinately regulated.
Full article >>>Talk a little bit about
repressors and activators.
In terms of a biological process, in
order to get it going, one always usually thinks of activators.
Full article >>>Numerous studies have been performed using the relatively laborious method of
site-directed
mutagenesis and subsequent
expression ana
lysis, in
order to deduce the
identity and nature of cis-regulatory
elements (
enhancers and
repressors) at a ...
Full article >>>The regulator
gene codes for a
repressor protein that binds to the
operator, obstructing the
promoter (thus,
transcription) of the
structural genes. The regulator does not have to be adjacent to other genes in the
operon.
Full article >>>The term introduced by Jacob, Perrin, Sanchez and Monod (1960) for the
site at one end of an
operon where a
repressor molecule binds to the
DNA and thereby inhibits
transcription.
Full article >>>OPERATOR - The
site on
DNA at which a
repressor protein binds to prevent
transcription from initiating at the adjacent
promoter.
Full article >>>The resulting truncated
protein acts as a
repressor of
transposition. In germ
cells, removal of the
intron is allowed. The active
transposase is made. This is an example of regulation by differential splice
site suppression .
Full article >>>'"/>