Navigation Links
Repression


Repression (inactivation) of certain sugar-metabolizing operons (eg lac) in favour of glucose utilization when glucose is the predominant carbon source in the environment of the cell.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Full article >>>

Repression
Switching off the expression of a gene or a group of genes in response to a chemical or other stimulus.
Full article >>>

REPRESSION - Inhibition of transcription (or translation) by the binding of a repressor protein to a specific site on DNA (or mRNA).
Full article >>>

Repression: A form of gene regulation wherein the promoter is prevented from assembling an RNA polymerase complex, so that transcription does not occur.
Resolution: Degree of molecular detail on a physical map of DNA, ranging from low to high.
Full article >>>

The repression proteins break down the mRNA by
removing its "cap"
removing its poly(A) tail
degrading the remaining message (nibbling away in the 5' -> 3' direction) ...
Full article >>>

As expected, disruption of fur also resulted in derepression of genes putatively involved in siderophore biosynthesis and iron uptake.
Full article >>>

Many militia members believed that the year 2000 would lead to political and personal repression enforced by the United Nations and countenanced by a compliant U.S. government.
Full article >>>

But clearly we have examples where you have both activation and repression in this process. And that's common to all biological processes. The whole concept that you need both activation and repression is a common theme throughout biology.
Full article >>>

Seventy-five different operons controlling 250 structural genes have been identified for E. coli. Both repression and induction are examples of negative control since the repressor proteins turn off transcription.
Full article >>>

A repressor is a DNA-binding protein that regulates the expression of one or more genes by decreasing the rate of transcription. This blocking of expression is called repression.
Full article >>>

repression A decrease in the expression of a gene in response to a regulatory protein. repressor The protein that binds to the regulatory sequence of a gene, blocking its transcription.
Full article >>>

X-inactivation -- the repression of one of the two X-chromosomes in the somatic cells of females as a method of dosage compensation; at an early embryonic stage in the normal female, one of the two X-chromosomes undergoes inactivation, ...
Full article >>>


'"/>


See more about: Repression

TAG: Repression
Other biology dictionary
(Date:8/7/2008)...e biochemical crosstalk that enables a fetus to ge...t may cause common postpartum blues, researchers s...o flow out of the uterine artery and get just a si...r. Puttur D. Prasad, biochemist in the Medical Col...olled exchange between the blood of mother and fet...
(Date:8/7/2008)...thsonian Tropical Research Institute will host the..." in Panama from 21-23 August, 2008. , The event... Community Foundation, the Science Committee of th...Office of the Undersecretary for Science. , Some...n earth may disappear during our lifetimes. Other...
(Date:8/6/2008)... STATION, Aug. 6, 2008 Think researchers know all... known as E. coli? Think again. "E. coli has more ...-fourth of these remain unknown," says Dr. Deborah...ity whose laboratory specializes in carrying out r... strains are normally found in the intestines of m...
(Date:8/6/2008)...ites science and health writers to cover Neuroscie...November 16, through Tuesday, November 18. A press...led for Sunday, November 16, from 8 to 9:30 a.m. ,...ny resources, including news releases, abstract la..., Additional information about scientific conten...
Breaking Biology News(10 mins):Likely cause of postpartum blues and depression identified 2Likely cause of postpartum blues and depression identified 3GIANT-Coli: A novel method to quicken discovery of gene function 2Patients cant recall their medications to tell doctors 3471 1Patients cant recall their medications to tell doctors 3471 2Patients cant recall their medications to tell doctors 3471 3A tiny pinch from a z ring helps bacteria cells divide 760 1A tiny pinch from a z ring helps bacteria cells divide 760 2A tiny pinch from a z ring helps bacteria cells divide 760 3Michigan Catholic Conference Responds to Formation of Embryonic Stem Cell Research Ballot Committee 1212 1Drug Makers Withdraw Cough Cold Meds for Infants 3468 1Drug Makers Withdraw Cough Cold Meds for Infants 3468 2Drug Makers Withdraw Cough Cold Meds for Infants 3468 3
...ftware GmbH, a pioneer and leader in the analysis ... MatBase, a knowledge base of transcription factor...d protein binding domains, related literature, mor...entally verified complexes with other TFs (promote... DNA binding sites of TFs.In contrast to other ava...
...with asthma, quitting smoking can improve lung fun...than two months. , The findings appear in the se...f Respiratory and Critical Care Medicine, publishe...omson, M.D., of the Departments of Respiratory Med... and seven associates studied 11 asthmatics who co...
...by University of Georgia researchers shows that th...ol disease outbreaks can actually make matters wor...st 7 edition of the journal Proceedings of the Roy...esearcher Marc Choisy and Pejman Rohani, associate...h Sciences Institute researcher, create a detailed...
...ity Medical Center scientists have developed the f...ith early-stage lung cancer will need chemotherapy...gimen of drugs. , The test has the potential to ...chemotherapy for patients who are currently advise... Institute for Genome Sciences & Policy. , T...
Other Biology News:Quitting smoking improves lung function considerably 2UGA researchers find that hunting can increase the severity of wildlife disease epidemics 2First-ever genomic test predicts which lung cancer patients need chemotherapy to live 2First-ever genomic test predicts which lung cancer patients need chemotherapy to live 3First-ever genomic test predicts which lung cancer patients need chemotherapy to live 4