derepressed gene

derepressed gene
a gene that is freed from its usual inhibition of expression, resulting in increased synthesis of the gene product; cf. repressed g.

Medical dictionary. 2011.

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  • repressed gene — a gene that under normal conditions is inhibited from synthesizing the maximum possible amount of gene product; cf. derepressed g …   Medical dictionary

  • List of genetic engineering topics — NOTOC # 3 end 5 end A Acentric chromosome Achondroplasia Active site Adam s Curse Adaptation Adenine Adenosine Adenosine diphosphate Adenovirus ADP Ala Alagille syndrome Albino Alcoholism Alkylating agent Allele Allele frequency Alleles… …   Wikipedia

  • List of genetics-related topics — This is a list of terms related to genetics. NOTOC # * 3 end * 5 end A * Acentric chromosome * Achondroplasia * Active site * Adam s Curse * Adaptation * Adenine * Adenosine * Adenovirus * Adenosine diphosphate (ADP) * Ala * Alagille syndrome *… …   Wikipedia

  • operon — A genetic functional unit that controls production of a messenger RNA; it consists of an operator gene and two or more structural genes located in sequence in the cis position on one chromosome. [L. operor, to work, act, + on] Lac o …   Medical dictionary

  • CAP — (= catabolite gene activator protein) Protein from E. coli that regulates the expression of genes for the use of alternative carbon sources if glucose is not available. For example, CAP and the lactose repressor protein act together to enable… …   Dictionary of molecular biology

  • lactose repressor — Protein (tetramer of 37 kD subunits) that normally binds with very high affinity to the operator region of the lactose operon and inhibits transcription of the downstream genes by blocking access of the polymerase to the promoter region. When the …   Dictionary of molecular biology

  • oncofetal antigen — a protein normally produced only by fetal tissue but often produced by certain tumours. An example is carcino embryonic antigen (CEA), which has been used as a tumour marker, especially in colorectal carcinomas. * * * an antigenic gene product… …   Medical dictionary

  • de|re|press — «DEE rih PREHS», transitive verb. Genetics. to induce (a gene) to operate by disengaging the repressor: »The group…now hopes to find out how genes are repressed and derepressed turned off and on so that genes can be made to operate when required… …   Useful english dictionary

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