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Unlike facultative genes that are transcribed only when needed, constitutive genes are expressed continuously. It is because constitutive genes such as housekeeping genes code for products with housekeeping functions in cells, e.g. maintaining the basic cell processes or structure.
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www.biology-online.org/dictionary/Constitutive_gene
www.biology-online.org/dictionary/Constitutive_gene
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Gene expression - Wikipedia, the free encyclopedia
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Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product. These products are often proteins, but in non-protein coding genes such as rRNA ...
en.wikipedia.org/wiki/Gene_expression
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A splicing enhancer exhibits both constitutive and regulated activities. ... 1: Genes Dev. 1994 Jul 15;8(14):1703-12. Links ... Genes Dev. 1995 Feb 1; 9(3):284-93.
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www.ncbi.nlm.nih.gov/pubmed/7958850
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We report here the identification of a new class of constitutive photomorphogenic (cop) mutants, cop2, cop3, and cop4, in which dark-grown seedlings have open and enlarged cotyledons resembling those ... The cop4 mutation also leads to high-level dark expression of nuclear, but not plastid-encoded, light-inducible genes.
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www.plantcell.org/cgi/content/abstract/5/3/329
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Automatic download; [Begin manual download] ... Downloading the PDF version of:; Plant Cell Hou et al. 5 (3): 329. (4659K) ... This file is in Adobe Acrobat (PDF) format. If you have not installed and configured the Adobe Acrobat Reader on your system, see Help with Printing for instructions.
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www.plantcell.org/cgi/reprint/5/3/329
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Constitutive and silk gland-specific tRNA(Ala) genes from silkworms have very different transcriptional properties in vitro. Typically, the constitutive type, which encodes tRNA(AlaC), directs transcription much more efficiently than does the silk gland-specific type, which encodes tRNA(AlaSG).
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mcb.asm.org/cgi/content/abstract/14/3/1806
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A restriction map was made and the DNA sequence was determined for a plasmid, pMC38, derived from the inducible macrolide resistance plasmid pEP2104, that showed constitutive resistance to PMS antibiotics (partial macrolide and streptogramin B antibiotics). ... Genes, Bacterial...
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www.medscape.com/medline/abstract/10564793
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Accumulated evidence suggests that cross-talk between the pregnane X receptor (PXR) and the constitutive androstane receptor (CAR) results in shared transcriptional activation of CYP2B and CYP3A genes.
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jpet.aspetjournals.org/cgi/content/full/317/3/1200
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Genes are specifically located in linear order along the single DNA molecule that makes up each chromosome. All eukaryotic cells contain a diploid (2n) set of chromosomes so that two copies of each gene, one derived from each parent, are present in each cell; ... 2], the array also contained several constitutive genes.
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medical-dictionary.thefreedictionary.com/Constitutive+g...
medical-dictionary.thefreedictionary.com/Constitutive+gene
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