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Promoter in Biological Definition

Promoter

... for disambiguation of the term promoter, see the promoter Wiktionary article In genetics , a promoter is a DNA sequence that enables a gene to be transcribed . The promoter is recognized by RNA polymerase , which then ...

Operon

... An operon is a group of genes including an operator , a common promoter , and one or more structural genes that are controlled as a unit to ... and two associated segments of DNA : an operator (the switch) a promoter (a binding site for the transcription enzyme ). The switch of an ...

Bioinformatics

... to that expression data to determine which genes are co-expressed. Further analysis could take a variety of directions: one 2004 study analyzed the promoter sequences of co-expressed (clustered together) genes to find common regulatory elements and used machine learning techniques to predict the ...

Bioinformatics

... to that expression data to determine which genes are co-expressed. Further analysis could take a variety of directions: one 2004 study analyzed the promoter sequences of co-expressed (clustered together) genes to find common regulatory elements and used machine learning techniques to predict the ...

Enhancer

... article in Science , where researchers Wedel, et. al., made two linked circles of DNA, one circle with the enhancer sequence and the other with its promoter . An abstract can be found here .) An enhancer does not need to bind close to the transcription initiation site to affect its transcription, as ...

Gene

... DNA strand is expressed into a trait only if it is transcribed to RNA . Because the transcription starts from a specific base-pair sequence (a promoter ) and stops at another (a terminator ), our DNA strand needs to be correctly placed between the two. If not, it is considered as junk DNA , and is ...

Homeobox

... of a single homeodomain protein is usually not enough to recognize only its desired target genes. Most of the time, homeodomain proteins act in the promoter region of their target genes as complexes with other transcription factors, often also homeodomain proteins. Such complexes have a much higher target ...

Molecular biology

... of interest is cloned (using PCR and/or restriction enzymes ) into a plasmid (known as an expression vector). This plasmid may have special promoter elements to drive production of the protein of interest, and may also have antibiotic resistance markers to help follow the plasmid. This plasmid ...

Protein biosynthesis

... The transcription starts with initiation. RNA polymerase , an enzyme, binds to a specific region on the DNA, marking the starting point, called the promoter . As the RNA polymerase binds on to the promoter, the DNA strands are beginning to unwind. The second process is known as elongation. As the RNA ...

RNA

... Synthesis RNA is made by an enzyme , RNA polymerase , using DNA as a template. The synthesis begins when the enzyme binds to special promoter regions on the DNA helix; these regions mark the beginning of a gene. The DNA double helix is unwound by the helicase activity of the enzyme. ...

Signal transduction

... were activated by the hormones attach at the DNA at receptor-specific Hormone Responsive Elements ( HREs ), DNA sequences that are located in the promoter region of the genes that are activated by the hormone-receptor complex. As this enables the transcription of the according gene, these hormones are ...
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