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In 2008, two human transcriptomes, composed of millions of transcript-derived sequences covering 16,000 genes, were published, [3] [4] and by 2015 transcriptomes had been published for hundreds of individuals. [5] [6] Transcriptomes of different disease states, tissues, or even single cells are now routinely generated.
The transcription machine is a special purpose machine which is used for word or voice processing. This special device manages audio video recording to transcribe them into written or hard copy form. So transcription machines are combination of transcribers and dictation machines.
Transcription can also be studied at the level of individual cells by single-cell transcriptomics. Single-cell RNA sequencing (scRNA-seq) is a recently developed technique that allows the analysis of the transcriptome of single cells, including bacteria . [ 25 ]
Transcription factories, in genetics describe the discrete sites where transcription occurs in the cell nucleus, and are an example of a biomolecular condensate. They were first discovered in 1993 and have been found to have structures analogous to replication factories, sites where replication also occurs in discrete sites.
Transcription is the process by which the information contained in a section of DNA is replicated in the form of a newly assembled piece of messenger RNA (mRNA). Enzymes facilitating the process include RNA polymerase and transcription factors. In eukaryotic cells the primary transcript is pre-mRNA. Pre-mRNA must be processed for translation to ...
Several cell function specific transcription factors (there are about 1,600 transcription factors in a human cell [14]) generally bind to specific motifs on an enhancer [15] and a small combination of these enhancer-bound transcription factors, when brought close to a promoter by a DNA loop, govern level of transcription of the target gene.
Cancers form as a result of gene mutations as well as improper protein translation. In addition to cancer cells proliferating abnormally, they suppress the expression of anti-apoptotic or pro-apoptotic genes or proteins. Most cancer cells see a mutation in the signaling protein Ras, which functions as an on/off signal transductor in cells.
Eukaryotic Transcription. Eukaryotic transcription is the elaborate process that eukaryotic cells use to copy genetic information stored in DNA into units of transportable complementary RNA replica. [1] Gene transcription occurs in both eukaryotic and prokaryotic cells. Unlike prokaryotic RNA polymerase that initiates the transcription of all ...