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A transcriptional activator is a protein (transcription factor) that increases transcription of a gene or set of genes. [1] Activators are considered to have positive control over gene expression, as they function to promote gene transcription and, in some cases, are required for the transcription of genes to occur.
Additionally, adding methyl groups to the SHP-1 gene (which reduces the amount of SHP-1 produced) has been linked to lymphoma (a type of blood cancer) . [43] However, SHP-1 may also promote JAK-STAT signalling. A study in 1997 found that SHP-1 potentially allows higher amounts of STAT activation, as opposed to reducing STAT activity. [44]
The activator bound coactivator recruits RNA polymerase and other transcription machinery that then begins transcribing the target gene. A coactivator is a type of transcriptional coregulator that binds to an activator (a transcription factor ) to increase the rate of transcription of a gene or set of genes. [ 1 ]
Thus, acetylation of histones is known to increase the expression of genes through transcription activation. Deacetylation performed by HDAC molecules has the opposite effect. By deacetylating the histone tails, the DNA becomes more tightly wrapped around the histone cores, making it harder for transcription factors to bind to the DNA.
Activator may refer to: Activator (genetics), a DNA-binding protein that regulates one or more genes by increasing the rate of transcription; Activator (phosphor), a type of dopant used in phosphors and scintillators; Enzyme activator, a type of effector that increases the rate of enzyme mediated reactions
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54426 Ensembl ENSG00000109758 ENSMUSG00000029102 UniProt Q04756 Q9R098 RefSeq (mRNA) NM_001297439 NM_001528 NM_019447 RefSeq (protein) NP_001284368 NP_001519 NP_062320 Location (UCSC) Chr 4: 3.44 – 3.45 Mb Chr 5: 35.2 – 35.21 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Hepatocyte growth factor activator is a protein that in humans is encoded by the HGFAC gene. The protein ...
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related to: activator genes explained easy for kids pictures printable black and white