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The AP-1 transcription factor also has been shown to be involved in breast cancer cell growth through multiple mechanisms, including regulation of cyclin D1, E2F factors and their target genes. c-Jun, which is one of the AP-1 subunits, regulates the growth of breast cancer cells.
Transcription factor Jun is a protein that in humans is encoded by the JUN gene. c-Jun, in combination with protein c-Fos, forms the AP-1 early response transcription factor. It was first identified as the Fos-binding protein p39 and only later rediscovered as the product of the JUN gene. c-jun was the first oncogenic transcription factor ...
It has been mapped to chromosome region 14q21→q31. c-Fos encodes a 62 kDa protein, which forms heterodimer with c-jun (part of Jun family of transcription factors), resulting in the formation of AP-1 (Activator Protein-1) complex which binds DNA at AP-1 specific sites at the promoter and enhancer regions of target genes and converts ...
In biochemistry and molecular genetics, an AP site (apurinic/apyrimidinic site), also known as an abasic site, is a location in DNA (also in RNA but much less likely) that has neither a purine nor a pyrimidine base, either spontaneously or due to DNA damage. It has been estimated that under physiological conditions 10,000 apurinic sites and 500 ...
These genes encode leucine zipper proteins that can dimerize with proteins of the JUN family (e.g., c-Jun, JunD), thereby forming the transcription factor complex AP-1. As such, the FOS proteins have been implicated as regulators of cell proliferation, differentiation, and transformation. [ 5 ]
The AP-1 binding site, also known as the AP-1 promoter site, is a DNA sequence to which AP-1 transcription factors are able to bind. [1] The AP-1 binding site, in humans, has a nucleotide sequence of ATGAGTCAT, where A corresponds to adenine , T corresponds to thymine , G corresponds to guanine , and C corresponds to cytosine .
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There are 28 genes in humans, [4] 27 in the mouse, 10 in Caenorhabditis elegans and 9 in Drosophila. The founding member of this family was identified as a gene transduced by the leukemia virus, E26. The members of the family have been implicated in the development of different tissues as well as cancer progression.