Octamer transcription factor

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Octamer transcription factors are a family of transcription factors which binds to the "ATTTGCAT" DNA sequence. [1] Their DNA-binding domain is a POU domain.

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There are eight Octamer proteins in humans (Oct1–11), [2] which have been renamed according to the different classes of POU domain. [3] Octamer-3/4, also known as POU5F1, is one of the Yamanaka factors, which are critical for the maintenance and self-renewal of embryonic stem cells. [3] On the other hand, Oct-1 and Oct-2 are widely expressed in adult tissues. [3] Oct-7, 8 and 9, also known as "brain factors", are predominantly expressed in the central nervous system during embryonic development. [3] Oct-6 expression is confined to embryonic stem cells and the developing nervous system and skin, while Oct-11 is also involved in skin differentiation. [3]

Human Oct proteins

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<span class="mw-page-title-main">POU3F1</span> Protein-coding gene in the species Homo sapiens

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References

  1. Petryniak B, Staudt LM, Postema CE, McCormack WT, Thompson CB (1990). "Characterization of chicken octamer-binding proteins demonstrates that POU domain-containing homeobox transcription factors have been highly conserved during vertebrate evolution". Proc. Natl. Acad. Sci. U.S.A. 87 (3): 1099–103. Bibcode:1990PNAS...87.1099P. doi: 10.1073/pnas.87.3.1099 . PMC   53418 . PMID   1967834.
  2. Oct-5 and Oct-10 are not found in humans, while Oct-3 and Oct-4 were identified as the same protein.
  3. 1 2 3 4 5 Zhao, FQ (1 June 2013). "Octamer-binding transcription factors: genomics and functions". Frontiers in Bioscience (Landmark Edition). 18 (3): 1051–71. doi:10.2741/4162. PMC   4349413 . PMID   23747866.