Transcription factor 3 gene transcriptions

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Associate Editor(s)-in-Chief: Henry A. Hoff

Transcription factor 3 (E2A immunoglobulin enhancer-binding factors E12/E47) (TCF3), is a protein that in humans is encoded by the TCF3 gene.[1][2] TCF3 has been shown to directly enhance Hes1 (a well-known target of Notch signaling) expression.[3]

This gene encodes a member of the E protein (class I) family of helix-loop-helix transcription factors. The 9aaTAD transactivation domains of E proteins and MLL are very similar and both bind to the KIX domain of general transcriptional mediator CBP.[4][5]

Human genes

Gene ID: 6929 is TCF3 transcription factor 3 on 19p13.3: "This gene encodes a member of the E protein (class I) family of helix-loop-helix transcription factors. E proteins activate transcription by binding to regulatory E-box sequences on target genes as heterodimers or homodimers, and are inhibited by heterodimerization with inhibitor of DNA-binding (class IV) helix-loop-helix proteins. E proteins play a critical role in lymphopoiesis, and the encoded protein is required for B and T lymphocyte development. Deletion of this gene or diminished activity of the encoded protein may play a role in lymphoid malignancies. This gene is also involved in several chromosomal translocations that are associated with lymphoid malignancies including pre-B-cell acute lymphoblastic leukemia (t(1;19), with PBX1), childhood leukemia (t(19;19), with TFPT) and acute leukemia (t(12;19), with ZNF384). Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and a pseudogene of this gene is located on the short arm of chromosome 9."[6]

Gene expressions

Interactions

Consensus sequences

Consensus sequence found in the promoter of TUG1 is GTCTGGT.[7]

Binding site for

Enhancer activity

E proteins activate transcription by binding to regulatory E-box sequences on target genes as heterodimers or homodimers, and are inhibited by heterodimerization with inhibitor of DNA-binding (class IV) helix-loop-helix proteins. E proteins play a critical role in lymphopoiesis, and the encoded protein is required for B and T lymphocyte development.[6]

Promoter occurrences

Hypotheses

  1. A1BG has no regulatory elements in either promoter.
  2. A1BG is not transcribed by a regulatory element.
  3. No regulatory element participates in the transcription of A1BG.

TCF3 samplings

Copying a responsive elements consensus sequence GTCTGGT and putting the sequence in "⌘F" finds none between ZNF497 and A1BG or none between ZSCAN22 and A1BG as can be found by the computer programs.

For the Basic programs testing consensus sequence GTCTGGT (starting with SuccessablesTCF.bas) written to compare nucleotide sequences with the sequences on either the template strand (-), or coding strand (+), of the DNA, in the negative direction (-), or the positive direction (+), the programs are, are looking for, and found:

  1. negative strand, negative direction, looking for AAAAAAAA, 0.
  2. positive strand, negative direction, looking for AAAAAAAA, 0.
  3. positive strand, positive direction, looking for AAAAAAAA, 0.
  4. negative strand, positive direction, looking for AAAAAAAA, 0.
  5. complement, negative strand, negative direction, looking for TTTTTTTT, 0.
  6. complement, positive strand, negative direction, looking for TTTTTTTT, 0.
  7. complement, positive strand, positive direction, looking for TTTTTTTT, 0.
  8. complement, negative strand, positive direction, looking for TTTTTTTT, 0.
  9. inverse complement, negative strand, negative direction, looking for TTTTTTTT, 0.
  10. inverse complement, positive strand, negative direction, looking for TTTTTTTT, 0.
  11. inverse complement, positive strand, positive direction, looking for TTTTTTTT, 0.
  12. inverse complement, negative strand, positive direction, looking for TTTTTTTT, 0.
  13. inverse negative strand, negative direction, looking for AAAAAAAA, 0.
  14. inverse positive strand, negative direction, looking for AAAAAAAA, 0.
  15. inverse positive strand, positive direction, looking for AAAAAAAA, 0.
  16. inverse negative strand, positive direction, looking for AAAAAAAA, 0.

TCF UTRs

TCF core promoters

TCF proximal promoters

TCF distal promoters

Acknowledgements

The content on this page was first contributed by: Henry A. Hoff.

See also

References

  1. Henthorn P, McCarrick-Walmsley R, Kadesch T (February 1990). "Sequence of the cDNA encoding ITF-1, a positive-acting transcription factor". Nucleic Acids Research. 18 (3): 677. doi:10.1093/nar/18.3.677. PMID 2308859.
  2. Kamps MP, Murre C, Sun XH, Baltimore D (February 1990). "A new homeobox gene contributes the DNA binding domain of the t(1;19) translocation protein in pre-B ALL". Cell. 60 (4): 547–55. doi:10.1016/0092-8674(90)90658-2. PMID 1967983.
  3. E proteins and Notch signaling cooperate to promote T cell lineage specification and commitment
  4. Piskacek S (2007). "Nine-amino-acid transactivation domain: Establishment and prediction utilities". Genomics. 89 (6): 756–768. doi:10.1016/j.ygeno.2007.02.003. PMID 17467953.
  5. Piskacek, Martin; Vasku, A; Hajek, R; Knight, A (2015). "Shared structural features of the 9aaTAD family in complex with CBP". Mol. Biosyst. 11 (3): 844–851. doi:10.1039/c4mb00672k. PMID 25564305.
  6. 6.0 6.1 RefSeq (September 2011). "TCF3 transcription factor 3 [ Homo sapiens (human) ]". 8600 Rockville Pike, Bethesda MD, 20894 USA: National Center for Biotechnology Information, U.S. National Library of Medicine. Retrieved 22 November 2020.

External links