-35 sequence gene transcriptions

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Editor-In-Chief: Henry A. Hoff

File:Escherichia coli - MUSE.jpg
Escherichia coli - Sculpture is in vitro. Credit: Luke Jerram.{{free media}}

"The trp promoter does not have a consensus Pribnow box sequence (T-T-A-A-C-T) but it does have a consensus -35 sequence (T-T-G-A-C-A)."[1]

The "degenerate -35 sequence, and the location of the Fis binding site, which forces a suboptimal 16 bp spacing between the -35 and -10 elements, allow only σs but not σ70 to function at proP (P2).[2]

Consensus sequences

"Two domains upstream of the start site of transcription have been identified for which a consensus sequence has been formulated (1-5). [One of these domains is] the -35 sequence (5'-T-T-G-A-C-A-3')".[1]

A1BG sampling

For the Basic programs (starting with SuccessablesM35.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 in the negative direction (from ZSCAN22 to A1BG) is SuccessablesM35--.bas, looking for 3'-TTGACA-5', 2, 3'-TTGACA-5', 477, 3'-TTGACA-5', 4399,
  2. negative strand in the positive direction (from ZNF497 to A1BG) is SuccessablesM35-+.bas, looking for 3'-TTGACA-5', 0,
  3. positive strand in the negative direction is SuccessablesM35+-.bas, looking for 3'-TTGACA-5', 0,
  4. positive strand in the positive direction is SuccessablesM35++.bas, looking for 3'-TTGACA-5', 0,
  5. complement, negative strand, negative direction is SuccessablesM35c--.bas, looking for 3'-AACTGT-5', 0,
  6. complement, negative strand, positive direction is SuccessablesM35c-+.bas, looking for 3'-AACTGT-5', 0,
  7. complement, positive strand, negative direction is SuccessablesM35c+-.bas, looking for 3'-AACTGT-5', 2, 3'-AACTGT-5', 477, 3'-AACTGT-5', 4399,
  8. complement, positive strand, positive direction is SuccessablesM35c++.bas, looking for 3'-AACTGT-5', 0,
  9. inverse complement, negative strand, negative direction is SuccessablesM35ci--.bas, looking for 3'-TGTCAA-5', 0,
  10. inverse complement, negative strand, positive direction is SuccessablesM35ci-+.bas, looking for 3'-TGTCAA-5', 0,
  11. inverse complement, positive strand, negative direction is SuccessablesM35ci+-.bas, looking for 3'-TGTCAA-5', 0,
  12. inverse complement, positive strand, positive direction is SuccessablesM35ci++.bas, looking for 3'-TGTCAA-5', 0,
  13. inverse, negative strand, negative direction, is SuccessablesM35i--.bas, looking for 3'-ACAGTT-5', 0,
  14. inverse, negative strand, positive direction, is SuccessablesM35i-+.bas, looking for 3'-ACAGTT-5', 0,
  15. inverse, positive strand, negative direction, is SuccessablesM35i+-.bas, looking for 3'-ACAGTT-5', 0,
  16. inverse, positive strand, positive direction, is SuccessablesM35i++.bas, looking for 3'-ACAGTT-5', 0.

Acknowledgements

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

Initial content for this page in some instances came from Wikiversity.

See also

References

  1. 1.0 1.1 Herman A. de Boer, Lisa J. Comstock, and Mark Vasser (January 1983). "The tac promoter: A functional hybrid derived from the trp and lac promoters" (PDF). Proceedings of the National Academy of Sciences USA. 80 (1): 21–5. Retrieved 2017-02-19.
  2. Athanasios Typas, Stefano Stella, Reid C. Johnson and Regine Hengge (9 January 2007). "The -35 sequence location and the Fis–sigma factor interface determine σs selectivity of the proP (P2) promoter in Escherichia coli". Molecular Microbiology. 63 (3): 780–796. doi:10.1111/j.1365-2958.2006.05560.x. Retrieved 10 November 2018.

External links

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