TACTAAC box gene transcriptions: Difference between revisions

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==TACT random dataset samplings==
==TACT random dataset samplings==


# RDr0: 0.
# TACTr0: 0.
# RDr1: 0.
# TACTr1: 1, TACTAAT at 2375.
# RDr2: 0.
# TACTr2: 1, TACTAAC at 2375.
# RDr3: 0.
# TACTr3: 0.
# RDr4: 0.
# TACTr4: 2, TACTAAT at 3670, TACTAAT at 3217.
# RDr5: 0.
# TACTr5: 0.
# RDr6: 0.
# RDr6: 0.
# RDr7: 0.
# RDr7: 0.
Line 74: Line 74:
# RDr9ci: 0.
# RDr9ci: 0.


===RDr arbitrary (evens) (4560-2846) UTRs===
===TACTr arbitrary (evens) (4560-2846) UTRs===
 
# TACTr4: TACTAAT at 3670, TACTAAT at 3217.


===RDr alternate (odds) (4560-2846) UTRs===
===RDr alternate (odds) (4560-2846) UTRs===
Line 94: Line 96:
===RDr alternate positive direction (evens) (4265-4050) proximal promoters===
===RDr alternate positive direction (evens) (4265-4050) proximal promoters===


===RDr arbitrary negative direction (evens) (2596-1) distal promoters===
===TACTr arbitrary negative direction (evens) (2596-1) distal promoters===
 
# TACTr2: TACTAAC at 2375.
 
===TACTr alternate negative direction (odds) (2596-1) distal promoters===
 
# TACTr1: TACTAAT at 2375.
 
===TACTr arbitrary positive direction (odds) (4050-1) distal promoters===


===RDr alternate negative direction (odds) (2596-1) distal promoters===
# TACTr1: TACTAAT at 2375.


===RDr arbitrary positive direction (odds) (4050-1) distal promoters===
===TACTr alternate positive direction (evens) (4050-1) distal promoters===


===RDr alternate positive direction (evens) (4050-1) distal promoters===
# TACTr2: TACTAAC at 2375.
# TACTr4: TACTAAT at 3670, TACTAAT at 3217.


==TACT analysis and results==
==TACT analysis and results==

Revision as of 06:32, 11 February 2023

Editor-In-Chief: Henry A. Hoff

File:Dictyostelium discoideum 43.jpg
This is a field of Dictyostelium discoideum. Credit: Usman Bashir.

"A consensus sequence TACTAA(C/T) was derived for the branch site of Dictyostelium introns."[1]

Consensus sequences

"The comparison of the two rp51 genes [...] suggests that this homology might be more extensive if one allows up to 3 bases to differ from a larger consensus sequence, ATTTACTAAC."[2]

TACT samplings

For the Basic programs (starting with SuccessablesTACT.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 SuccessablesTACT--.bas, looking for TACTAA(C/T), 0,
  2. negative strand in the positive direction (from ZNF497 to A1BG) is SuccessablesTACT-+.bas, looking for TACTAA(C/T), 0,
  3. positive strand in the negative direction is SuccessablesTACT+-.bas, looking for TACTAA(C/T), 0,
  4. positive strand in the positive direction is SuccessablesTACT++.bas, looking for TACTAA(C/T), 1, TACTAAT at 4157,
  5. inverse complement, negative strand, negative direction is SuccessablesTACTci--.bas, looking for (A/G)TTAGTA, 0,
  6. inverse complement, negative strand, positive direction is SuccessablesTACTci-+.bas, looking for (A/G)TTAGTA, 0,
  7. inverse complement, positive strand, negative direction is SuccessablesTACTci+-.bas, looking for (A/G)TTAGTA, 0,
  8. inverse complement, positive strand, positive direction is SuccessablesTACTci++.bas, looking for (A/G)TTAGTA, 1, ATTAGTA at 4148,

TACT positive direction (4265-4050) proximal promoters

  1. Positive strand, positive direction: TACTAAT at 4157.
  2. Positive strand, positive direction: ATTAGTA at 4148.

TACT random dataset samplings

  1. TACTr0: 0.
  2. TACTr1: 1, TACTAAT at 2375.
  3. TACTr2: 1, TACTAAC at 2375.
  4. TACTr3: 0.
  5. TACTr4: 2, TACTAAT at 3670, TACTAAT at 3217.
  6. TACTr5: 0.
  7. RDr6: 0.
  8. RDr7: 0.
  9. RDr8: 0.
  10. RDr9: 0.
  11. RDr0ci: 0.
  12. RDr1ci: 0.
  13. RDr2ci: 0.
  14. RDr3ci: 0.
  15. RDr4ci: 0.
  16. RDr5ci: 0.
  17. RDr6ci: 0.
  18. RDr7ci: 0.
  19. RDr8ci: 0.
  20. RDr9ci: 0.

TACTr arbitrary (evens) (4560-2846) UTRs

  1. TACTr4: TACTAAT at 3670, TACTAAT at 3217.

RDr alternate (odds) (4560-2846) UTRs

RDr arbitrary negative direction (evens) (2846-2811) core promoters

RDr alternate negative direction (odds) (2846-2811) core promoters

RDr arbitrary positive direction (odds) (4445-4265) core promoters

RDr alternate positive direction (evens) (4445-4265) core promoters

RDr arbitrary negative direction (evens) (2811-2596) proximal promoters

RDr alternate negative direction (odds) (2811-2596) proximal promoters

RDr arbitrary positive direction (odds) (4265-4050) proximal promoters

RDr alternate positive direction (evens) (4265-4050) proximal promoters

TACTr arbitrary negative direction (evens) (2596-1) distal promoters

  1. TACTr2: TACTAAC at 2375.

TACTr alternate negative direction (odds) (2596-1) distal promoters

  1. TACTr1: TACTAAT at 2375.

TACTr arbitrary positive direction (odds) (4050-1) distal promoters

  1. TACTr1: TACTAAT at 2375.

TACTr alternate positive direction (evens) (4050-1) distal promoters

  1. TACTr2: TACTAAC at 2375.
  2. TACTr4: TACTAAT at 3670, TACTAAT at 3217.

TACT analysis and results

Main article: Complex locus A1BG and ZNF497 § TACTs

"A consensus sequence TACTAA(C/T) was derived for the branch site of Dictyostelium introns."[1]

Reals or randoms Promoters direction Numbers Strands Occurrences Averages (± 0.1)
Reals UTR negative 0 2 0 0
Randoms UTR arbitrary negative 0 10 0 0
Randoms UTR alternate negative 0 10 0 0
Reals Core negative 0 2 0 0
Randoms Core arbitrary negative 0 10 0 0
Randoms Core alternate negative 0 10 0 0
Reals Core positive 0 2 0 0
Randoms Core arbitrary positive 0 10 0 0
Randoms Core alternate positive 0 10 0 0
Reals Proximal negative 0 2 0 0
Randoms Proximal arbitrary negative 0 10 0 0
Randoms Proximal alternate negative 0 10 0 0
Reals Proximal positive 2 2 1 1 ± 1 (-+0,++2)
Randoms Proximal arbitrary positive 0 10 0 0
Randoms Proximal alternate positive 0 10 0 0
Reals Distal negative 0 2 0 0
Randoms Distal arbitrary negative 0 10 0 0
Randoms Distal alternate negative 0 10 0 0
Reals Distal positive 0 2 0 0
Randoms Distal arbitrary positive 0 10 0 0
Randoms Distal alternate positive 0 10 0 0

Comparison:

The occurrences of real TACTs are greater than the randoms. This suggests that the real TACTs are likely active or activable.

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 Francisco Rivero (June 2002). "mRNA processing in Dictyostelium: sequence requirements for termination and splicing" (PDF). Protist. 153 (2): 169–76. doi:10.1078/1434-4610-00095. Retrieved 2017-04-05.
  2. ↑ Claudio W. Pikielny, John L. Teem, Michael Rosbash (September 1983). "Evidence for the biochemical role of an internal sequence in yeast nuclear mRNA introns: implications for U1 RNA and metazoan mRNA splicing" (PDF). Cell. 34 (2): 395–403. doi:10.1016/0092-8674(83)90373-2. Retrieved 2017-04-05.

External links

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