CAT box gene transcriptions
Associate Editor(s)-in-Chief: Henry A. Hoff
Human genes
The "four cystatin genes [GeneID: 1469 CST1, GeneID: 1470 CST2, GeneID: 1471 CST3, and GeneID: 1472 CST4] contain the ATA-box sequence (ATAAA) in their 5'-flanking regions; however, the CAT-box sequence (CAT), a binding site of the transcription factor, CTF, is found only in the 5'-flanking region of the S-type cystatin genes."[1]
Gene expressions
The "5‘ flanking region of the rat acetylcholine receptor (AChR) β subunit gene [with] regulatory elements that confer muscle specificity [includes] a minimal TATA-box-less promoter region containing an initiator motif. An 85-bp fragment [promotes] high muscle-specific expression of a chloramphenicol acetyltransferase (CAT) reporter construct upon transfection in primary muscle cells. This sequence can be functionally dissected in a basal muscle-specific promoter element carrying a M-CAT box that is flanked at the 5’ end by an enhancer element with two binding sites for myogenic factors. Point mutations in the M-CAT box cause the loss of transcriptional activity of the basal promoter fragment. The enhancer activity depends on the presence of both E boxes that cooperate in a synergistic fashion. [The] control of muscle-specific and developmental expression of the rat AChR β subunit gene requires both regulatory elements, the M-CAT box and two adjacent E boxes, located in close proximity to each other."[2]
Interactions
The "minimal regulatory region of the 5’ flanking sequence contains E box elements that are defined by the nucleotides CANNTG [26, 271. E boxes are shown to provide binding sites for helix-loop-helix proteins of the MyoDl family including MyoDl [28], myogenin [29, 301, MRF4/ herculin [31] and myf5 [32]."[2]
Enhancer activity
"Partial sequence of the 5' flanking region of the rat AChR β subunit gene [contains] putative E box element [CAGGTG], putative Sp1 element [GGGGCGGGT at -85 nts], putative Shue box element [CCCTGGCCTGG at -15 nts], M-CAT box element [GCGGCCTC at -8 nts]."[2]
"Within the first 140bp of the 5’ flanking region the position and sequence of three other putative regulatory elements, the Spl [43, 44], M-CAT [34] and Shue box [45], are conserved between mouse and rat".[2]
Consensus sequences
"The M-CAT consensus sequence [is] CATTCCT".[2]
Promoter occurrences
"A CAT-box-like element, GCCATT [34], adjacent to the GC-box, is conserved in the three promoters."[2]
Hypotheses
- A1BG has no CAT boxes in either promoter.
- A1BG is not transcribed by a CAT box.
- CAT box does not participate in the transcription of A1BG.
CAT box samplings
Copying a CAT box consensus sequence 5'-CATTCCT-3' and putting the sequence in "⌘F" finds one 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 5'-CATTCCT-3' (starting with SuccessablesCAT.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:
- negative strand, negative direction, looking for 5'-CATTCCT-3', 0.
- negative strand, positive direction, looking for 5'-CATTCCT-3', 1, 5'-CATTCCT-3' at 2209, and complement.
- positive strand, negative direction, looking for 5'-CATTCCT-3', 0.
- positive strand, positive direction, looking for 5'-CATTCCT-3', 1, 5'-CATTCCT-3' at 2458, and complement.
- complement, negative strand, negative direction, looking for 5'-GTAAGGA-3', 0.
- complement, negative strand, positive direction, looking for 5'-GTAAGGA-3', 1, 5'-GTAAGGA-3' at 2458.
- complement, positive strand, negative direction, looking for 5'-GTAAGGA-3', 0.
- complement, positive strand, positive direction, looking for 5'-GTAAGGA-3', 1, 5'-GTAAGGA-3' at 2209.
- inverse complement, negative strand, negative direction, looking for 5'-AGGAATG-3', 0.
- inverse complement, negative strand, positive direction, looking for 5'-AGGAATG-3', 0.
- inverse complement, positive strand, negative direction, looking for 5'-AGGAATG-3', 1, 5'-AGGAATG-3' at 4554.
- inverse complement, positive strand, positive direction, looking for 5'-AGGAATG-3', 0.
- inverse negative strand, negative direction, looking for 5'-TCCTTAC-3', 1, 5'-TCCTTAC-3' at 4554.
- inverse negative strand, positive direction, looking for 5'-TCCTTAC-3', 0.
- inverse positive strand, negative direction, looking for 5'-TCCTTAC-3', 0.
- inverse positive strand, positive direction, looking for 5'-TCCTTAC-3', 0.
CAT box UTR promoters
- Negative strand, negative direction: TCCTTAC at 4554.
CAT box distal promoters
- Negative strand, positive direction: CATTCCT at 2209.
- Positive strand, positive direction: CATTCCT at 2458.
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
- ↑ Eiichi Saitoh and Satoko Isemura (January 1, 1993). "Molecular Biology of Human Salivary Cysteine Proteinase Inhibitors" (PDF). Critical Reviews in Oral Biology and Medicine. 4 (3/4): 487–93. doi:10.1177/10454411930040033301. Retrieved 2013-06-28.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Christof Berberich, Ingolf Dürr, Michael Koenen and Veit Witzemann (September 1993). "Two adjacent E box elements and a M‐CAT box are involved in the muscle‐specific regulation of the rat acetylcholine receptor β subunit gene". European Journal of Biochemistry. 216 (2): 395–404. doi:10.1111/j.1432-1033.1993.tb18157.x. Retrieved 27 December 2019.