Remarks:
Authentic RNA pol II promoter was confirmed between bases +280 and +640 relative to the main start site of
transcription. Comment from J. Jimenez: Our original studies of the LEF1 5'UTR were based on characterizing
a third promoter in the 5'UTR that is responsible for generating a 3.0 kb transcript. Because we had evidence
of an authentic promoter, we performed N. blot analysis. We did also attempt RT-PCR, but had technical
problems due to the high GC content of the 5'UTR.
Possibility of aberrant splicing of the plasmids with LEF-1 was ruled out only by the Northern-blot technique
(Fig. 2C and 3B).
See also DNA record GI:22858703 covering the promoter region, 5'-UTR and short part of CDS:
misc_feature 1371..1374
/experiment="experimental evidence, no additional details
recorded"
/note="transcription initiation site 1"
misc_feature 1506..1507
/experiment="experimental evidence, no additional details
recorded"
/note="transcription initiation site 2"
misc_feature 1821..1931
/experiment="experimental evidence, no additional details
recorded"
/note="Wnt response element (WRE)"
misc_feature 2201..2202
/experiment="experimental evidence, no additional details
recorded"
/note="transcription initiation site 3"
misc_feature 2325..2326
/experiment="experimental evidence, no additional details
recorded"
/note="transcription initiation site 4"
mRNA <2701..>2760
/product="LEF1"
One mRNA record and 3 EST records confirm that transcription initiation start site is within the first 99bp of
the 5'-UTR we present here:
>dbj|AK225772.1| UniGene infoGene info Homo sapiens mRNA for lymphoid enhancer binding factor-1 variant,
clone: FCC133A10
Length=2300
Score = 3042 bits (1647), Expect = 0.0
Identities = 1707/1731 (98%), Gaps = 23/1731 (1%)
Strand=Plus/Plus
Query 99 GGACGCGCCCGGAGCCTCGCACGCGGCCAAGCTC-GGGCGTCCCCTCCCCTCGGCCGGGC 157
|||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||
Sbjct 1 GGACGCGCCCGGAGCCTCGCACGCGGCCAAGCTCGGGGCGTCCCCTCCCCTCGGCCGGGC 60
[cut]
>gb|BM919836.1| UniGene info AGENCOURT_6708394 NIH_MGC_120 Homo sapiens cDNA clone IMAGE:5749600
5', mRNA sequence.
Length=1005
Score = 1568 bits (849), Expect = 0.0
Identities = 934/970 (96%), Gaps = 29/970 (2%)
Strand=Plus/Plus
Query 26 GAGGCGCAGCCGCTCACCTGCGGGGCAGGGCGCGGAGGAGGGACCC-GG-TGCGCGCTCT 83
|||||||||||||||||||||||||||||||||||||||||||||| || ||||||||||
Sbjct 1 GAGGCGCAGCCGCTCACCTGCGGGGCAGGGCGCGGAGGAGGGACCCGGGCTGCGCGCTCT 60
[cut]
>gb|BQ215285.1| UniGene infoGeo AGENCOURT_7553707 NIH_MGC_92 Homo sapiens cDNA clone IMAGE:6045994
5', mRNA sequence.
Length=874
Score = 1474 bits (798), Expect = 0.0
Identities = 851/873 (97%), Gaps = 17/873 (1%)
Strand=Plus/Plus
Query 33 AGCCGCTCACCTGCGGGGCAGGGCGCGGAGGAGGGACCC-GG-TGCGCGCTCTCGGGCCG 90
||||||||||||||||||||||||||||||||||||||| || |||||||||||||||||
Sbjct 1 AGCCGCTCACCTGCGGGGCAGGGCGCGGAGGAGGGACCCGGGCTGCGCGCTCTCGGGCCG 60
[cut]
>emb|CR981946.1| UniGene info CR981946 RZPD no.9016 Homo sapiens cDNA clone RZPDp9016C0812
5', mRNA sequence.
Length=678
Score = 1149 bits (622), Expect = 0.0
Identities = 660/678 (97%), Gaps = 10/678 (1%)
Strand=Plus/Plus
Query 28 GGCGCAGCCGCTCACCTGCGGGGCAGGGCGCGGAGGAGGGACCC-GG-TGCGCGCTCTCG 85
|||||||||||||||||||||||||||||||||||||||||||| || ||||||||||||
Sbjct 1 GGCGCAGCCGCTCACCTGCGGGGCAGGGCGCGGAGGAGGGACCCGGGCTGCGCGCTCTCG 60
[cut]
|