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Promoter and transcription start site of human and rabbit butyrylcholinesterase genes
Two kilobase segments of the 5'-untranslated regions of the human and rabbit butyrylcholinesterase (BCHE) genes were characterized. The sequences shared extensive identity except for a 333-base pair (bp) Alu repeat present only in human BCHE. One single transcription start site was found in bot...
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Published in: | The Journal of biological chemistry 1994-08, Vol.269 (33), p.20829-20837 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Two kilobase segments of the 5'-untranslated regions of the human and rabbit butyrylcholinesterase (BCHE) genes were characterized.
The sequences shared extensive identity except for a 333-base pair (bp) Alu repeat present only in human BCHE. One single
transcription start site was found in both genes with the techniques of primer extension, amplification of the 5'-end of mRNA,
and RNase protection. Cap sites in human and rabbit BCHE genes were found in strictly homologous positions. In human BCHE,
the transcription start site was found 157 bp upstream of Met-28, the translation start site. Potential regulatory elements
in both promoters included one AP1 site and multiple sites for topoisomerase, Oct-1 and PEA-3. Transient expression of BCHE-reporter
gene constructs showed that a 194-bp fragment of the 5'-flanking region of human BCHE and a 570-bp fragment of rabbit BCHE
were sufficient for promoting chloramphenicol acetyltransferase activity in HeLa cells. No consensus TATA and CAAT boxes were
found. However, the sequence around the transcription start site exhibited homology with initiator elements found in other
TATA-less promoters in developmentally regulated genes. |
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ISSN: | 0021-9258 1083-351X |
DOI: | 10.1016/S0021-9258(17)31897-5 |