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• W2021107776 endingPage "15397" @default.
• W2021107776 startingPage "15391" @default.
• W2021107776 abstract "Prohormone convertases are involved in the tissue-specific endoproteolytic processing of prohormones and neuropeptide precursors within the secretory pathway. In the present study, we have isolated genomic clones comprising the 5′-terminal region of the human prohormone convertase 1 (PC1) gene and identified and characterized the PC1 promoter region. We found multiple transcription start sites located within a 15-base pair region, 205 base pairs upstream of the translation start codon. The promoter region is not G+C-rich and does not contain a canonical TATA box nor a CAAT box. Transient expression assays with a set of human PC1 gene fragments containing progressive 5′ deletions demonstrate that the proximal promoter region is capable of directing high levels of neuroendocrine-specific expression of reporter gene constructs. In addition, the proximal promoter region confers both basal and hormone-regulated promoter activity. Site-specific mutagenesis experiments demonstrate that two closely spaced cAMP response elements within the proximal promoter region direct cAMP-mediated hormonal regulation of transcription of the PC1 gene. Prohormone convertases are involved in the tissue-specific endoproteolytic processing of prohormones and neuropeptide precursors within the secretory pathway. In the present study, we have isolated genomic clones comprising the 5′-terminal region of the human prohormone convertase 1 (PC1) gene and identified and characterized the PC1 promoter region. We found multiple transcription start sites located within a 15-base pair region, 205 base pairs upstream of the translation start codon. The promoter region is not G+C-rich and does not contain a canonical TATA box nor a CAAT box. Transient expression assays with a set of human PC1 gene fragments containing progressive 5′ deletions demonstrate that the proximal promoter region is capable of directing high levels of neuroendocrine-specific expression of reporter gene constructs. In addition, the proximal promoter region confers both basal and hormone-regulated promoter activity. Site-specific mutagenesis experiments demonstrate that two closely spaced cAMP response elements within the proximal promoter region direct cAMP-mediated hormonal regulation of transcription of the PC1 gene." @default.
• W2021107776 created "2016-06-24" @default.
• W2021107776 creator A5040747801 @default.
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• W2021107776 date "1995-06-01" @default.
• W2021107776 modified "2023-10-05" @default.
• W2021107776 title "Neuroendocrine-specific Expression of the Human Prohormone Convertase 1 Gene" @default.
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• W2021107776 doi "https://doi.org/10.1074/jbc.270.25.15391" @default.
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