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BOWDITCH LECTURE
Johannes-Müller-Institut für Physiologie Humboldt-University Berlin, Charité, 10783 Berlin, Germany
Studies published recently have considerably enhanced our understanding of
the mechanisms controlling renin production. With regard to the control of
renin transcription, two enhancer regions have been identified that markedly
augment renin synthesis in cell lines. In the absence of this enhancer
activity, the basic promoter of the renin gene increases transcription only
two- to threefold. The location of one (Jones CA, Sigmund CD, McGowan RA,
Kane-Haas CM, and Gross KW. Mol Endocrinol 4: 375-383, 1990)
transcription enhancer in the mouse gene is at about -2.7 kb and in humans at
roughly -11 kb. A second important region has been identified in a chorionic
cell line to be located
5 kb upstream of the transcription start site in
humans. Another potentially important regulatory region may lie within
3.9 kb upstream of the -11 kb enhancer, as suggested by several conserved
sequences among species in this region. In addition to the control of renin
transcription, it seems that renin translation and the stability of renin mRNA
are also effectively regulated. This occurs via the 3'-untranslated
region, to which several proteins can bind. The binding proteins were
identified as hnRNP K and E1, dynamin, nucleolin, MINT homologous protein, and
Y-Box 1.
transcription; posttranscriptional regulation; mRNA stability; mRNA-binding proteins; 3'-untranslated region
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