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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Proteins: Structure, Function, and Genetics 5 (1989), S. 259-265 
    ISSN: 0887-3585
    Keywords: cDNA expression ; deletion mutagenesis ; zymogen activation ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Cultured mouse myeloma cells were transfected with expression vectors encoding the aspartyl proteinase, human renin. The full construct, encoding the renin precursor prorenin, allows transfected cellsto secrete the enzymically inactive pro-protein. Activity is detectable only following trypsin treatment which mimics the physiological activation step. Accordingly, it appears that myeloma cells do not contain detectable levels of an appropriate activating proteinase. However, when these cells are transfected with a construct from which the pro-peptide coding sequence has been deleted, they secrete an apparently fully active enzyme which is indistinguishable from mature renin. We conclude that expression of the pro-peptide is not necessary to allow correct folding of the molecule and its passage through the secretory pathway.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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