Abstract
A cDNA clone encoding bovine scrapie-associated fibril protein, PrP, from a bovine brain cDNA library and six amplified genomic DNA clones of bovine PrP were characterized. These clones possessed specific characteristics observed in other animal PrP genes. However, the bovine PrP was divided into two types by the number of repeats. One possessed four octapeptide repetitive sequences, like other animal PrP genes, and consisted of 256 amino acids; the other had five such repetitive sequences and 264 amino acids. The amino acid sequence of the former bovine PrP agreed with that of sheep PrP up to the 165th amino acid from the N-terminus. Bovine PrP cDNA introduced into mouse L-929 cells were stably expressed. The expression level of recombinant bovine PrP in the cells judged by immunofluorescence was higher than that of authentic mouse PrP. The recombinant PrP comigrated with authentic bovine PrP in SDS-polyacrylamide gel electrophoresis, suggesting that the recombinant product was fully glycosylated in L-929 cells. Distinct bundles of the intermediate filaments were frequently seen at the perinuclear region of the cells.
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The nucleotide sequence data reported in this paper have been submitted to the GenBank Nucleotide Sequence Databases and have been assigned the accession numbers D90545-47.
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Yoshimoto, J., Iinuma, T., Ishiguro, N. et al. Comparative sequence analysis and expression of bovine PrP gene in mouse L-929 cells. Virus Genes 6, 343–356 (1992). https://doi.org/10.1007/BF01703083
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DOI: https://doi.org/10.1007/BF01703083