1887

Abstract

The picornavirus foot-and-mouth disease virus 2A sequence was combined with three different internal ribosome entry segments to construct and characterize three independent pentacistronic retroviruses of different sizes. Efficient co-expression of the five proteins was successful and titres obtained for these pentacistronic virus vectors (final genome size ∼7·9 kb) were comparable to those of vector systems with shorter genomes. Other vectors constructed that exceeded the genome length of the wild-type virus suffered frequent deletions.

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2003-05-01
2021-10-24
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