Activation of a cryptic splice site in the tax gene of HTLV-I by a single nucleotide change.

Abstract excerpt

We identified a T-to-C mutation 2 nucleotides (nt) upstream from the AG in a GT-AG intron between exons 2 and 3 in the human T-cell leukemia virus type I (HTLV-I) tax mRNA. This mutation resulted in the preferential usage of an alternative splice site, causing a 75-nt elongation of tax mRNA and reduced production of viral antigens. When the clone containing this T-to-C mutation was reverted to the wild-type (T)...

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