Zhao Q, Mathur S, Burger L R, Pintel D J
Department of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Columbia 65212, USA.
J Virol. 1995 Sep;69(9):5864-8. doi: 10.1128/JVI.69.9.5864-5868.1995.
When the minute virus of mice NS2-specific exon was modified by either substitution or deletion, most P4-generated pre-mRNA was spliced from the large-intron donor at nucleotide 514 to the small-intron acceptor at nucleotide 2377. Improvement to consensus of large-intron splice sites in such mutants did not suppress exon skipping or restore large-intron excision. Therefore, sequences within the NS2-specific exon are required for inclusion of this exon into spliced, steady-state minute virus of mice RNA.
当小鼠微小病毒NS2特异性外显子通过替换或缺失进行修饰时,大多数由P4产生的前体mRNA从核苷酸514处的大内含子供体剪接到核苷酸2377处的小内含子受体。此类突变体中大内含子剪接位点的一致性改善并未抑制外显子跳跃或恢复大内含子切除。因此,NS2特异性外显子内的序列是该外显子包含在剪接的、稳定状态的小鼠微小病毒RNA中的必需条件。