To determine the pattern of alternative splicing at the 5' end of class I genes, the 3' splice sites bordering exon 2 of the H-2D(d) and H-2K(d) genes were mutated from AG to GG (H-2D(d)) or CG (H-2K(d)). The mutant genes were transfected into L cells, and RNA from clones expressing these Ag was used for analysis by RNase and S1 nuclease mapping techniques. The first intervening sequence of both class I genes contains several potential 3' splice acceptor sites. However, a clear preference for only one site was detected in each of the H-2D(d) and H-2K(d) mRNA. Examination of the endogenous H-D(d) and H-2K(d) class I transcripts in normal murine tissues and in tumors demonstrated that the alternatively spliced mRNAs were produced, but at a low frequency. Infection of transfected L cells or tumor lines with vesicular stomatitis virus altered the level of differentially spliced message in these cells.
|Original language||English (US)|
|Number of pages||8|
|Journal||Journal of Immunology|
|State||Published - Jan 1 1989|
ASJC Scopus subject areas
- Immunology and Allergy