Serine Palmitoyltransferase (scs1/lcb2) Mutants have Elevated Copy Number of the L-A dsRNA Virus
✍ Scribed by GARNEPUDI, VARSHA R.; ZHAO, CHUN; BEELER, TROY; DUNN, TERESA
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 378 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0749-503X
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✦ Synopsis
The microsomal fraction isolated from serine palmitoyltransferase (lcb2/scs1) mutants is enriched in a 90 kDa protein. The protein was identified as the major coat (Gag) protein of the L-A dsRNA virus particles by partial sequencing and by its interaction with anti-Gag antibodies. The total amount of Gag in whole-cell lysates of scs1/lcb2 mutant cells is greater than in wild-type lystes indicating that the enrichment of the protein in the microsomal fraction of scs1/lcb2 mutant cells may result from increased copy number of the L-A dsRNA virus. This is supported by the finding that the mutants also have increased levels of L-A dsRNA. Altered sphingolipid synthesis in the scs1 mutant cells appears to increase the copy number of the L-A viral particles. ( 1997 by