Mizutani T, Ishida K, Maeda A, Hayashi M, Watanabe T, Namioka S
Department of Laboratory Animal Science, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan.
J Vet Med Sci. 1994 Oct;56(5):1013-5. doi: 10.1292/jvms.56.1013.
Two additional small RNAs, named mRNA8 and 9, are transcribed from mouse hepatitis virus (MHV) in virus-infected mouse DBT cells. This report shows that the small mRNAs (mRNA8 and 9) were observed at 3 hr post infection (p.i.) in DBT cells infected with the JHM strain of MHV. This result suggested that products from mRNA8 and 9 may play a role in the early stage of the viral replication cycle in the infected DBT cells. The mRNA8 is initiated from a perfectly conserved intergenic site, but mRNA9 is from an imperfectly conserved intergenic sequence. Since mRNA8 and 9 were found in the liver and brain of an infected mouse, it was suggested that the imperfect intergenic sequence of MHV may serve as an initiation site for leader-primed transcription in vivo.
