Temporal Expression of the AcMNPVlef-4Gene and Subcellular Localization of the Protein
1998
Abstract Autographa californica nucleopolyhedrovirus (AcMNPV) lef-4 gene [ORF 90; Ayres et al. (1994) Virology 202, 586–605] is involved in both late and very late gene expression [Passarelli and Miller (1993) Virology 197, 704–714]. The transcriptional properties of this gene have been analyzed. It is transcribed as a single 1.6-kb mRNA and transcripts were first detected 3 h postinfection (pi). The extremities of the transcript have been mapped by primer extension and 3′ RACE–PCR to positions −56 from the translation start codon and +96 downstream of the stop codon. A rabbit polyclonal antiserum has been raised against an internal polypeptide of LEF-4. A 55-kDa protein was observed by Western blot analysis from 5 h pi. LEF-4 localizes preferentially in the nucleus of infected cells and is associated with the virogenic stroma.
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