title: Nucleotide sequence and characterization of the 39K gene region of Autographa californica nuclear polyhedrosis virus.
abstract: The complete nucleotide sequence of the Pstl-K fragment of the Autographa californica nuclear polyhedrosis virus (AcMNPV) genome was determined. This region of the genome contains the delayed early 39K gene and V-ubi, a viral protein with homology to ubiquitine. In addition, Pstl-K potentially encodes five other proteins. Hybrid-select translation mapped nine viral-specific proteins to this fragment. Three proteins were observed with both early and late RNA; two of them comigrated with proteins directed by transcripts made from the 39K open reading frame (ORF). One protein which was only seen with hybrid-selected late RNA comigrated with ubiquitin. A correction of previously published sequence data indicates that there is an additional AUG codon upstream of the 39K ORF. This AUG codon is located 8 nucleotides downstream of the early transcription initiation site. The methionine codon is followed by codons for three amino acids and a termination codon. The 39K ORF is located 102 nucleotides downstream of the minicistron. In vitro transcription-translation experiments confirmed that the downstream AUG serves as the initiation codon for the 39K ORF. Radioimmunoprecipitation experiments indicated that the Pstl-K-encoded 39K protein reacted with antiserum raised against a previously described nuclear matrix-associated 39K protein.
authors.affiliation: Department of Entomology, Texas Agricultural Experiment Station, College Station.
authors.forename: L A
authors.initials: LA
authors.lastname: Guarino
authors.forename: M W
authors.initials: MW
authors.lastname: Smith
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D005814:Genes, Viral; D007304:Insect Viruses / Q000235:genetics*; D007313:Insecta; D008969:Molecular Sequence Data; D008970:Molecular Weight; D014176:Protein Biosynthesis; D015183:Restriction Mapping; D014158:Transcription, Genetic; D014764:Viral Proteins / Q000235:genetics
chemical_list: D014764:Viral Proteins