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报道了斜纹夜蛾核多角体病毒（Ｓｐｏｄｏｐｔｅｒａ ｌｉｔｕｒａ ｎｕｃｌｅｏｐｏｌｙｈｅｄｒｏｖｉｒｕｓ， ＳｐｌｔＮＰＶ）基因组ＤＮＡＸｂａＩ２．０ｋｂ片段的核苷酸全序列，该片段包括三个完整的读码框（ｏｐｅｎ ｒｅａｄｉｎｇ ｆｒａｍｅ， ＯＲＦ），即ＯＲＦ１、ＯＲＦ２、ＯＲＦ３及一个不完整的读码框ＯＲＦ４－ｐａｒｔ。ＯＲＦ１长４７７个核苷酸，可编码１５８个氨基酸的蛋白质，分子量１８．０８ ｋＤ，它与ＡｃＭＮＰＶ ＯＲＦ５１在同源区域内蒙基苷有１８％相同；ＯＲＦ２长５７０个核苷酸，可编码１８９个氨基酸的蛋白质，分子量为２１．６４ｋＤ，它与ＬｄＮＰＶｈｅｌｉｃａｓｅ２基因在同源区域内氨基酸有２２％相同；ＯＲＦ３长１６５个核苷酸，可编码５４个氨基酸的蛋白质，分子量为６．２３ｋＤ，它与已知的杆状病毒基因没有同源性，可能为杆状病毒的一个新基因；不完整的ＯＲＦ４－ｐａｒｔ长５５０个核苷酸，可编码１８３个氨基酸，它编码的氨基酸序列与ＡｃＭＮＰＶ 几丁质酶Ｃ端的氨基酸序列有较高的同源性，相同的氨基酸占５６％。在ＯＲＦ１、 ＯＲＦ２起始密码上游有什状病毒早期后动于基序ＣＡＧＴ，在ＯＲＦ３起始密码上游则有杆状病毒晚期启动子基序ＴＡ?
The complete nucleotide sequence of XbaI2.0kb fragment of Spodoptera litura nucleopolyhedrovirus (SpltNPV) genomic DNA was reported. This fragment contains three complete open reading frames (ORFs), ORF1, ORF2 , ORF3 and an incomplete reading frame ORF4-part. ORF1 is 477 nucleotides in length and encodes a protein of 158 amino acids with a molecular mass of 18.08 kD and is 18% identical to that of AcMNPV ORF51 in the homologous region. ORF2 is 570 nucleotides long and encodes 189 Amino acid protein with a molecular weight of 21.64kD, which is 22% homologous to the LdNPVhelicase2 gene in the homologous region; ORF3 is 165 nucleotides in length and encodes a protein of 54 amino acids with a molecular mass of 6.23 kD, The known baculovirus gene has no homology and may be a new gene of baculovirus. The incomplete ORF4-part is 550 nucleotides long and encodes a protein of 183 amino acids. The encoded ORF4-part encodes the amino acid sequence of AcMNPV chitin The amino acid sequence of C-terminal of the enzyme has high homology, the same amino acid accounts for 56%. In the ORF1, ORF2 start codon upstream of any virus in the early move in the motif CAGT, in the ORF3 start codon upstream of baculovirus late promoter motif TA?