期刊
INSECT SCIENCE
卷 16, 期 3, 页码 227-236出版社
WILEY
DOI: 10.1111/j.1744-7917.2009.01252.x
关键词
cloning; gene expression; parasitism; Pieris rapae; Pteromalus puparum; storage protein
类别
资金
- National Basic Research and Development Program of China [2006CB102005]
- National Nature Science Foundation of China [30571251, 30671825]
- Ministry of Education of China [NCET-05-0513, IRT0535]
This report presents the cDNA cloning of a storage protein, PraAry, from Pieris rapae and investigates its expression regulated by parasitism of an endoparasitoid wasp Pteromalus puparum. The full-length cDNA of PraAry is 2 270 nucleotides and contains a 2 121 nucleotide open reading frame encoding 707 amino acids with calculated molecular weights of approximately 83 kDa. Analysis of the primary protein sequence revealed that it possesses a signal peptide of 16 amino acids at the N-terminus and contains two highly conserved storage protein signature motifs. According to both phylogenetic analysis and the criteria for amino acid composition, PraAry belongs to the subfamily of arylphorin-type storage protein (1.42% methionine and 18.82% aromatic amino acids). Reverse transcription - polymerase chain reaction analysis indicated that the transcriptional level of PraAry mRNA in P. rapae pupae fat body is inducible in response to parasitism by P. puparum.
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