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Molecular Cloning and Characterization of Chymotrypsin Inhibitor and Chitin-Binding Protein Homologs from the Bumblebee Bombus terrestris

  • Qiu, Yuling (College of Natural Resources and Life Science, Dong-A University) ;
  • Yoon, Hyung-Joo (Department of Agricultural Biology, National Academy of Agricultural Science) ;
  • Jin, Byung-Rae (College of Natural Resources and Life Science, Dong-A University)
  • 투고 : 2012.08.21
  • 심사 : 2012.09.07
  • 발행 : 2012.09.30

초록

The bumblebee Bombus terrestris is widely used in greenhouses to pollinate crops. Here, we report the molecular cloning and characterization of chymotrypsin inhibitor and chitin-binding protein homologs from B. terrestris. Two cDNAs encoding chymotrypsin inhibitor (Bt-CI) and chitin-binding protein (Bt-CBP) homologs were cloned from B. terrestris. Gene sequence analysis showed that Bt-CI gene consists of three exons encoding 75 amino acids, including a predicted 20-amino acid signal peptide, while Bt-CBP consists of two exons encoding 78 amino acids, including a predicted 26-amino acid signal peptide. The mature Bt-CI and Bt-CBP peptides contain ten and six conserved cysteine residues, respectively. Database searches using the deduced sequences of Bt-CI and Bt-CBP showed similarity to those from B. impatiens (96% peptide sequence identities). Bt-CI and Bt-CBP were expressed in both the venom gland and fat body of B. terrestris worker bees. The recombinant Bt-CI and Bt-CBP peptides were expressed in baculovirus-infected insect cells. Taken together, our findings describe the molecular characterization of Bt-CI and Bt-CBP from B. terrestris.

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피인용 문헌

  1. A bumblebee (Bombus ignitus) venom serine protease inhibitor that acts as a microbial serine protease inhibitor vol.167, 2014, https://doi.org/10.1016/j.cbpb.2013.10.002
  2. Anti-elastolytic activity of a honeybee (Apis cerana) chymotrypsin inhibitor vol.430, pp.1, 2013, https://doi.org/10.1016/j.bbrc.2012.11.056
  3. Infection by the castrating parasitic nematode Sphaerularia bombi changes gene expression in Bombus terrestris bumblebee queens vol.29, pp.2, 2012, https://doi.org/10.1111/imb.12618