Molecular Biotechnology

, Volume 43, Issue 2, pp 154–161

Expression of Protein Complex Comprising the Human Prorenin and (Pro)Renin Receptor in Silkworm Larvae Using Bombyx mori Nucleopolyhedrovirus (BmNPV) Bacmids for Improving Biological Function

  • Dongning Du
  • Tatsuya Kato
  • Fumiaki Suzuki
  • Enoch Y. Park
Research

DOI: 10.1007/s12033-009-9183-7

Cite this article as:
Du, D., Kato, T., Suzuki, F. et al. Mol Biotechnol (2009) 43: 154. doi:10.1007/s12033-009-9183-7

Abstract

Three forms of recombinant protein complexes comprising the human prorenin (hPro) and (pro)renin receptor (hPRR) (hPRR/prorenin) were successfully expressed in the silkworm larvae using Bombyx mori nucleopolyhedrovirus (BmNPV) bacmids. They were localized in the fat body cells and formed a prorenin-bound hPRR complex. The expressed levels of hPro and hPRR were similar judging from Western blotting. The hPRR/prorenin complex containing 40 μg of hPRR (yield, 43%) and 30 μg of hPro (yield, 34%) was purified from 15 silkworm larvae by a series of purification using anti-FLAG and Strep-Tactin affinity chromatography. The renin activity of the purified hPRR/prorenin complex was 3.8-fold that of the mixture of hPRR and hPro expressed individually in vitro judging from the renin assay. These results show that the unstable transmembrane protein, hPRR, was coexpressed stably with ligand, hPro, and formed a stable protein, hPRR/prorenin complex that showed a high catalytic active form.

Keywords

SilkwormBombyx mori nucleopolyhedrovirusBacmid(Pro)renin receptorProrenin/(pro)renin receptor complex

Copyright information

© Humana Press 2009

Authors and Affiliations

  • Dongning Du
    • 1
  • Tatsuya Kato
    • 2
  • Fumiaki Suzuki
    • 3
  • Enoch Y. Park
    • 1
    • 2
  1. 1.Integrated Bioscience Section, Graduate School of Science and TechnologyShizuoka UniversityShizuokaJapan
  2. 2.Faculty of AgricultureShizuoka UniversityShizuokaJapan
  3. 3.Faculty of Applied Biological ScienceGifu UniversityGifuJapan