Cho Dae-Yeon, Yang Gi-Hyeok, Ryu Chun Jeih, Hong Hyo Jeong
Antibody Engineering Research Unit, Laboratory of Immunology, Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon 305-600, Korea.
J Virol. 2003 Feb;77(4):2784-8. doi: 10.1128/jvi.77.4.2784-2788.2003.
The proper folding and assembly of viral envelope proteins are mediated by host chaperones. In this study, we demonstrated that an endoplasmic reticulum luminal chaperone GRP78/BiP bound specifically to the pre-S1 domain of the L protein in vitro and in vivo where complete viral particles were secreted, suggesting that GRP78/BiP plays an essential role in the proper folding of the L protein and/or assembly of viral envelope proteins.