Title |
Structural and biochemical insights into the V/I505T mutation found in the EIAV gp45 vaccine strain
|
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Published in |
Retrovirology, March 2014
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DOI | 10.1186/1742-4690-11-26 |
Pubmed ID | |
Authors |
Jiansen Du, Xuefeng Wang, Jing Ma, Jianxin Wang, Yuyin Qin, Chunhui Zhu, Fang Liu, Yiming Shao, Jianhua Zhou, Wentao Qiao, Xinqi Liu |
Abstract |
The equine infectious anemia virus (EIAV) is a lentivirus of the Retrovirus family, which causes persistent infection in horses often characterized by recurrent episodes of high fever. It has a similar morphology and life cycle to the human immunodeficiency virus (HIV). Its transmembrane glycoprotein, gp45 (analogous to gp41 in HIV), mediates membrane fusion during the infection. However, the post-fusion conformation of EIAV gp45 has not yet been determined. EIAV is the first member of the lentiviruses for which an effective vaccine has been successfully developed. The attenuated vaccine strain, FDDV, has been produced from a pathogenic strain by a series of passages in donkey dermal cells. We have previously reported that a V/I505T mutation in gp45, in combination with other mutations in gp90, may potentially contribute to the success of the vaccine strain. To this end, we now report on our structural and biochemical studies of the gp45 protein from both wide type and vaccine strain, providing a valuable structural model for the advancement of the EIAV vaccine. |
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