SCIENTISTS have unraveled the three-dimensional structure of the African swine fever virus, laying a solid foundation for developing effective and safe vaccines against the disease.

The research, jointly conducted by scientists at the Institute of Biophysics of the Chinese Academy of Sciences (CAS), the Harbin Veterinary Research Institute of the Chinese Academy of Agricultural Sciences (CAAS), ShanghaiTech University and other institutes, was published in the latest issue of the academic journal Science.

Bu Zhigao, director of the Harbin Veterinary Research Institute of CAAS, said China is facing a great challenge in controlling the spread of African swine fever. It is urgent to develop a more powerful technology tool including a vaccine to prevent the disease.

“The new breakthrough in unveiling the fine structure of the virus is important fundamental research, which will provide clues to explore fundamental mechanisms for infection, pathogenicity and immunology of African swine fever, as well as vaccine development,” Bu said.

Scientists successfully isolated the epidemic strain of the African swine fever virus, which is spreading in China. It took the research team four months to collect over 100 TB of high-quality data.

The research showed the virus has a unique structure of five layers: the outer membrane, capsid, double-layer inner membrane, core-shell and genome.

It contains more than 30,000 protein subunits, forming a spherical particle with a diameter of about 260 nanometers.

The study identified structural proteins of the virus, revealing potential protective antigens and key information on the epitope, the part of an antigen molecule to which an antibody attaches itself. (Xinhua)