Structures and Functional Diversities of ASFV Proteins

Area of Science:

• Virology
• Structural Biology
• Molecular Biology

Background:

• African swine fever virus (ASFV) is a highly contagious, double-stranded DNA virus responsible for a devastating epidemic.
• ASFV possesses a complex structure with multiple protein layers and a large genome, contributing to its high pathogenicity and nearly 100% mortality rate in swine.
• Despite its complexity, the structural and functional roles of most ASFV proteins remain poorly understood.

Purpose of the Study:

• To consolidate and present all ASFV proteins with elucidated structures.
• To explain the functions of these proteins from a structural perspective.
• To enhance the understanding of ASFV's replication, survival, and host immune evasion mechanisms.

Main Methods:

• Literature review and data compilation of ASFV protein structures.
• Analysis of structural data to infer protein functions.
• Integration of structural information with known ASFV biology.

Main Results:

• Detailed structural information for key ASFV proteins including AP endonuclease, dUTPases (E165R), pS273R protease, core shell proteins (p15, p35), and major capsid protein p72 (B646L).
• Structural insights into non-structural proteins (pA151R, pNP868R, A179L, pA104R, pB119L), polymerase X, and ligase.
• Demonstration of how novel structural features and diverse protein functions contribute to ASFV's immune evasion and control challenges.

Conclusions:

• The structural elucidation of numerous ASFV proteins provides critical insights into the virus's complex molecular mechanisms.
• Understanding these structures is essential for developing effective strategies against ASFV.
• The intricate structural features of ASFV facilitate its survival and pathogenesis, highlighting the need for continued research.