EBOV

EBOV Full Name

Zaire Ebola Virus

EBOV Introduction

The Ebola virus (EBOV) is a member of the Filoviridae family and is responsible for severe hemorrhagic fever with high mortality rates in humans. EBOV has a linear, non-segmented single-stranded RNA genome approximately 19 kb in length, encoding seven structural proteins essential for the viral life cycle: nucleoprotein (NP), polymerase (L), glycoprotein (GP), and matrix proteins VP24, VP30, VP35, and VP40. NP is critical for encapsulating the viral RNA genome and forming the viral nucleocapsid, a key component in viral stability and replication. The nucleocapsid structure, formed by interactions of NP with other viral proteins such as VP35 and VP40, plays an essential role in both transcription and replication of the viral RNA.

Figure 1. Schematic diagram of the Ebola virus structure.

NP is intrinsically disordered and exhibits a unique structure that allows it to adapt during various stages of the EBOV life cycle. NP not only encapsidates the viral genome but also regulates interactions with other viral proteins, influencing the switch from RNA synthesis to virion assembly and budding. NP also modulates immune responses by sequestering immune factors, such as interferon regulatory factor 3 (IRF3), contributing to the virus's ability to evade host defenses. This immunosuppressive property highlights its significance as a target for antiviral drug development and therapeutic interventions.

Recognition of NP's role in EBOV pathogenesis has spurred interest in developing targeted therapies that inhibit its function. Small molecule inhibitors that disrupt NP interactions can reduce viral replication, demonstrating the potential of targeting NP as an antiviral strategy. Advances in vaccine development using NP as an immunological target may provide protective responses against EBOV infection. Continued research on NP's structure and function will enhance understanding of its multifaceted role in the viral lifecycle and its interactions with host immunity, supporting the development of effective prevention and treatment measures.

Alternate Names for EBOV

Ebola virus; EBOV; Zaire ebolavirus; Zaire Ebola Virus; ebolavirus

• 1. Leung et al. An Intrinsically Disordered Peptide from Ebola Virus VP35 Controls Viral RNA Synthesis by Modulating Nucleoprotein-RNA Interactions. Cell Reports. 2015;13(3):1176-1185.
  2. Wu et al. The two-stage interaction of Ebola virus VP40 with nucleoprotein results in a switch from viral RNA synthesis to virion assembly/budding. Protein & Cell. 2020;11(1):45-58.
  3. Zhu et al. Ebola virus sequesters IRF3 in viral inclusion bodies to evade host antiviral immunity. Elife. 2024.