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Rabies Virus (RABV)
2026-09-02 15

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Rabies Virus (RABV)

Viral Structure, Key Antigen Targets and Research Applications

RABV virion structure(DOI: 10.1126/science.1181766)

Overview

Rabies virus (RABV) is an enveloped, bullet-shaped, negative-sense, single-stranded RNA virus belonging to the genus Lyssavirus within the family Rhabdoviridae. It is the principal causative agent of rabies, a severe zoonotic disease that affects mammals and can cause fatal encephalitis after the onset of clinical symptoms.

The RABV genome is approximately 12 kb in length and encodes five major structural proteins: nucleoprotein (N), phosphoprotein (P), matrix protein (M), glycoprotein (G), and large protein (L). These proteins coordinate viral entry, transcription, genome replication, assembly, budding, and interactions with host cells.

RABV research focuses on viral neurotropism, replication mechanisms, host–virus interactions, antigenicity, immune responses, and vaccine development. Among the viral proteins, G and N are particularly important research targets because of their roles in viral entry, antigen recognition, and host immune responses.

The glycoprotein (G) is the major surface antigen and neutralizing antibody target, while the nucleoprotein (N) is widely used for diagnostic detection and serological studies.

RABV Structure

Rabies virus has a characteristic bullet-shaped virion surrounded by a lipid envelope. The viral envelope contains trimeric glycoprotein (G) spikes, which mediate interactions with host cells and play a central role in viral entry. Beneath the envelope, the matrix protein (M) connects the viral membrane with the nucleocapsid. The viral RNA genome is tightly associated with nucleoprotein (N), forming a ribonucleoprotein complex together with phosphoprotein (P) and the large polymerase protein (L). This complex provides the functional machinery required for viral transcription and genome replication.

Key RABV Research Targets

Glycoprotein (G) Key Target
RABV glycoprotein is the major surface antigen of the virus and the primary viral protein exposed on the surface of the enveloped virion. It mediates viral attachment and entry into host cells and contributes to viral tropism and neuroinvasion. G protein is also the major target of virus-neutralizing antibodies and is therefore widely studied in research on antigenicity, neutralization, antibody responses, and rabies vaccine development.
Applications: Neutralization · Antigenicity · Antibody responses · Vaccine development
Neutralization Antigenicity Antibody Vaccine
Nucleoprotein (N) Diagnostic
Nucleoprotein encapsidates the viral RNA genome and forms the structural core of the ribonucleoprotein complex. By associating with viral RNA, N protects the genome and provides the framework required for viral transcription and replication. Its abundance and immunogenicity make N an important target for RABV antigen detection, serological studies, molecular virology, and vaccine research.
Applications: Antigen detection · Serology · Molecular virology · Vaccine research
Detection Serology Replication Vaccine
Phosphoprotein (P) Polymerase Cofactor
Phosphoprotein functions as an essential cofactor of the viral RNA-dependent RNA polymerase. It interacts with both N and L proteins and plays a central role in viral transcription and genome replication. P protein is also involved in modulation of host antiviral responses, making it a useful target for studies of RABV replication, host–virus interactions, and immune evasion.
Applications: Viral replication · Transcription · Host–virus interaction · Immune evasion
Replication Transcription Host interaction
Matrix Protein (M) Assembly
Matrix protein is positioned between the viral envelope and nucleocapsid and plays a key role in virion assembly and budding. It interacts with the viral ribonucleoprotein complex and the cytoplasmic domain of G protein to coordinate the formation of mature viral particles. M protein is therefore an important target for research into RABV assembly, budding, and host–virus interactions.
Applications: Viral assembly · Budding · Host–virus interaction
Assembly Budding Host interaction
Large Protein (L) Polymerase
The L protein is the catalytic component of the RABV RNA-dependent RNA polymerase complex. Together with P protein, it drives viral mRNA transcription and genome replication. Studies of L protein provide insights into the molecular mechanisms of RABV RNA synthesis and replication and may contribute to the development of antiviral strategies.
Applications: RNA synthesis · Replication · Antiviral research
RNA synthesis Replication Antiviral

Key Research Targets

Target Key Features Research Applications
Glycoprotein (G) Major surface antigen; mediates viral attachment and entry Neutralization, antigenicity, antibody and vaccine research
Nucleoprotein (N) Encapsidates viral RNA and forms the RNP complex Antigen detection, serology, replication and vaccine research
Phosphoprotein (P) Polymerase cofactor involved in RNA synthesis Viral replication, transcription and host–virus interaction studies
Matrix Protein (M) Connects the RNP complex with the viral envelope Viral assembly, budding and host–virus interaction studies
Large Protein (L) Catalytic component of the viral RNA polymerase RNA synthesis, replication and antiviral research
Note: Glycoprotein G is the principal target for neutralizing antibodies and vaccine development, while nucleoprotein N is widely used for diagnostic antigen detection and serological monitoring.

AntibodySystem RABV Research Products

RABV Antigens

Cat. No. Product Name
EVV03501 Recombinant Rabies virus G/Glycoprotein Protein, C-His
YVV03901 Recombinant Rabies virus/RABV G/Glycoprotein Protein, N-His

RABV Antibodies

Cat. No. Product Name
RVV03501 Anti-Rabies virus G/Glycoprotein Antibody (17C7)

RABV ELISA Kits

Cat. No. Product Name
KVV02301 Rabies virus (RABV) Nucleocapsid (NP) ELISA Kit

AntibodySystem — Reliable Reagents for RABV Research

AntibodySystem offers high-quality recombinant proteins, antibodies, and ELISA kits to support rabies virus antigen characterization, antibody screening, vaccine studies, immune response analysis, and diagnostic assay development.

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