Tupavirus

VIRION

Enveloped, bullet shaped, about 140 to 160 nm long.

GENOME

Negative-stranded RNA linear genome, about 11.2 kb in size. Encodes for 7 proteins.

GENE EXPRESSION

The viral RNA dependent RNA polymerase binds the encapsidated genome at the leader region, then sequentially transcribes each genes by recognizing start and stop signals flanking viral genes. mRNAs are capped and polyadenylated by the L protein during synthesis.

REPLICATION

CYTOPLASMIC

  1. Attachement of the viral G glycoproteins to host receptors mediates Clathrin-mediated endocytosis of the virus into the host cell.
  2. Fusion of virus membrane with the vesicle membrane; ribonucleocapsid is released into the cytoplasm.
  3. Sequential transcription , viral mRNAs are capped and polyadenylated by polymerase stuttering in the cytoplasm.
  4. Replication presumably starts when enough nucleoprotein is present to encapsidate neo-synthetized antigenomes and genomes.
  5. The ribonucleocapsid binds to the matrix protein and buds via the host ESCRT complexes occurs at the plasma membrane, releasing new virions.

Matching UniProtKB/Swiss-Prot entries

7 entries grouped by strain (browse by keywords)

7 entries

Tupaia virus (isolate Tupaia/Thailand/-/1986) (TUPV) reference strain

Select_allDeselect_all
C_TUPVT Protein C
GLYCO_TUPVT Glycoprotein
L_TUPVT RNA-directed RNA polymerase L (Protein L) (Large structural protein) (Replicase) (Transcriptase) ...
SH_TUPVT Small hydrophobic protein (Protein SH)
MATRX_TUPVT Matrix protein
NCAP_TUPVT Nucleoprotein (NP) (Nucleocapsid protein) (Protein N)
PHOSP_TUPVT Phosphoprotein (P protein)