Non-enveloped, T=1 icosahedral symmetry, with a diameter of about 30-32nm.


Circular ssDNA genome (-) genome of about 3.8 kb.
The genome is replicated through double-stranded intermediates. It may encode for 4 proteins: ORF1 (Rep protein?), ORF2, ORF3 and ORF4.


The proteins are expressed by alternative splicing of pre-mRNA.



# Virus penetrates into the host cell. # Uncoating, the viral ssDNA genome penetrates into the nucleus. # The ssDNA is converted into dsDNA with the participation of cellular factors. dsDNA transcription gives rise to viral mRNAs. # viral mRNAs are transcribed and translated to produce viral proteins. # Replication may be mediated by a “Rep-like” protein, and would occur by rolling circle producing ssDNA genomes. # These newly synthesized ssDNA can either
a) be converted to dsDNA and serve as a template for transcription/replication
b) be encapsidated by capsid protein and form virions released by cell lysis.

Matching UniProtKB/Swiss-Prot entries

3 entries grouped by strain (browse by keywords)

3 entries

Torque teno tupaia virus (isolate Tbc-TTV14) reference strain

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CAPSD_TTVD1Capsid protein
ORF2_TTVD1Uncharacterized ORF2 protein
ORF3_TTVD1Uncharacterized ORF3 protein