Protobacilladnavirus (taxid:2169610)



Non-enveloped virion, icosahedral virus.



Circular ssDNA genome of about 5-6 kb that is partially double stranded on about 800bp. Encodes for 3 proteins.





  1. Virus penetrates into the host cell.
  2. Uncoating, the viral ssDNA genome penetrates into the nucleus.
  3. Viral ssDNA is converted into dsDNA with the participation of cellular factors. dsDNA transcription gives rise to viral mRNAs.
  4. Viral mRNAs are translated to produce viral proteins.
  5. Replication may be mediated by a Rep protein, and would occur by rolling circle producing ssDNA genomes.
  6. 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

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3 entries grouped by strain

3 entries

Chaetoceros protobacilladnavirus 2 (Chaetoceros sp. DNA virus 7) reference strain

CAPSD_CPBDV Capsid protein (Viral protein 2) (VP2)
REP_CPBDV Replication-associated protein (Rep) (Viral protein 3) (VP3)
VP1_CPBDV Viral protein 1 (VP1)
These structures were created with the help of Colabfold by Jason Nomburg, Nathan Price and Jennifer Doudna (ModelArchive).

Amphibola crenata associated bacilladnavirus 1 taxid:1941435

Protein ModelArchive
Replication associated protein ma-jd-viral-20987
p1 ma-jd-viral-28950
p2 ma-jd-viral-66995
p3 ma-jd-viral-52001

Amphibola crenata associated bacilladnavirus 2 taxid:1941436

Protein ModelArchive
Replication-associated protein ma-jd-viral-20989
p1 ma-jd-viral-28949
p2 ma-jd-viral-55822
p3 ma-jd-viral-52002

Chaetoceros protobacilladnavirus 2 taxid:3052702

Protein ModelArchive
Capsid protein (Viral protein 2) (VP2) ma-jd-viral-28952
Replication-associated protein (Rep) (Viral protein 3) (VP3) ma-jd-viral-41952
Viral protein 1 (VP1) ma-jd-viral-48762