Chlorovirus (taxid:181083)



Enveloped virion of which the membrane is surrounded by a capsid with an icosahedral symmetry (T=169), 100-220 nm in diameter. Dense material are present at each 5-fold symmetry vertex
Source: Van Etten 2003 (Pubmed)


Linear, dsDNA genome of about 330 kb with crosslinked hairpin ends. PBCV-1 genome encode for approximately 700 ORFs.





  1. Virus attaches to host receptors , inducing release of viral genome into the cell.
  2. Migration of the DNA core to the nucleus?
  3. Synthesis of early proteins.
  4. Replication of genomic DNA..
  5. Late proteins synthesis, assembly of new virions in the cytoplasm
  6. Cell lysis and virion release in the extracellular space.

Matching UniProtKB/Swiss-Prot entries

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23 entries grouped by strain

16 entries

Paramecium bursaria Chlorella virus 1 (PBCV-1) reference strain

MCE_PBCV1 mRNA-capping enzyme (GTP--RNA guanylyltransferase) (mRNA guanylyltransferase) (EC
THYX_PBCV1 Probable flavin-dependent thymidylate synthase (FDTS) (EC (FAD-dependent thymidylate ...
DPOL_PBCV1 DNA polymerase (EC
MCP_PBCV1 Major capsid protein (MCP) (VP54)
SODC_PBCV1 Superoxide dismutase [Cu-Zn] (EC
DUT_PBCV1 Deoxyuridine 5'-triphosphate nucleotidohydrolase (dUTPase) (EC (dUTP pyrophosphatase)
PCNA2_PBCV1 Probable DNA polymerase sliding clamp 2 (Proliferating cell nuclear antigen homolog 2) (PCNA 2)
A625_PBCV1 Putative transposase A625R
T2C2_PBCV1 Type II restriction enzyme CviAII (R.CviAII) (EC (Endonuclease CviAII) (Type-2 restriction ...
MTC2_PBCV1 Type II methyltransferase M.CviAII (M.CviAII) (EC (Adenine-specific methyltransferase ...
PCNA1_PBCV1 Probable DNA polymerase sliding clamp 1 (Proliferating cell nuclear antigen homolog 1) (PCNA 1)
KCV_PBCV1 Potassium channel protein kcv
Y494R_PBCV1 Putative transcription factor A494R
Y284L_PBCV1 Uncharacterized protein A284L
Y445_PBCV1 Uncharacterized protein A445L
A464_PBCV1 Putative protein A464R

1 entry

Paramecium bursaria Chlorella virus NY2A (PBCV-NY2A) reference strain

Y663R_PBCVN Putative transcription factor B663R

2 entries

Paramecium bursaria Chlorella virus IL3A (PBCV-IL3A)

MTC1_PBCVI Type II methyltransferase M.CviJI (M.CviJI) (EC (Cytosine-specific methyltransferase ...
T2C1_PBCVI Type II restriction enzyme CviJI (R.CviJI) (EC (Endonuclease CviJI) (Type-2 restriction ...

2 entries

Paramecium bursaria Chlorella virus NC1A (PBCV-NC1A)

MTC3_PBCVC Modification methylase CviBIII (M.CviBIII) (EC (Adenine-specific methyltransferase ...
MTC1_PBCVC Type II methyltransferase M.CviBI (M.CviBI) (EC (Adenine-specific methyltransferase CviBI) ...

1 entry

Paramecium bursaria Chlorella virus NY2A (PBCV-NY2A)

DPOL_PBCVN DNA polymerase (EC

1 entry

Paramecium bursaria Chlorella virus XZ-6E (PBCV-XZ-6E)

MTR1_PBCVX Type II methyltransferase M.CvrRI (M.CviRI) (EC (Adenine-specific methyltransferase CviRI) ...