Skip to main content
ViralZone logo emblem ViralZone

Spounavirinae (taxid:857473)

VIRION

Non-enveloped, head-tail structure. The capsid is about 84-94 nm in diameter and has a T=16 icosahedral symmetry (Spounalikevirus) . The tail is 140-219 in length, contractile with globular structures at its tip, has 6 long terminal fibers, 6 short spikes and a double base plate.

GENOME

Linear, dsDNA genome of 130-160 kb, encoding for about 190-230 proteins.

GENE EXPRESSION

Genes are transcribed by operons.

ENZYMES

REPLICATION

CYTOPLASMIC

  1. Adsorption: the phage attaches to the target cell through its tail fibers.
  2. Ejection of the viral DNA into host cell cytoplasm by contraction of the tail sheath.
  3. Transcription and translation of early genes.
  4. Replication of viral DNA. Transcription and translation of late genes.
  5. Assembly of an empty procapsid and packaging of the genome.
  6. Viral tail fibers assembly and viral tail assembly.
  7. Mature virions are released from the cell by lysis.
DB LINKS image image

 image image

image
TAXONOMY Group I: dsDNA viruses
Realm: Duplodnaviria
Kingdom: Heunggongvirae
Phylum: Uroviricota
Class: Caudoviricetes
Order: Unassigned
Family: Herelleviridae
Subfamily: Spounavirinae
Genus: Okobuvirus
Siminovitchvirus
ETYMOLOGY Spouna: from SPO1, SPO plus "una" (latin for "one")
VIRUS
REFERENCE STRAINS Bacillus phage SPO1
Sequence | Genome assembly | Proteome
Enterococcus phage phiEF24C
Sequence | Genome assembly | Proteome
Staphylococcus phage Twort
Sequence | Genome assembly | Proteome

Host

NATURAL HOSTS Bacteria

Ecology and disease

GEOGRAPHY Worldwide
TRANSMISSION Passive diffusion through medium
ANTIVIRAL DRUGS None

Matching UniProtKB/Swiss-Prot entries

(all links/actions below point to uniprot.org website)

38 entries grouped by strain

6 entries

Bacillus phage SP01 (Bacteriophage SP01) reference strain

Select_allDeselect_all
TAD2_BPSP1 Thoeris anti-defense 2 (Tad2)

pdb 8SME; 8SMF; 8SMG; 8WJE

GP46_BPSP1 Inhibitor of histone-like protein HU (Gene 46 protein) (Gp46) (Gene product 46)

pdb 7BY7

GP56_BPSP1 Inhibitor of host cell division protein (Gene 56 protein) (Gp56)
DUHM_BPSP1 Deoxyuridylate hydroxymethyltransferase (Deoxyuridylate hydroxymethylase) (EC 2.1.2.-) (Gp29) (dUMP ...
PORTL_BPSP1 Probable portal protein
TSP_BPSP1 Tail sheath protein (TSP)

1 entry

Bacillus phage SP10 (Bacillus phage SP-10) reference strain

HMUDK_BPS10 5-hmdU DNA kinase (5-hydroxymethyluracil DNA kinase) (P-loop kinase) (gp186)

31 entries

Bacillus phage SP01 (Bacteriophage SP01)

Select_allDeselect_all
TF1_BPSP1 Transcription factor 1

pdb 1EXE; 1WTU

DPOL_BPSP1 DNA polymerase (EC 2.7.7.7) (EC 3.1.11.-)
RP28_BPSP1 RNA polymerase sigma GP28 factor
RP34_BPSP1 RNA polymerase sigma GP34 factor
GP27_BPSP1 Gene 27 protein
GP44_BPSP1 E3 protein (Gene 44 protein)

pdb 6L6V

GP30_BPSP1 Gene 30 protein (GP30)
GP37_BPSP1 Putative gene 37 protein
GP38_BPSP1 Putative gene 38 protein
GP39_BPSP1 Putative gene 39 protein
GP40_BPSP1 Gene 40 protein
GP41_BPSP1 Putative gene 41 protein
GP42_BPSP1 Putative gene 42 protein
GP45_BPSP1 Putative gene 45 protein
GP47_BPSP1 Putative gene 47 protein
GP48_BPSP1 Putative gene 48 protein
GP49_BPSP1 Putative gene 49 protein

pdb 8KH1

GP50_BPSP1 Putative gene 50 protein
GP51_BPSP1 Putative gene 51 protein
GP52_BPSP1 Putative gene 52 protein
GP53_BPSP1 Putative gene 53 protein
GP54_BPSP1 Putative gene 54 protein
GP55_BPSP1 Putative gene 55 protein
GP57_BPSP1 Putative gene 57 protein
GP58_BPSP1 Putative gene 58 protein
GP59_BPSP1 Putative gene 59 protein
GP60_BPSP1 Putative gene 60 protein

pdb 7XML

GP33_BPSP1 Gene 33 protein

pdb 8XA6; 8XA7

YG29_BPSP1 Uncharacterized 16.2 kDa protein in gene 29 5'region
HMUI_BPSP1 DNA endonuclease I-HmuI (EC 3.1.-.-) (HNH homing endonuclease I-HmuI)

pdb 1U3E

GP43_BPSP1 E22 protein (Gene 43 protein)