Non-enveloped, head-tail structure. The capsid is about 108 nm in diameter and has a T=16 symmetry . The tails is contractile, about 140 nm in length, with brushy tail fibers.


Linear, dsDNA genome of about 145 kb, encoding for approximately 200 proteins.


Genes are transcribed by operons.



  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 genomic 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.

Matching UniProtKB/Swiss-Prot entries

36 entries grouped by strain (browse by keywords)

36 entries

Bacillus phage SP01 (Bacteriophage SP01) reference strain

TSP_BPSP1 Tail sheath protein (TSP)
PORTL_BPSP1 Probable portal protein
GP56_BPSP1 Putative gene 56 protein
HMUI_BPSP1 DNA endonuclease I-HmuI (EC 3.1.-.-) (HNH homing endonuclease I-HmuI)
GP60_BPSP1 Putative gene 60 protein
GP40_BPSP1 Gene 40 protein
GP37_BPSP1 Putative gene 37 protein
RP34_BPSP1 RNA polymerase sigma GP34 factor
RP28_BPSP1 RNA polymerase sigma GP28 factor
GP55_BPSP1 Putative gene 55 protein
GP43_BPSP1 E22 protein (Gene 43 protein)
GP54_BPSP1 Putative gene 54 protein
GP27_BPSP1 Gene 27 protein
GP49_BPSP1 Putative gene 49 protein
GP41_BPSP1 Putative gene 41 protein
GP57_BPSP1 Putative gene 57 protein
GP46_BPSP1 Putative gene 46 protein
GP30_BPSP1 Gene 30 protein (GP30)
GP58_BPSP1 Putative gene 58 protein
GP59_BPSP1 Putative gene 59 protein
GP44_BPSP1 E3 protein (Gene 44 protein)
GP52_BPSP1 Putative gene 52 protein
GP45_BPSP1 Putative gene 45 protein
GP47_BPSP1 Putative gene 47 protein
GP51_BPSP1 Putative gene 51 protein
GP33_BPSP1 Gene 33 protein
GP48_BPSP1 Putative gene 48 protein
GP50_BPSP1 Putative gene 50 protein
GP53_BPSP1 Putative gene 53 protein
GP42_BPSP1 Putative gene 42 protein
DUHM_BPSP1 Deoxyuridylate hydroxymethyltransferase (Deoxyuridylate hydroxymethylase) (EC 2.1.2.-) (dUMP ...
DPOL_BPSP1 DNA polymerase (EC (EC 3.1.11.-)
TF1_BPSP1 Transcription factor 1
YG29_BPSP1 Uncharacterized 16.2 kDa protein in gene 29 5'region
GP38_BPSP1 Putative gene 38 protein
GP39_BPSP1 Putative gene 39 protein