P2virus

VIRION

Non-enveloped, head-tail structure. The icosahedral head is about 60 nm, with a T=7 dextro symmetry , composed of 72 capsomers. The tail is contractile, about 135 × 18 nm, has 6 short kinked fibers.

GENOME

Linear, dsDNA genome of about 34 kb, encoding for approximately 45 proteins. The genome has cohesive ends (cos sites).

GENE EXPRESSION

Genes are transcribed by operons.

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. Synthesis of linear concatemers copies of viral DNA by rolling circle. 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

68 entries grouped by strain (browse by keywords)

39 entries

Escherichia phage P2 (Bacteriophage P2) reference strain

Select_allDeselect_all
RPC_BPP2 Repressor protein C
SCAF_BPP2 Capsid assembly scaffolding protein (Gene product O) (GpO) (Head morphogenesis protein) (Scaffold ...
PORTL_BPP2 Probable portal protein (GpQ)
ANTIH_BPP2 Putative antiholin (Protein lysA)
BPW_BPP2 Baseplate protein W (Gene W protein) (GpW)
BPX_BPP2 Baseplate protein X (Gene X protein) (GpX)
CAPSD_BPP2 Capsid proteins (GpN) [Cleaved into: Minor capsid protein H1; Minor capsid protein H2; Major capsid ...
BPD_BPP2 Probable baseplate hub protein (Gene D protein) (GpD)
BPI_BPP2 Baseplate protein I (Gene I protein) (GpI)
BPJ_BPP2 Baseplate protein J (Gene J protein) (GpJ)
ENLYS_BPP2 Endolysin (EC 4.2.2.n2) (Lysis protein) (Lysozyme) (Protein gpK) (Transglycosylase)
FIBH_BPP2 Probable tail fiber protein (GpH)
HOLIN_BPP2 Holin
VOGR_BPP2 Late control protein ogr
VOLD_BPP2 Overcoming lysogenization defect protein
VPB_BPP2 Replication gene B protein (GpB)
VPL_BPP2 Head completion/stabilization protein (GpL)
VPS_BPP2 Tail completion protein S (GpS)
SPAN2_BPP2 Probable spanin, outer lipoprotein subunit (Protein lysC)
TMP_BPP2 Probable tape measure protein (TMP) (Gene product T) (gpT)
TSP_BPP2 Tail sheath protein (TSP) (Major tail sheath protein) (Protein FI)
TFA_BPP2 Probable tail fiber assembly protein (GpG)
YO91_BPP2 Uncharacterized 12.9 kDa protein in GpA 3'region (ORF5)
VINT_BPP2 Integrase (EC 2.7.7.-) (EC 3.1.-.-)
VPA_BPP2 Replication gene A protein (EC 3.1.-.-) (GpA)
VPR_BPP2 Tail completion protein R (GpR)
VPM_BPP2 Terminase, endonuclease subunit (GpM)
VPP_BPP2 Terminase, ATPase subunit (GpP)
VCOX_BPP2 Regulatory protein cox
TAP_BPP2 Tail assembly protein E (Gene product E) (gpE) (Tail assembly chaperone) (TAC)
SPAN1_BPP2 Probable spanin, inner membrane subunit (i-spanin) (Protein lysB)
SPIKE_BPP2 Spike protein (Baseplate assembly protein gpV) (Gene V protein) (GpV)
TAPFS_BPP2 Tail assembly protein E' (Gene product E') (gpE') (Tail assembly chaperone) (TAC)
TUBE_BPP2 Tail tube protein (TTP) (Protein FII)
YO83_BPP2 Uncharacterized 10.2 kDa protein in GpA 5'region (ORF4)
YO81_BPP2 Uncharacterized 11.3 kDa protein in GpA 5'region (ORF2)
YO80_BPP2 Uncharacterized 8.3 kDa protein in GpA 5'region (ORF1)
YO82_BPP2 Uncharacterized 8.2 kDa protein in gpA 5'region (ORF3)
YSV_BPP2 Uncharacterized 30.4 kDa protein in S-V intergenic region (ORF-30)

16 entries

Escherichia phage 186 (Bacteriophage 186) reference strain

Select_allDeselect_all
RPC1_BP186 Repressor protein CI
RPC2_BP186 Regulatory protein CII
CP84_BP186 Uncharacterized 37.8 kDa protein in gpa 5'region
CP83_BP186 Uncharacterized 10.4 kDa protein in GpA 5'region
CP80_BP186 Uncharacterized 8.5 kDa protein in gpA 5'region
CP69_BP186 Uncharacterized 8.4 kDa protein
CP79_BP186 Uncharacterized 8.8 kDa protein in GpA 5'region
CP81_BP186 Uncharacterized exonuclease CP81 (EC 3.1.-.-)
BPD_BP186 Probable baseplate hub protein (Gene D protein) (GpD) (Late control gene D protein)
VPB_BP186 Late control gene B protein (GpB)
VAPL_BP186 Protein apl
VDHR_BP186 Protein dhr
VFIL_BP186 Protein fil
VPA_BP186 Replication gene A protein (EC 3.1.-.-) (GpA)
VINT_BP186 Integrase (EC 2.7.7.-) (EC 3.1.-.-)
TUM_BP186 SOS operon TUM protein (ORF95 protein) (Protein TUM95)

13 entries

Enterobacteria phage P4 (Bacteriophage P4) reference strain

Select_allDeselect_all
PRIM_BPP4 Putative P4-specific DNA primase (EC 2.7.7.-) (EC 3.6.4.12)
RCII_BPP4 Protein cII
GOP_BPP4 Protein gop
VPSU_BPP4 Polarity suppression protein (Amber mutation-suppressing protein)
VSID_BPP4 Glycoprotein 3 (Capsid size determination protein)
YQ55_BPP4 Uncharacterized protein ORF106
VASH_BPP4 Protein ash (Protein cI)
VBET_BPP4 Protein beta
VDEL_BPP4 Transactivation protein
VEPS_BPP4 Derepression protein
Y9K_BPP4 Uncharacterized protein ORF88 (Putative DNA-binding protein)
VINT_BPP4 Integrase (EC 2.7.7.-) (EC 3.1.-.-)
YQ54_BPP4 Uncharacterized protein ORF151