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 protein (browse by keywords)

1 entry

Putative antiholin (Protein lysA)

ANTIH_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

2 entries

Probable baseplate hub protein (Gene D protein) (GpD)

Select_allDeselect_all
BPD_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

Probable baseplate hub protein (Gene D protein) (GpD) (Late control gene D protein)

BPD_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Baseplate protein I (Gene I protein) (GpI)

BPI_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Baseplate protein J (Gene J protein) (GpJ)

BPJ_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Baseplate protein W (Gene W protein) (GpW)

BPW_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Baseplate protein X (Gene X protein) (GpX)

BPX_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Capsid proteins (GpN)

CAPSD_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Uncharacterized 8.4 kDa protein

CP69_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Uncharacterized 8.8 kDa protein in GpA 5'region

CP79_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Uncharacterized 8.5 kDa protein in gpA 5'region

CP80_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Uncharacterized exonuclease CP81 (EC 3.1.-.-)

CP81_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Uncharacterized 10.4 kDa protein in GpA 5'region

CP83_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Uncharacterized 37.8 kDa protein in gpa 5'region

CP84_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Endolysin (EC 4.2.2.n2) (Lysis protein) (Lysozyme) (Protein gpK) (Transglycosylase)

ENLYS_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Probable tail fiber protein (GpH)

FIBH_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Protein gop

GOP_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Holin

HOLIN_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Probable portal protein (GpQ)

PORTL_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Putative P4-specific DNA primase (EC 2.7.7.-) (EC 3.6.4.12)

PRIM_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Protein cII

RCII_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Repressor protein C

RPC_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Repressor protein CI

RPC1_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Regulatory protein CII

RPC2_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Capsid assembly scaffolding protein (Gene product O) (GpO) (Head morphogenesis protein) (Scaffold protein)

SCAF_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Probable spanin, inner membrane subunit (i-spanin) (Protein lysB)

SPAN1_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Probable spanin, outer lipoprotein subunit (Protein lysC)

SPAN2_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Spike protein (Baseplate assembly protein gpV) (Gene V protein) (GpV)

SPIKE_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Tail assembly protein E (Gene product E) (gpE) (Tail assembly chaperone) (TAC)

TAP_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Tail assembly protein E' (Gene product E') (gpE') (Tail assembly chaperone) (TAC)

TAPFS_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Probable tail fiber assembly protein (GpG)

TFA_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Probable tape measure protein (TMP) (Gene product T) (gpT)

TMP_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Tail sheath protein (TSP) (Major tail sheath protein) (Protein FI)

TSP_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Tail tube protein (TTP) (Protein FII)

TUBE_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

SOS operon TUM protein (ORF95 protein) (Protein TUM95)

TUM_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Protein apl

VAPL_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Protein ash (Protein cI)

VASH_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Protein beta

VBET_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Regulatory protein cox

VCOX_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Transactivation protein

VDEL_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Protein dhr

VDHR_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

1 entry

Derepression protein

VEPS_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Protein fil

VFIL_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain

3 entries

Integrase (EC 2.7.7.-) (EC 3.1.-.-)

Select_allDeselect_all
VINT_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain
VINT_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain
VINT_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Late control protein ogr

VOGR_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Overcoming lysogenization defect protein

VOLD_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

2 entries

Replication gene A protein (EC 3.1.-.-) (GpA)

Select_allDeselect_all
VPA_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain
VPA_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

2 entries

Late control gene B protein (GpB)

Select_allDeselect_all
VPB_BP186
Escherichia phage 186 (Bacteriophage 186) reference strain
VPB_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

Replication gene B protein (GpB)

1 entry

Head completion/stabilization protein (GpL)

VPL_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Terminase, endonuclease subunit (GpM)

VPM_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Terminase, ATPase subunit (GpP)

VPP_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Tail completion protein R (GpR)

VPR_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Tail completion protein S (GpS)

VPS_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Polarity suppression protein (Amber mutation-suppressing protein)

VPSU_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Glycoprotein 3 (Capsid size determination protein)

VSID_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Uncharacterized protein ORF88 (Putative DNA-binding protein)

Y9K_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Uncharacterized 8.3 kDa protein in GpA 5'region (ORF1)

YO80_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Uncharacterized 11.3 kDa protein in GpA 5'region (ORF2)

YO81_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Uncharacterized 8.2 kDa protein in gpA 5'region (ORF3)

YO82_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Uncharacterized 10.2 kDa protein in GpA 5'region (ORF4)

YO83_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Uncharacterized 12.9 kDa protein in GpA 3'region (ORF5)

YO91_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain

1 entry

Uncharacterized protein ORF151

YQ54_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Uncharacterized protein ORF106

YQ55_BPP4
Enterobacteria phage P4 (Bacteriophage P4) reference strain

1 entry

Uncharacterized 30.4 kDa protein in S-V intergenic region (ORF-30)

YSV_BPP2
Escherichia phage P2 (Bacteriophage P2) reference strain