ISDA

Entry Detail

PDB ID:

4V96

Keywords:

VIRAL PROTEIN

Title:

The structure of a 1.8 MDa viral genome injection device suggests alternative infection mechanisms

Biological Source:

Source Organism:

Lactococcus phage TP901-1

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2012-02-01

Release Date:

2014-07-09

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.80 Å

R-Value Free:

0.26

R-Value Work:

0.23

R-Value Observed:

0.23

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:ORF48
Chain IDs:A (auth: AA), B (auth: AB), C (auth: AC), D (auth: AD), E (auth: AE), F (auth: AF), G (auth: AG), H (auth: AH), I (auth: AI), J (auth: AJ), K (auth: AK), L (auth: AL), M (auth: AM), N (auth: AN), O (auth: AO), P (auth: AP), Q (auth: AQ), R (auth: AR)
Chain Length:299
Number of Molecules:18
Biological Source:Lactococcus phage TP901-1

UniProt ID:Q9AZ56 Pfam ID:PF10651, PF18667

Protein Blast

Polymer Type:polypeptide(L)
Description:ORF46
Chain IDs:S (auth: AS), T (auth: AT), U (auth: AU), V (auth: AV), W (auth: AW), X (auth: AX)
Chain Length:253
Number of Molecules:6
Biological Source:Lactococcus phage TP901-1

UniProt ID:Q9AZ58

Protein Blast

Polymer Type:polypeptide(L)
Description:BPP
Chain IDs:Y (auth: BA), Z (auth: BB), AA (auth: BC), BA (auth: BD), CA (auth: BE), DA (auth: BF), EA (auth: BG), FA (auth: BH), GA (auth: BI), HA (auth: BJ), IA (auth: BK), JA (auth: BL), KA (auth: BM), LA (auth: BN), MA (auth: BO), NA (auth: BP), OA (auth: BQ), PA (auth: BR), QA (auth: BS), RA (auth: BT), SA (auth: BU), TA (auth: BV), UA (auth: BW), VA (auth: BX), WA (auth: BY), XA (auth: BZ), YA (auth: Ba), ZA (auth: Bb), AB (auth: Bc), BB (auth: Bd), CB (auth: Be), DB (auth: Bf), EB (auth: Bg), FB (auth: Bh), GB (auth: Bi), HB (auth: Bj), IB (auth: Bk), JB (auth: Bl), KB (auth: Bm), LB (auth: Bn), MB (auth: Bo), NB (auth: Bp), OB (auth: Bq), PB (auth: Br), QB (auth: Bs), RB (auth: Bt), SB (auth: Bu), TB (auth: Bv), UB (auth: Bw), VB (auth: Bx), WB (auth: By), XB (auth: Bz), YB (auth: B1), ZB (auth: B2)
Chain Length:173
Number of Molecules:54
Biological Source:Lactococcus phage TP901-1

UniProt ID:Q9G096 Pfam ID:PF18338, PF08931

Ligand Molecules

Primary Citation

Structure of the phage TP901-1 1.8 MDa baseplate suggests an alternative host adhesion mechanism.

Veesler, D, Spinelli, S, Mahony, J, Lichiere, J, Blangy, S, Bricogne, G, Legrand, P, Ortiz-Lombardia, M, Campanacci, V, van Sinderen, D, Cambillau, C.Show

Proc.Natl.Acad.Sci.USA 109 8954 8958 (2012)

PMID: 22611190 DOI: 10.1073/pnas.1200966109

Abstact

Phages of the Caudovirales order possess a tail that recognizes the host and ensures genome delivery upon infection. The X-ray structure of the approximately 1.8 MDa host adsorption device (baseplate) from the lactococcal phage TP901-1 shows that the receptor-binding proteins are pointing in the direction of the host, suggesting that this organelle is in a conformation ready for host adhesion. This result is in marked contrast with the lactococcal phage p2 situation, whose baseplate is known to undergo huge conformational changes in the presence of Ca(2+) to reach its active state. In vivo infection experiments confirmed these structural observations by demonstrating that Ca(2+) ions are required for host adhesion among p2-like phages (936-species) but have no influence on TP901-1-like phages (P335-species). These data suggest that these two families rely on diverse adhesion strategies which may lead to different signaling for genome release.

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Primary Citation of related structures