Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Hetero 12-mer - A9B3 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Hetero 12-mer - A9B3 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 382.56 kDa 
• Atom Count: 30080 
• Modelled Residue Count: 3564 
• Deposited Residue Count: 3582 
• Unique protein chains: 2

3U6X

Phage TP901-1 baseplate tripod

• PDB DOI: 10.2210/pdb3U6X/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Lactococcus phage TP901-1
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2011-10-13 Released: 2012-07-04 
• Deposition Author(s): Veesler, D., Spinelli, S., Mahony, J., Lichiere, J., Blangy, S., Bricogne, G., Legrand, P., Ortiz-Lombardia, M., Campanacci, V.I., van Sinderen, D., Cambillau, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.206 
• R-Value Work: 0.178 
• R-Value Observed: 0.181 

Literature

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.

(2012) Proc Natl Acad Sci U S A 109: 8954-8958

• PubMed: 22611190 
• DOI: 10.1073/pnas.1200966109
• Primary Citation of Related Structures:  
  3U6X, 3UH8, 4V96


• PubMed Abstract: 
  

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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Organizational Affiliation: 

Architecture et Fonction des Macromolécules Biologiques, Aix-Marseille Université, Campus de Luminy, Case 932, 13288 Marseille Cedex 09, France. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BPP	A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R	164	Lactococcus phage TP901-1	Mutation(s): 0  Gene Names: bpp, ORF49
UniProt
Find proteins for Q9G096 (Lactococcus phage TP901-1) Explore Q9G096  Go to UniProtKB:  Q9G096

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF48	S, T, U, V [auth X], W [auth Y], X [auth Z]	105	Lactococcus phage TP901-1	Mutation(s): 0  Gene Names: ORF48
UniProt
Find proteins for Q9AZ56 (Lactococcus phage TP901-1) Explore Q9AZ56  Go to UniProtKB:  Q9AZ56

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BR	AA [auth E], BA [auth G], CA [auth H], DA [auth H], EA [auth I], FA [auth K], GA [auth N], HA [auth O], IA [auth P], JA [auth Q], KA [auth S], LA [auth T], MA [auth U], NA [auth X], OA [auth Y], PA [auth Z], Y [auth D], Z [auth E]	BROMIDE ION Br CPELXLSAUQHCOX-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.206 
• R-Value Work: 0.178 
• R-Value Observed: 0.181 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 149.96	α = 90
b = 237.42	β = 115.67
c = 152.21	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
MOLREP	phasing
BUSTER	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-10-13 
• Released Date: 2012-07-04 
Deposition Author(s): Veesler, D., Spinelli, S., Mahony, J., Lichiere, J., Blangy, S., Bricogne, G., Legrand, P., Ortiz-Lombardia, M., Campanacci, V.I., van Sinderen, D., Cambillau, C.

Revision History  

• Version 1.0: 2012-07-04
  Type: Initial release
  
• Version 1.1: 2012-07-11
  Changes: Database references