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Yorodumi- PDB-3ejc: Full length Receptor Binding Protein from Lactococcal phage TP901-1 -
+Open data
-Basic information
Entry | Database: PDB / ID: 3ejc | ||||||
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Title | Full length Receptor Binding Protein from Lactococcal phage TP901-1 | ||||||
Components | Baseplate protein (BPP) | ||||||
Keywords | VIRAL PROTEIN / SUGAR BINDING PROTEIN / Lactococcus lactis / siphoviridae / receptor binding protein / phage TP901-1 / P335 species | ||||||
Function / homology | Function and homology information | ||||||
Biological species | Lactococcus phage TP901-1 (virus) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.85 Å | ||||||
Authors | Spinelli, S. / Lichiere, J. / Blangy, S. / Sciara, G. / Cambillau, C. / Campanacci, V. | ||||||
Citation | Journal: J Biol Chem / Year: 2010 Title: Structure and molecular assignment of lactococcal phage TP901-1 baseplate. Authors: Cecilia Bebeacua / Patrick Bron / Livia Lai / Christina Skovgaard Vegge / Lone Brøndsted / Silvia Spinelli / Valérie Campanacci / David Veesler / Marin van Heel / Christian Cambillau / Abstract: P335 lactococcal phages infect the gram(+) bacterium Lactococcus lactis using a large multiprotein complex located at the distal part of the tail and termed baseplate (BP). The BP harbors the ...P335 lactococcal phages infect the gram(+) bacterium Lactococcus lactis using a large multiprotein complex located at the distal part of the tail and termed baseplate (BP). The BP harbors the receptor-binding proteins (RBPs), which allow the specific recognition of saccharidic receptors localized on the host cell surface. We report here the electron microscopic structure of the phage TP901-1 wild-type BP as well as those of two mutants bppL (-) and bppU(-), lacking BppL (the RBPs) or both peripheral BP components (BppL and BppU), respectively. We also achieved an electron microscopic reconstruction of a partial BP complex, formed by BppU and BppL. This complex exhibits a tripod shape and is composed of nine BppLs and three BppUs. These structures, combined with light-scattering measurements, led us to propose that the TP901-1 BP harbors six tripods at its periphery, located around the central tube formed by ORF46 (Dit) hexamers, at its proximal end, and a ORF47 (Tal) trimer at its distal extremity. A total of 54 BppLs (18 RBPs) are thus available to mediate host anchoring with a large apparent avidity. TP901-1 BP exhibits an infection-ready conformation and differs strikingly from the lactococcal phage p2 BP, bearing only 6 RBPs, and which needs a conformational change to reach its activated state. The comparison of several Siphoviridae structures uncovers a close organization of their central BP core whereas striking differences occur at the periphery, leading to diverse mechanisms of host recognition. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 3ejc.cif.gz | 46 KB | Display | PDBx/mmCIF format |
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PDB format | pdb3ejc.ent.gz | 31.8 KB | Display | PDB format |
PDBx/mmJSON format | 3ejc.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 3ejc_validation.pdf.gz | 410.8 KB | Display | wwPDB validaton report |
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Full document | 3ejc_full_validation.pdf.gz | 413.3 KB | Display | |
Data in XML | 3ejc_validation.xml.gz | 9.6 KB | Display | |
Data in CIF | 3ejc_validation.cif.gz | 13.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ej/3ejc ftp://data.pdbj.org/pub/pdb/validation_reports/ej/3ejc | HTTPS FTP |
-Related structure data
Related structure data | 1792C 1793C 1794C 1795C 2f0cS S: Starting model for refinement C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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Unit cell |
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Components on special symmetry positions |
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-Components
#1: Protein | Mass: 17994.123 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Lactococcus phage TP901-1 (virus) / Gene: bpp / Plasmid: PDEST14 / Production host: Escherichia coli (E. coli) / Strain (production host): Rosetta (DE3) PLysS / References: UniProt: Q9G096 |
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#2: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 2.16 Å3/Da / Density % sol: 43.17 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, sitting drop / pH: 6.5 Details: 300 nL of protein at 5 mg/mL were mixed with 100 nL of 20% PEG 8000, 0.2 M Mg Acetate tetrahydrate, 0.1 M Na Cacodylate pH 6.5 using a Cartesian Pixsys Robot, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: SYNCHROTRON / Site: ESRF / Beamline: ID14-2 / Wavelength: 0.933 Å |
Detector | Type: ADSC QUANTUM 4 / Detector: CCD / Date: Feb 28, 2008 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.933 Å / Relative weight: 1 |
Reflection | Resolution: 1.85→30 Å / Num. all: 14330 / Num. obs: 14190 / % possible obs: 99.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.5 % / Biso Wilson estimate: 15.8 Å2 / Rmerge(I) obs: 0.103 / Net I/σ(I): 5.6 |
Reflection shell | Resolution: 1.85→1.95 Å / Redundancy: 5.8 % / Rmerge(I) obs: 0.41 / Mean I/σ(I) obs: 1.7 / Num. unique all: 2025 / % possible all: 99.9 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: 2f0c Resolution: 1.85→28.54 Å / Cor.coef. Fo:Fc: 0.943 / Cor.coef. Fo:Fc free: 0.909 / SU B: 5.914 / SU ML: 0.098 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / ESU R: 0.157 / ESU R Free: 0.148 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 3.853 Å2
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Refine analyze | Luzzati coordinate error free: 0.148 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.85→28.54 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 1.85→1.898 Å / Total num. of bins used: 20
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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