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- PDB-1b44: CRYSTAL STRUCTURE OF THE B SUBUNIT OF HEAT-LABILE ENTEROTOXIN FRO... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1b44 | ||||||
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Title | CRYSTAL STRUCTURE OF THE B SUBUNIT OF HEAT-LABILE ENTEROTOXIN FROM E. COLI CARRYING A PEPTIDE WITH ANTI-HSV ACTIVITY | ||||||
![]() | PROTEIN (B-POL SUBUNIT OF HEAT-LABILE ENTEROTOXIN) | ||||||
![]() | TOXIN / B SUBUNIT / HEAT-LABILE ENTEROTOXIN ANTI-HSV | ||||||
Function / homology | ![]() | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() | ||||||
![]() | Matkovic-Calogovic, D. / Loregian, A. / D'Acunto, M.R. / Battistutta, R. / Tossi, A. / Palu, G. / Zanotti, G. | ||||||
![]() | ![]() Title: Crystal structure of the B subunit of Escherichia coli heat-labile enterotoxin carrying peptides with anti-herpes simplex virus type 1 activity. Authors: Matkovic-Calogovic, D. / Loregian, A. / D'Acunto, M.R. / Battistutta, R. / Tossi, A. / Palu, G. / Zanotti, G. #1: ![]() Title: Specific Inhibition of Herpes Virus Replication by Receptor-Mediated Entry of an Antiviral Peptide Linked to Escherichia Coli Enterotoxin B Subunit Authors: Marcello, A. / Loreggian, A. / Cross, A. / Marsden, H. / Hirst, T.R. / Palu, G. #2: ![]() Title: Refined Structure of Escherichia Coli Heat-Labile Enterotoxin, a Close Relative of Cholera Toxin Authors: Sixma, T.K. / Kalk, K.H. / Van Zanten, B.A.M. / Dauter, Z. / Kingma, J. / Witholt, B. / Hol, W.G.J. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 114 KB | Display | ![]() |
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PDB format | ![]() | 89.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 391.7 KB | Display | ![]() |
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Full document | ![]() | 400.1 KB | Display | |
Data in XML | ![]() | 11.2 KB | Display | |
Data in CIF | ![]() | 17.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1ltrSC S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS oper:
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Components
#1: Protein | Mass: 14293.311 Da / Num. of mol.: 5 / Fragment: SUBUNIT B Source method: isolated from a genetically manipulated source Details: THE B SUBUNIT HAS A PEPTIDE WITH ANTI-HSV ACTIVITY AS AN EXTENSION. Source: (gene. exp.) ![]() ![]() Description: THE PROTEIN WAS CLONED AND EXPRESSED IN VIBRIO CHOLERA Plasmid: PAM320 / Production host: ![]() ![]() |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 5.54 Å3/Da / Density % sol: 78 % | ||||||||||||||||||||||||||||||
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Crystal grow | pH: 6 / Details: pH 6 | ||||||||||||||||||||||||||||||
Crystal | *PLUS Density % sol: 74 % | ||||||||||||||||||||||||||||||
Crystal grow | *PLUS Temperature: 4 ℃ / Method: vapor diffusion, hanging drop | ||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MARRESEARCH / Detector: IMAGE PLATE / Date: Jul 15, 1998 / Details: MIRRORS |
Radiation | Monochromator: SI (111) DOUBLE CRYSTAL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1 Å / Relative weight: 1 |
Reflection | Resolution: 3.3→34.6 Å / Num. obs: 16377 / % possible obs: 74.2 % / Observed criterion σ(I): 3 / Redundancy: 3.9 % / Rmerge(I) obs: 0.14 / Rsym value: 0.14 / Net I/σ(I): 6.9 |
Reflection shell | Resolution: 3.3→3.69 Å / Redundancy: 3.9 % / Rmerge(I) obs: 0.48 / Mean I/σ(I) obs: 1.6 / Rsym value: 0.48 / % possible all: 76.7 |
Reflection | *PLUS Num. measured all: 64075 |
Reflection shell | *PLUS Highest resolution: 3.3 Å / % possible obs: 76.7 % / Num. unique obs: 4728 |
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Processing
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Refinement | Method to determine structure: OTHER Starting model: PDB ENTRY 1LTR, CHAINS D-H Resolution: 3.3→10 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 1000000 / Data cutoff low absF: 0.001 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 3
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Refine analyze | Luzzati d res low obs: 10 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 3.3→10 Å
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Refine LS restraints |
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Refine LS restraints NCS | Refine-ID: X-RAY DIFFRACTION / Rms dev Biso : _ / Rms dev position: _ / Weight Biso : _ / Weight position: _
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LS refinement shell | Resolution: 3.3→3.44 Å / Rfactor Rfree error: 0.02 / Total num. of bins used: 8
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Xplor file |
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Software | *PLUS Name: ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | *PLUS Highest resolution: 3.3 Å / σ(F): 3 / % reflection Rfree: 5 % | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints | *PLUS
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LS refinement shell | *PLUS Rfactor Rfree: 0.32 / % reflection Rfree: 5 % / Rfactor Rwork: 0.29 |