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Yorodumi- PDB-1nqg: OUTER MEMBRANE COBALAMIN TRANSPORTER (BTUB) FROM E. COLI, WITH BO... -
+Open data
-Basic information
Entry | Database: PDB / ID: 1nqg | ||||||
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Title | OUTER MEMBRANE COBALAMIN TRANSPORTER (BTUB) FROM E. COLI, WITH BOUND CALCIUM | ||||||
Components | vitamin b12 receptor | ||||||
Keywords | TRANSPORT PROTEIN / Beta barrel / cobalamin / VITAMIN B12 / membrane transport / calcium binding | ||||||
Function / homology | Function and homology information ABC-type vitamin B12 transporter activity / cobalamin transport / transmembrane transporter complex / porin activity / pore complex / monoatomic ion transmembrane transport / cell outer membrane / protein domain specific binding / calcium ion binding / membrane Similarity search - Function | ||||||
Biological species | Escherichia coli (E. coli) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 3.31 Å | ||||||
Authors | Chimento, D.P. / Mohanty, A.K. / Kadner, R.J. / Wiener, M.C. | ||||||
Citation | Journal: Nat.Struct.Biol. / Year: 2003 Title: Substrate-induced transmembrane signaling in the cobalamin transporter BtuB Authors: CHIMENTO, D.P. / MOHANTY, A.K. / KADNER, R.J. / WIENER, M.C. #1: Journal: Acta Crystallogr.,Sect.D / Year: 2003 Title: Crystallization and initial X-ray diffraction of BtuB, the integral membrane cobalamin transporter of Escherichia coli Authors: CHIMENTO, D.P. / MOHANTY, A.K. / KADNER, R.J. / WIENER, M.C. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 1nqg.cif.gz | 132 KB | Display | PDBx/mmCIF format |
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PDB format | pdb1nqg.ent.gz | 102.8 KB | Display | PDB format |
PDBx/mmJSON format | 1nqg.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/nq/1nqg ftp://data.pdbj.org/pub/pdb/validation_reports/nq/1nqg | HTTPS FTP |
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-Related structure data
Related structure data | 1nqeC 1nqfSC 1nqhC C: citing same article (ref.) S: Starting model for refinement |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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Unit cell |
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-Components
#1: Protein | Mass: 66386.180 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Escherichia coli (E. coli) / Gene: btuB / Plasmid: pET22b / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3)pLysS / References: UniProt: P06129 | ||
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#2: Chemical | ChemComp-CA / #3: Chemical | ChemComp-C8E / ( |
-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 3.27 Å3/Da / Density % sol: 62.37 % | ||||||||||||||||||||||||||||||||||||||||||
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, sitting drop / pH: 6.6 Details: PEG 3350, MAGNESIUM ACETATE, BIS-TRIS, N-OCTYL TETRAOXYETHYLENE, pH 6.6, VAPOR DIFFUSION, SITTING DROP, temperature 293K | ||||||||||||||||||||||||||||||||||||||||||
Crystal grow | *PLUS Details: Chimento, D.P., (2003) Acta Crystallogr., Sect.D, 59, 509. | ||||||||||||||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: SYNCHROTRON / Site: APS / Beamline: 17-ID / Wavelength: 1.255 Å |
Detector | Type: MARRESEARCH / Detector: CCD / Date: Aug 2, 2002 |
Radiation | Monochromator: Si(111) double-crystal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.255 Å / Relative weight: 1 |
Reflection | Resolution: 3.3→35 Å / Num. all: 13745 / Num. obs: 13146 / % possible obs: 95.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): -3 / Redundancy: 9.7 % / Rsym value: 0.079 / Net I/σ(I): 30.4 |
Reflection shell | Resolution: 3.3→3.33 Å / Redundancy: 9.4 % / Mean I/σ(I) obs: 8.6 / Num. unique all: 316 / Rsym value: 0.22 / % possible all: 95.8 |
Reflection | *PLUS Lowest resolution: 20 Å / Rmerge(I) obs: 0.079 |
Reflection shell | *PLUS Highest resolution: 3.3 Å / % possible obs: 95.8 % / Rmerge(I) obs: 0.22 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: PDB ENTRY 1NQF Resolution: 3.31→20 Å / Cor.coef. Fo:Fc: 0.887 / Cor.coef. Fo:Fc free: 0.874 / SU B: 30.727 / SU ML: 0.539 / TLS residual ADP flag: LIKELY RESIDUAL / Isotropic thermal model: TLS / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R Free: 0.546 / Stereochemistry target values: Engh & Huber Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. THE AVERAGE ISOTROPIC B VALUE IS AN AVERAGE RESIDUAL B FACTOR.
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 31.768 Å2
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Refine analyze | Luzzati sigma a free: 0.539 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 3.31→20 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 3.31→3.389 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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Software | *PLUS Version: 5.1.24 / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | *PLUS Highest resolution: 3.3 Å / Lowest resolution: 20 Å / % reflection Rfree: 5 % | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints | *PLUS
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