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Yorodumi- PDB-2awn: Crystal structure of the ADP-Mg-bound E. Coli MALK (Crystallized ... -
+Open data
-Basic information
Entry | Database: PDB / ID: 2awn | ||||||
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Title | Crystal structure of the ADP-Mg-bound E. Coli MALK (Crystallized with ATP-Mg) | ||||||
Components | Maltose/maltodextrin import ATP-binding protein malK | ||||||
Keywords | TRANSPORT PROTEIN / ATP-BINDING CASSETTE | ||||||
Function / homology | Function and homology information ABC-type maltose transporter / ABC-type maltose transporter activity / negative regulation of maltose transport / enzyme IIA-maltose transporter complex / negative regulation of transmembrane transport / maltose transport complex / maltose transport / maltodextrin transmembrane transport / ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing / ATP-binding cassette (ABC) transporter complex ...ABC-type maltose transporter / ABC-type maltose transporter activity / negative regulation of maltose transport / enzyme IIA-maltose transporter complex / negative regulation of transmembrane transport / maltose transport complex / maltose transport / maltodextrin transmembrane transport / ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing / ATP-binding cassette (ABC) transporter complex / DNA-binding transcription factor binding / ATP hydrolysis activity / ATP binding / membrane Similarity search - Function | ||||||
Biological species | Escherichia coli (E. coli) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.3 Å | ||||||
Authors | Lu, G. / Westbrooks, J.M. / Davidson, A.L. / Chen, J. | ||||||
Citation | Journal: Proc.Natl.Acad.Sci.Usa / Year: 2005 Title: ATP hydrolysis is required to reset the ATP-binding cassette dimer into the resting-state conformation. Authors: Lu, G. / Westbrooks, J.M. / Davidson, A.L. / Chen, J. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 2awn.cif.gz | 277.1 KB | Display | PDBx/mmCIF format |
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PDB format | pdb2awn.ent.gz | 220.8 KB | Display | PDB format |
PDBx/mmJSON format | 2awn.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/aw/2awn ftp://data.pdbj.org/pub/pdb/validation_reports/aw/2awn | HTTPS FTP |
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-Related structure data
Related structure data | 2awoC 1q1bS 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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2 |
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Unit cell |
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-Components
#1: Protein | Mass: 42184.535 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Escherichia coli (E. coli) / Strain: K12 / Gene: malK / Plasmid: PKPS2E-86 / Production host: Escherichia coli (E. coli) / Strain (production host): HN741 / References: UniProt: P68187, EC: 3.6.3.19 #2: Chemical | ChemComp-MG / #3: Chemical | ChemComp-ADP / #4: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 2.8 Å3/Da / Density % sol: 56 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, hanging drop Details: 5mM ATP-Mg2+, 0.2M Magnesium Formate, 15%~20% PEG3350, 15% Glycerol , VAPOR DIFFUSION, HANGING DROP, temperature 293K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: SYNCHROTRON / Site: APS / Beamline: 19-BM |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Relative weight: 1 |
Reflection | Resolution: 2.3→50 Å / Num. obs: 83396 / Biso Wilson estimate: 32.1 Å2 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: 1Q1B Resolution: 2.3→37.28 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 200321.46 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 2
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 48.6267 Å2 / ksol: 0.327056 e/Å3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 67.8 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.3→37.28 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.3→2.44 Å / Rfactor Rfree error: 0.017 / Total num. of bins used: 6
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Xplor file |
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