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- PDB-2npd: An unusual twin-His arrangement in the pore of ammonia channels i... -
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Open data
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Basic information
Entry | Database: PDB / ID: 2npd | ||||||
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Title | An unusual twin-His arrangement in the pore of ammonia channels is essential for substrate conductance | ||||||
![]() | Ammonia channel | ||||||
![]() | TRANSPORT PROTEIN / Membrane protein / Ammonia transport / Histidine mutant / AmtB | ||||||
Function / homology | ![]() ammonium transmembrane transport / ammonium channel activity / carbon dioxide transport / identical protein binding / plasma membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Lupo, D. / Winkler, F.K. | ||||||
![]() | ![]() Title: An unusual twin-his arrangement in the pore of ammonia channels is essential for substrate conductance Authors: Javelle, A. / Lupo, D. / Zheng, L. / Li, X.-D. / Winkler, F.K. / Merrick, M. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 80.5 KB | Display | ![]() |
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PDB format | ![]() | 59.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 425.4 KB | Display | ![]() |
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Full document | ![]() | 427.3 KB | Display | |
Data in XML | ![]() | 8.9 KB | Display | |
Data in CIF | ![]() | 13 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 2nmrC ![]() 2nopC ![]() 2nowC ![]() 2npcC ![]() 2npeC ![]() 2npgC ![]() 2npjC ![]() 2npkC ![]() 1xqfS 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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1 | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 44460.742 Da / Num. of mol.: 1 / Mutation: H168F Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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#2: Chemical | ChemComp-ACT / |
#3: Chemical | ChemComp-IMD / |
#4: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 3.3 Å3/Da / Density % sol: 62.77 % |
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Crystal grow | Temperature: 298 K / Method: vapor diffusion, sitting drop / pH: 4.6 Details: 30% PEG 550, 0.1M SODIUM ACETATE, 0.2M AMMONIUM SULFATE, PH 4.6, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K, pH 4.60 |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MARMOSAIC 225 mm CCD / Detector: CCD / Date: Nov 25, 2005 |
Radiation | Monochromator: SI 111 CHANNEL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.98017 Å / Relative weight: 1 |
Reflection | Resolution: 2.1→50 Å / Num. obs: 33268 / % possible obs: 99.2 % / Observed criterion σ(F): 0 / Observed criterion σ(I): -3 / Rsym value: 0.069 / Net I/σ(I): 14.86 |
Reflection shell | Resolution: 2.1→2.2 Å / Mean I/σ(I) obs: 3.55 / Rsym value: 0.564 / % possible all: 99.7 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1XQF Resolution: 2.1→15 Å / Cor.coef. Fo:Fc: 0.97 / Cor.coef. Fo:Fc free: 0.955 / SU B: 9.351 / SU ML: 0.11 / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / ESU R: 0.134 / ESU R Free: 0.124 / 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 Å / Solvent model: MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 46.932 Å2
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Refinement step | Cycle: LAST / Resolution: 2.1→15 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.1→2.154 Å / Total num. of bins used: 20
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