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- PDB-1ns6: The 2.1A Structure of Horse (alpha hemichrome/beta met) Hemoglobi... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1ns6 | ||||||
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Title | The 2.1A Structure of Horse (alpha hemichrome/beta met) Hemoglobin at pH 5.4 | ||||||
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![]() | OXYGEN STORAGE/TRANSPORT / hemichrome / bisimidazole alpha heme / aquomet beta heme / globin fold / OXYGEN STORAGE-TRANSPORT COMPLEX | ||||||
Function / homology | ![]() hemoglobin alpha binding / haptoglobin binding / haptoglobin-hemoglobin complex / organic acid binding / hemoglobin complex / hydrogen peroxide catabolic process / oxygen carrier activity / oxygen binding / peroxidase activity / blood microparticle ...hemoglobin alpha binding / haptoglobin binding / haptoglobin-hemoglobin complex / organic acid binding / hemoglobin complex / hydrogen peroxide catabolic process / oxygen carrier activity / oxygen binding / peroxidase activity / blood microparticle / iron ion binding / heme binding / metal ion binding Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() | ||||||
![]() | Robinson, V.L. / Smith, B.B. / Arnone, A. | ||||||
![]() | ![]() Title: A pH-Dependent Aquomet-to-Hemichrome Transition in Crystalline Horse Methemoglobin Authors: Robinson, V.L. / Smith, B.B. / Arnone, A. #1: ![]() Title: An X-Ray Study of Horse Methaemoglobin. I Authors: Boyes-Watson, J. / Davidson, E. / Perutz, M.F. #2: ![]() Title: The Structure of Haemoglobin. III. Direct Determination of the Molecular Transform Authors: Perutz, M.F. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 71.5 KB | Display | ![]() |
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PDB format | ![]() | 52.6 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 13.9 KB | Display | |
Data in CIF | ![]() | 18.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1ns9C ![]() 1g0bS C: citing same article ( S: Starting model for refinement |
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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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Details | The biological assembly (tetramer) is generated from the dimer in the asymetric unit by the operation: -x, y, -z. |
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Components
#1: Protein | Mass: 15138.280 Da / Num. of mol.: 1 / Fragment: alpha subunit / Source method: isolated from a natural source / Details: pH 5.4 Hemichrome Structure / Source: (natural) ![]() ![]() | ||
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#2: Protein | Mass: 16032.274 Da / Num. of mol.: 1 / Fragment: beta subunit / Source method: isolated from a natural source / Details: pH 5.4 Hemichrome Structure / Source: (natural) ![]() ![]() | ||
#3: Chemical | #4: Water | ChemComp-HOH / | |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.76 Å3/Da / Density % sol: 55.1 % | ||||||||||||||||||||||||
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Crystal grow | Temperature: 298 K / Method: vapor diffusion / pH: 5.4 Details: 1.5M ammonium sulfate, 0.35M ammonium phosphate then soaked to pH 5.4 in solutions of 3.35 M ammonium sulfate buffered with 0.2M ammonium phosphate, VAPOR DIFFUSION, temperature 298K | ||||||||||||||||||||||||
Crystal grow | *PLUS pH: 7.1 / Method: batch method | ||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 298 K |
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Diffraction source | Source: ![]() |
Detector | Type: UCSD MARK II / Detector: AREA DETECTOR / Date: Sep 15, 1997 |
Radiation | Monochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 2.04→30 Å / Num. obs: 21884 / % possible obs: 97.2 % / Observed criterion σ(I): 2 / Rmerge(I) obs: 0.053 |
Reflection | *PLUS Highest resolution: 2.07 Å / Num. obs: 21680 / Num. measured all: 125115 |
Reflection shell | *PLUS Highest resolution: 2.07 Å / Lowest resolution: 2.23 Å / % possible obs: 87.7 % / Rmerge(I) obs: 0.123 / Mean I/σ(I) obs: 4.5 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB entry 1G0B Resolution: 2.05→54.23 Å / Cor.coef. Fo:Fc: 0.953 / SU B: 4.946 / SU ML: 0.136 / σ(F): 2 / ESU R: 0.149 / 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: 1.4 Å / Solvent model: BABINET MODEL WITH MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 18.383 Å2
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Refinement step | Cycle: LAST / Resolution: 2.05→54.23 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.05→2.103 Å / Num. reflection Rfree: 0 / Num. reflection Rwork: 838 / Total num. of bins used: 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Software | *PLUS Version: 5 / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | *PLUS Highest resolution: 2.07 Å / Rfactor Rfree: 0.194 / Rfactor Rwork: 0.162 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints | *PLUS
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LS refinement shell | *PLUS Highest resolution: 2.07 Å / Lowest resolution: 2.23 Å |