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- PDB-1g9f: CRYSTAL STRUCTURE OF THE SOYBEAN AGGLUTININ IN A COMPLEX WITH A B... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1g9f | |||||||||
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Title | CRYSTAL STRUCTURE OF THE SOYBEAN AGGLUTININ IN A COMPLEX WITH A BIANTENNARY BLOOD GROUP ANTIGEN ANALOG | |||||||||
![]() | LECTIN | |||||||||
![]() | SUGAR BINDING PROTEIN / JELLY-ROLL FOLD / LEGUME LECTIN | |||||||||
Function / homology | ![]() | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ![]() ![]() | |||||||||
![]() | Buts, L. / Hamelryck, T.W. / Dao-Thi, M.-H. / Loris, R. / Wyns, L. / Etzler, M.E. | |||||||||
![]() | ![]() Title: Weak protein-protein interactions in lectins: the crystal structure of a vegetative lectin from the legume Dolichos biflorus. Authors: Buts, L. / Dao-Thi, M.H. / Loris, R. / Wyns, L. / Etzler, M. / Hamelryck, T. #1: ![]() Title: X-ray crystallographic studies of unique cross-linked lattices between four isomeric biantennary oligosaccharides and soybean agglutinin Authors: Olsen, L.R. / Dessen, A. / Gupta, D. / Sabesan, S. / Sacchettini, J.C. / Brewer, C.F. #2: ![]() Title: X-ray crystal structure of the soybean agglutinin cross-linked with a biantennary analog of the blood group I carbohydrate antigen Authors: Dessen, A. / Gupta, D. / Sabesan, S. / Brewer, C.F. / Sacchettini, J.C. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 62.8 KB | Display | ![]() |
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PDB format | ![]() | 44.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related 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 is a tetramer generated from the monomer in the asymmetric unit by the operations: - monomer B: symmetry -X,-Y,Z translation (245.28,0,0) - monomer C: symmetry -Y,-X,-Z translation (122.64,122.64,90,56) - monomer D: symmetry Y,X,-Z translation (122.64,122.64,90.56) |
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Components
-Protein , 1 types, 1 molecules A
#1: Protein | Mass: 27595.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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-Sugars , 2 types, 2 molecules
#2: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source |
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#3: Polysaccharide | beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-[beta-D-galactopyranose- ...beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-[beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)]beta-D-galactopyranose Source method: isolated from a genetically manipulated source |
-Non-polymers , 3 types, 11 molecules ![](data/chem/img/MN.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/HOH.gif)
#4: Chemical | ChemComp-MN / |
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#5: Chemical | ChemComp-CA / |
#6: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 3.08 Å3/Da / Density % sol: 60.1 % | ||||||||||||||||||||||||||||||
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, hanging drop / pH: 7.2 Details: protein,carbohydrate,HEPES,CaCl(2),MnCl(2),NaCl, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 293K | ||||||||||||||||||||||||||||||
Crystal grow | *PLUS pH: 5.6 | ||||||||||||||||||||||||||||||
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: SIEMENS / Detector: AREA DETECTOR / Date: Jan 1, 1997 / Details: COLLIMATOR |
Radiation | Monochromator: Ni filter / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 2.2→20 Å / Num. all: 72368 / Num. obs: 57894 / % possible obs: 80 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 5 / Redundancy: 2.9 % / Biso Wilson estimate: 21.7 Å2 / Rmerge(I) obs: 0.128 / Net I/σ(I): 12 |
Reflection shell | Resolution: 2.2→2.25 Å / Mean I/σ(I) obs: 3.7 |
Reflection | *PLUS Num. all: 57894 / Num. obs: 19716 / % possible obs: 80 % / Num. measured all: 72368 |
Reflection shell | *PLUS % possible obs: 72.7 % |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: soybean agglutinin Resolution: 2.5→20 Å / Rfactor Rfree error: 0.007 / Data cutoff high absF: 1969940.24 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 43.72 Å2 / ksol: 0.302 e/Å3 | ||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 23.8 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.5→20 Å
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Refine LS restraints |
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Refine LS restraints NCS | NCS model details: CONSTR | ||||||||||||||||||||||||||||||||||||||||
LS refinement shell | Resolution: 2.5→2.66 Å / Rfactor Rfree error: 0.026 / Total num. of bins used: 6
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Software | *PLUS Name: CNS / Version: 1 / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||
Refinement | *PLUS σ(F): 0 / % reflection Rfree: 10.3 % / Rfactor obs: 0.19 / Rfactor Rfree: 0.23 / Rfactor Rwork: 0.19 | ||||||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS Biso mean: 23.8 Å2 | ||||||||||||||||||||||||||||||||||||||||
Refine LS restraints | *PLUS
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LS refinement shell | *PLUS Rfactor Rfree: 0.306 / Rfactor Rwork: 0.247 |