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- PDB-1enm: UDA TRISACCHARIDE COMPLEX. CRYSTAL STRUCTURE OF URTICA DIOICA AGG... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1enm | ||||||||||||
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Title | UDA TRISACCHARIDE COMPLEX. CRYSTAL STRUCTURE OF URTICA DIOICA AGGLUTININ, A SUPERANTIGEN PRESENTED BY MHC MOLECULES OF CLASS I AND CLASS II | ||||||||||||
![]() | AGGLUTININ ISOLECTIN I/AGGLUTININ ISOLECTIN V/ AGGLUTININ ISOLECTIN VI | ||||||||||||
![]() | SUGAR BINDING PROTEIN / LECTIN / HEVEIN DOMAIN / UDA / SUPERANTIGEN / SACCHARIDE BINDING | ||||||||||||
Function / homology | ![]() chitinase / chitinase activity / chitin catabolic process / chitin binding / polysaccharide catabolic process / defense response to fungus / cell wall macromolecule catabolic process / carbohydrate binding / killing of cells of another organism / metal ion binding Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | ![]() ![]() ![]() | ||||||||||||
![]() | Saul, F.A. / Rovira, P. / Boulot, G. / Van Damme, E.J.M. / Peumans, W.J. / Truffa-Bachi, P. / Bentley, G.A. | ||||||||||||
![]() | ![]() Title: Crystal structure of Urtica dioica agglutinin, a superantigen presented by MHC molecules of class I and class II. Authors: Saul, F.A. / Rovira, P. / Boulot, G. / Van Damme, E.J.M. / Peumans, W.J. / Truffa-Bachi, P. / Bentley, G.A. #1: ![]() Title: Characterisation of Urtica dioica Agglutinin Isolectins and the Encoding Gene Family Authors: Does, M.P. / Ng, D.K. / Dekker, H.L. / Peumans, W.J. / Houterman, P.M. / Van Damme, E.J. / Cornelissen, B.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 | ![]() | 34 KB | Display | ![]() |
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PDB format | ![]() | 21.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 800.1 KB | Display | ![]() |
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Full document | ![]() | 801.9 KB | Display | |
Data in XML | ![]() | 7.3 KB | Display | |
Data in CIF | ![]() | 8.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1eisSC ![]() 1en2C 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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Unit cell |
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Components
#1: Protein | Mass: 9350.269 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: PURIFIED FROM RHIZOMES / Source: (natural) ![]() |
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#2: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose / triacetyl-beta-chitotriose |
#3: Water | ChemComp-HOH / |
Compound details | The structure comprises two hevein-like domains, each containing a distinct saccharide-binding site. ...The structure comprises two hevein-like domains, each containing a distinct saccharide-binding site. The two binding sites are located at opposite extremities of the molecule. The principal binding-site residues are SER 19, TRP 21, TRP 23, and TYR 30 on the first domain, and the homologous residues SER 65, HIS 67, TRP 69, and TYR 76 on the second domain. The crystallographic asymmetric unit contains one molecule of UDA and a single trisaccharide ligand. The ligand interacts simultaneously with the binding site on the N-terminal domain of one molecule and that of the C-terminal domain of a symmetry-related molecule. |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.72 Å3/Da / Density % sol: 54.81 % | ||||||||||||||||||||||||||||||
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Crystal grow | Temperature: 290 K / Method: vapor diffusion, sitting drop / pH: 6 Details: PEG 6000, sodium acetate, sodium chloride, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 290.0K | ||||||||||||||||||||||||||||||
Crystal grow | *PLUS PH range low: 6.5 / PH range high: 5.5 | ||||||||||||||||||||||||||||||
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: MARRESEARCH / Detector: IMAGE PLATE / Date: Oct 22, 1999 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.96 Å / Relative weight: 1 |
Reflection | Resolution: 1.9→25 Å / Num. all: 8284 / Num. obs: 8284 / % possible obs: 96.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.9 % / Biso Wilson estimate: 30.8 Å2 / Rmerge(I) obs: 0.102 / Net I/σ(I): 8.8 |
Reflection shell | Resolution: 1.9→1.97 Å / Redundancy: 3.9 % / Rmerge(I) obs: 0.473 / Num. unique all: 817 / % possible all: 98 |
Reflection | *PLUS Num. obs: 8283 |
Reflection shell | *PLUS % possible obs: 98 % |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 1EIS Resolution: 1.9→25 Å / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber Details: The structure was determined by molecular replacement methods based on the uncomplexed UDA structure (1EIS). A bulk solvent correction was applied.
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Refinement step | Cycle: LAST / Resolution: 1.9→25 Å
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Refine LS restraints |
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Software | *PLUS Name: REFMAC / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | *PLUS % reflection Rfree: 5 % / Rfactor Rfree: 0.239 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS |