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- PDB-1l9w: CRYSTAL STRUCTURE OF 3-DEHYDROQUINASE FROM SALMONELLA TYPHI COMPL... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1l9w | ||||||
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Title | CRYSTAL STRUCTURE OF 3-DEHYDROQUINASE FROM SALMONELLA TYPHI COMPLEXED WITH REACTION PRODUCT | ||||||
![]() | 3-dehydroquinate dehydratase aroD | ||||||
![]() | LYASE / TIM-Barrel / complex with product | ||||||
Function / homology | ![]() 3,4-dihydroxybenzoate biosynthetic process / 3-dehydroquinate dehydratase / 3-dehydroquinate dehydratase activity / chorismate biosynthetic process / aromatic amino acid family biosynthetic process / amino acid biosynthetic process Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Lee, W.H. / Perles, L.A. / Nagem, R.A.P. / Shrive, A.K. / Hawkins, A. / Sawyer, L. / Polikarpov, I. | ||||||
![]() | ![]() Title: Comparison of different crystal forms of 3-dehydroquinase from Salmonella typhi and its implication for the enzyme activity. Authors: Lee, W.H. / Perles, L.A. / Nagem, R.A. / Shrive, A.K. / Hawkins, A. / Sawyer, L. / Polikarpov, I. | ||||||
History |
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Remark 600 | HETEROGEN DHS: 3-AMINO-4,5-DIHYDROXY-CYCLOHEX-1-ENECARBOXYLATE GROUP. Formula:4(C7 H8 N1 O4). THE ...HETEROGEN DHS: 3-AMINO-4,5-DIHYDROXY-CYCLOHEX-1-ENECARBOXYLATE GROUP. Formula:4(C7 H8 N1 O4). THE PRODUCT IS COVALENTLY LINKED TO LYS170 THROUGH FORMATION OF A SCHIFF BASE (IMINE) INTERMEDIATE THAT IS THEN REDUCED WITH BOROHYDRIDE. THE EMPIRICAL FORMULA GIVEN CONTAINS THE CARBOXYLATE PROTON BUT NOT THE 3-KETO OXYGEN (WHICH IS REPLACED BY THE NZ OF LYS170 IN FORMING THE SCHIFF BASE). LYS 170 FORMS THE IMINE INTERMEDIATE WITH THE AID OF HIS 143. ARG 213 INTERACTS WITH THE CARBOXYL GROUP OF THE 3-DEHYDROQUINATE SUBSTRATE. |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 204.4 KB | Display | ![]() |
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PDB format | ![]() | 164.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 1gqnC ![]() 1qfeS 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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2 | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 27654.912 Da / Num. of mol.: 4 / Source method: isolated from a natural source Details: THE PRODUCT 3-DEHYDROSHIKIMATE IS COVALENTLY ATTACHED TO THE ACTIVE SITE LYS 170 BY BOROHYDRIDE REDUCTION OF THE IMINE (SCHIFF BASE) Source: (natural) ![]() #2: Chemical | ChemComp-DHS / #3: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.62 Å3/Da / Density % sol: 53 % | ||||||||||||||||||
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, hanging drop / pH: 5.5 Details: PEG 4000, citrate-phosphate, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K | ||||||||||||||||||
Crystal grow | *PLUS Method: sparse matrix method / PH range low: 6 / PH range high: 5 | ||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 277 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MARRESEARCH / Detector: IMAGE PLATE |
Radiation | Monochromator: DOUBLE CRYSTAL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.928 Å / Relative weight: 1 |
Reflection | Resolution: 2.1→10 Å / Num. all: 49700 / Num. obs: 49700 / % possible obs: 76.45 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2 |
Reflection shell | Resolution: 2.1→2.15 Å / % possible all: 70.12 |
Reflection | *PLUS Highest resolution: 2.1 Å / Redundancy: 3.42 % / Rmerge(I) obs: 0.069 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1QFE Resolution: 2.1→10 Å / Cross valid method: THROUGHOUT / σ(F): 2
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Refinement step | Cycle: LAST / Resolution: 2.1→10 Å
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Refine LS restraints |
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Refinement | *PLUS Highest resolution: 2.1 Å / % reflection Rfree: 5 % | |||||||||||||||||||||||||
Solvent computation | *PLUS | |||||||||||||||||||||||||
Displacement parameters | *PLUS | |||||||||||||||||||||||||
Refine LS restraints | *PLUS
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