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- PDB-2zal: Crystal structure of E. coli isoaspartyl aminopeptidase/L-asparag... -
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Open data
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Basic information
Entry | Database: PDB / ID: 2zal | |||||||||
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Title | Crystal structure of E. coli isoaspartyl aminopeptidase/L-asparaginase in complex with L-aspartate | |||||||||
![]() | (L-asparaginase![]() | |||||||||
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Function / homology | ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ![]() ![]() ![]() | |||||||||
![]() | Michalska, K. / Brzezinski, K. / Jaskolski, M. | |||||||||
![]() | ![]() Title: Crystal structure of isoaspartyl aminopeptidase in complex with L-aspartate Authors: Michalska, K. / Brzezinski, K. / Jaskolski, M. #1: Journal: Acta Crystallogr.,Sect.D / Year: 2000 Title: Crystallization and preliminary crystallographic studies of a new L-asparaginase encoded by the Escherichia coli genome Authors: Borek, D. / Jaskolski, M. #2: Journal: Nature / Year: 1995 Title: A protein catalytic framework with an N-terminal nucleophile is capable of self-activation Authors: Brannigan, J.A. / Dodson, G. / Duggleby, H.J. / Moody, P.C.E. / Smith, J.L. / Tomchick, D.R. / Murzin, A.G. #3: ![]() Title: Crystal structure of glycosylasparaginase from Flavobacterium meningosepticum Authors: Xuan, J. / Tarentino, A.L. / Grimwood, B.G. / Plummer Jr., T.H. / Cui, T. / Guan, C. / Van Roey, P. #4: ![]() Title: Three-dimensional structure of human lysosomal aspartylglucosaminidase Authors: Oinonen, C. / Tikkanen, R. / Rouvinen, J. / Peltonen, L. #5: ![]() Title: Crystal structures of Flavobacterium glycosylasparaginase. An N-terminal nucleophile hydrolase activated by intramolecular proteolysis Authors: Guo, H.-C. / Xu, Q. / Buckley, D. / Guan, C. #6: ![]() Title: Structural insights into the mechanism of intramolecular proteolysis Authors: Xu, Q. / Buckley, D. / Guan, C. / Guo, H.-C. #7: Journal: Biochem.J. / Year: 2004 Title: Autoproteolytic activation of human aspartylglucosaminidase Authors: Saarela, J. / Oinonen, C. / Jalanko, A. / Rouvinen, J. / Peltonen, L. #8: ![]() Title: Structure of the isoaspartyl peptidase with L-asparaginase activity from Escherichia coli Authors: Prahl, A. / Pazgier, M. / Hejazi, M. / Lockau, W. / Lubkowski, J. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 128.5 KB | Display | ![]() |
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PDB format | ![]() | 99.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 1k2xS 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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Unit cell |
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Components
-Protein , 2 types, 4 molecules ACBD
#1: Protein | ![]() Mass: 17071.527 Da / Num. of mol.: 2 / Fragment: N-terminal subunit (alpha), UNP residues 2-161 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Description: The N-terminal methionine has been removed by an intracellular aminopeptidase (E. coli). During expression and purification, the protein undergoes autoproteolytic cleavage into alpha and ...Description: The N-terminal methionine has been removed by an intracellular aminopeptidase (E. coli). During expression and purification, the protein undergoes autoproteolytic cleavage into alpha and beta subunits. The residues 162-178 were not present in the crystallized material due to partial, non-specific degradation at the c-terminus. The number of missing residues was determined by mass spectrometry Gene: ybiK (iaaA) / Plasmid: pET11d / Production host: ![]() ![]() ![]() References: UniProt: P37595, ![]() ![]() #2: Protein | ![]() Mass: 13812.512 Da / Num. of mol.: 2 / Fragment: C-terminal subunit (beta), UNP residues 179-315 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Description: During expression and purification, the protein undergoes autoproteolytic cleavage into alpha and beta subunits. The residues 316-321 were not present in the crystallized material due to ...Description: During expression and purification, the protein undergoes autoproteolytic cleavage into alpha and beta subunits. The residues 316-321 were not present in the crystallized material due to partial, non-specific degradation at the C-terminus. The number of missing residues was determined by mass spectrometry Gene: ybiK (iaaA) / Plasmid: pET11d / Production host: ![]() ![]() ![]() References: UniProt: P37595, ![]() ![]() |
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-Non-polymers , 6 types, 263 molecules ![](data/chem/img/NA.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/ASP.gif)
![](data/chem/img/CL.gif)
![](data/chem/img/TRS.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/ASP.gif)
![](data/chem/img/CL.gif)
![](data/chem/img/TRS.gif)
![](data/chem/img/HOH.gif)
#3: Chemical | #4: Chemical | ChemComp-CA / #5: Chemical | ChemComp-ASP / ![]() #6: Chemical | ChemComp-CL / | ![]() #7: Chemical | ![]() #8: Water | ChemComp-HOH / | ![]() |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.3 Å3/Da / Density % sol: 46.41 % |
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Crystal grow![]() | Temperature: 292 K / Method: vapor diffusion, hanging drop / pH: 8.5 Details: 100mM Tris/HCl, 80mM calcium chloride, 100mM sodium aspartate, 17% PEG 4000, 13% PEG 400, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MARRESEARCH / Detector: CCD / Date: Apr 28, 2002 |
Radiation | Monochromator: Si single crystal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength![]() |
Reflection | Resolution: 1.9→20 Å / Num. all: 43572 / Num. obs: 43572 / % possible obs: 95.8 % / Observed criterion σ(F): 0 / Observed criterion σ(I): -3 / Redundancy: 3.5 % / Biso Wilson estimate: 18.67 Å2 / Rmerge(I) obs: 0.064 / Net I/σ(I): 15 |
Reflection shell | Resolution: 1.9→1.97 Å / Redundancy: 3 % / Rmerge(I) obs: 0.256 / Mean I/σ(I) obs: 2.2 / Num. unique all: 4085 / % possible all: 91.3 |
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Processing
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Refinement | Method to determine structure![]() ![]() Starting model: PDB entry 1K2X Resolution: 1.9→20 Å / Cor.coef. Fo:Fc: 0.965 / Cor.coef. Fo:Fc free: 0.955 / SU B: 2.746 / SU ML: 0.08 / TLS residual ADP flag: LIKELY RESIDUAL / Isotropic thermal model: Isotropic / Cross valid method: R-free / σ(F): 0 / σ(I): 0 / ESU R: 0.135 / ESU R Free: 0.121 / Stereochemistry target values: Engh & Huber Details: MAXIMUM LIKELIHOOD TARGET. THE REFINEMENT INCLUDED TLS PARAMETERS. THE RESIDUES 158-161 FROM CHAIN C (SUBUNIT ALPHA) AS WELL AS THE RESIDUES 314-315 FROM THE CHAINS B AND D (SUBUNITS BETA) ...Details: MAXIMUM LIKELIHOOD TARGET. THE REFINEMENT INCLUDED TLS PARAMETERS. THE RESIDUES 158-161 FROM CHAIN C (SUBUNIT ALPHA) AS WELL AS THE RESIDUES 314-315 FROM THE CHAINS B AND D (SUBUNITS BETA) WERE NOT MODELED DUE TO POOR ELECTRON DENSITY. CHAIN A IS COMPLETE. IN EACH OF THE TWO ACTIVE SITES, A CLEARLY VISIBLE PRODUCT OF THE ENZYMATIC REACTION, L-ASPARTATE, IS MODELED. IN INTERSTITIAL POSITIONS, THE STRUCTURE CONTAINS A BIG 3L-ASP/5CA COORDINATION COMPLEX.
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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: 13.27 Å2
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Refinement step | Cycle: LAST / Resolution: 1.9→20 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 1.904→2.006 Å / Total num. of bins used: 10 /
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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