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- PDB-1ekb: THE SERINE PROTEASE DOMAIN OF ENTEROPEPTIDASE BOUND TO INHIBITOR ... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1ekb | ||||||
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Title | THE SERINE PROTEASE DOMAIN OF ENTEROPEPTIDASE BOUND TO INHIBITOR VAL-ASP-ASP-ASP-ASP-LYS-CHLOROMETHANE | ||||||
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![]() | HYDROLASE/HYDROLASE INHIBITOR / ENTEROPEPTIDASE / TRYPSINOGEN ACTIVATION / HYDROLASE-HYDROLASE INHIBITOR COMPLEX | ||||||
Function / homology | ![]() protein digestion / enteropeptidase / trypsinogen activation / scavenger receptor activity / membrane => GO:0016020 / serine-type endopeptidase activity / membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() | ||||||
![]() | Fuetterer, K. / Lu, D. / Sadler, J.E. / Waksman, G. | ||||||
![]() | ![]() Title: Crystal structure of enteropeptidase light chain complexed with an analog of the trypsinogen activation peptide. Authors: Lu, D. / Futterer, K. / Korolev, S. / Zheng, X. / Tan, K. / Waksman, G. / Sadler, J.E. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 60.6 KB | Display | ![]() |
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PDB format | ![]() | 46.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 1gcdS 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
#1: Protein/peptide | Mass: 1419.708 Da / Num. of mol.: 1 Fragment: 13-AMINO ACID REMNANT OF AMINO TERMINAL DOMAIN OF HEAVY CHAIN Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() | ||||
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#2: Protein | Mass: 26283.785 Da / Num. of mol.: 1 / Fragment: SERINE PROTEASE DOMAIN OR LIGHT CHAIN Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() | ||||
#3: Protein/peptide | Mass: 740.158 Da / Num. of mol.: 1 / Source method: obtained synthetically | ||||
#4: Chemical | #5: Water | ChemComp-HOH / | Compound details | VAL-ASP-ASP-ASP-ASP-LYK-CHLOROMETHANE (CHAIN C) HAS FORMED CONNECTIONS TO ENTEROPETPIDASE: 1) VIA A ...VAL-ASP-ASP-ASP-ASP-LYK-CHLOROMETH | |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.12 Å3/Da / Density % sol: 40 % | ||||||||||||||||||||||||||||||
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Crystal grow | pH: 7.5 / Details: pH 7.5 | ||||||||||||||||||||||||||||||
Crystal | *PLUS | ||||||||||||||||||||||||||||||
Crystal grow | *PLUS Temperature: 20 ℃ / Method: vapor diffusion, hanging drop / pH: 5 | ||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() |
Detector | Type: RIGAKU / Detector: IMAGE PLATE / Date: Apr 15, 1998 |
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: 2.3→30 Å / Num. obs: 10541 / % possible obs: 92.6 % / Observed criterion σ(I): 1 / Redundancy: 3 % / Biso Wilson estimate: 32.2 Å2 / Rmerge(I) obs: 0.044 / Rsym value: 0.044 / Net I/σ(I): 10 |
Reflection shell | Resolution: 2.3→2.38 Å / Redundancy: 2 % / Rmerge(I) obs: 0.088 / Mean I/σ(I) obs: 3 / Rsym value: 0.088 / % possible all: 89.2 |
Reflection | *PLUS Num. measured all: 28051 |
Reflection shell | *PLUS % possible obs: 89.2 % |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1GCD Resolution: 2.3→30 Å / Rfactor Rfree error: 0.012 / Data cutoff high rms absF: 354608.98 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 2
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 24.18 Å2 / ksol: 0.347 e/Å3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 23.8 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.3→30 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.3→2.4 Å / Rfactor Rfree error: 0.044 / Total num. of bins used: 8
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Xplor file |
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Software | *PLUS Name: CNS / Version: 0.5 / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | *PLUS σ(F): 2 / % reflection Rfree: 4.9 % / Rfactor obs: 0.234 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 0.367 / % reflection Rfree: 5.8 % / Rfactor Rwork: 0.295 |