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- PDB-1s36: Crystal structure of a Ca2+-discharged photoprotein: Implications... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1s36 | ||||||
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Title | Crystal structure of a Ca2+-discharged photoprotein: Implications for the mechanisms of the calcium trigger and the bioluminescence | ||||||
![]() | Obelin | ||||||
![]() | LUMINESCENT PROTEIN / Photoprotein / obelin / bioluminescence / calcium binding / EF-hand / aequorin / Structural Genomics / PSI / Protein Structure Initiative / Southeast Collaboratory for Structural Genomics / SECSG | ||||||
Function / homology | ![]() | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() | ||||||
![]() | Deng, L. / Markova, S.V. / Vysotski, E.S. / Liu, Z.-J. / Lee, J. / Rose, J. / Wang, B.-C. / Southeast Collaboratory for Structural Genomics (SECSG) | ||||||
![]() | ![]() Title: Crystal structure of a Ca2+-discharged photoprotein: implications for mechanisms of the calcium trigger and bioluminescence Authors: Deng, L. / Markova, S.V. / Vysotski, E.S. / Liu, Z.-J. / Lee, J. / Rose, J. / Wang, B.-C. #1: ![]() Title: Structure of the Ca2+-regulated photoprotein obelin at 1.7 resolution determined directly from its sulfur substructure Authors: Liu, Z.-J. / Vysotski, E.S. / Chen, C.-J. / Rose, J. / Lee, J. / Wang, B.-C. #2: ![]() Title: Preparation and preliminary study of crystals of the recombinant calcium-regulated photoprotein obelin from the bioluminescent hydroid Obelia longissima Authors: Vysotski, E.S. / Liu, Z.-J. / Rose, J. / Wang, B.-C. / Lee, J. #3: ![]() Title: Structural basis for the emission of violet bioluminescence from a W92F obelin mutant Authors: Deng, L. / Vysotski, E.S. / Liu, Z.-J. / Markova, S.V. / Malikova, N.P. / Lee, J. / Rose, J. / Wang, B.-C. #4: ![]() Title: Violet Bioluminescence and Fast Kinetics from W92F Obelin: Structure-Based Proposals for the Bioluminescence Triggering and the Identification of the Emitting Species Authors: Vysotski, E.S. / Liu, Z.-J. / Markova, S.V. / Blinks, J. / Deng, L. / Frank, L.A. / Herko, M. / Malikova, N.P. / Rose, J.P. / Wang, B.-C. / Lee, J. #5: ![]() Title: Atomic resolution structure of obelin: Soaking with calcium enhances electron density of the second oxygen atom substituted at the C2-position of coelenterazine Authors: Liu, Z.-J. / Vysotski, E.S. / Deng, L. / Lee, J. / Rose, J. / Wang, B.-C. #6: ![]() Title: Preparation and X-ray Crystallographic Analysis of the Ca2+-discharged Photoprotein Obelin Authors: Deng, L. / Markova, S.V. / Vysotski, E.S. / Liu, Z.-J. / Lee, J. / Rose, J. / Wang, B.-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 | ![]() | 57.9 KB | Display | ![]() |
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PDB format | ![]() | 40.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 1jf2S S: Starting model for refinement |
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Similar structure data | |
Other databases |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
-Protein , 1 types, 1 molecules A
#1: Protein | Mass: 22215.869 Da / Num. of mol.: 1 / Mutation: W92F Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Non-polymers , 5 types, 149 molecules ![](data/chem/img/NA.gif)
![](data/chem/img/CL.gif)
![](data/chem/img/CEI.gif)
![](data/chem/img/GOL.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/CL.gif)
![](data/chem/img/CEI.gif)
![](data/chem/img/GOL.gif)
![](data/chem/img/HOH.gif)
#2: Chemical | ChemComp-NA / |
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#3: Chemical | ChemComp-CL / |
#4: Chemical | ChemComp-CEI / |
#5: Chemical | ChemComp-GOL / |
#6: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.31 Å3/Da / Density % sol: 46.86 % |
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Crystal grow | Temperature: 277 K / Method: modified microbatch / pH: 7.5 Details: 1.5 M tri-sodium citrate, 0.1 M Na-HEPES, pH 7.5, modified microbatch, temperature 277K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() |
Detector | Type: BRUKER SMART 6000 / Detector: CCD / Date: Nov 20, 2002 / Details: Rigaku/msc HiRes2 |
Radiation | Monochromator: Confocal optics / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 1.96→72.46 Å / Num. obs: 15775 / % possible obs: 1 % / Observed criterion σ(I): -3 / Redundancy: 14.91 % / Biso Wilson estimate: 15 Å2 / Rsym value: 0.06 / Net I/σ(I): 9.37 |
Reflection shell | Resolution: 1.96→2.05 Å / Mean I/σ(I) obs: 2.11 / Num. unique all: 1982 / Rsym value: 0.19 / % possible all: 0.97 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1JF2 Resolution: 1.96→50 Å / Cor.coef. Fo:Fc: 0.916 / Cor.coef. Fo:Fc free: 0.886 / SU B: 3.274 / SU ML: 0.1 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.203 / ESU R Free: 0.174 / Stereochemistry target values: MAXIMUM LIKELIHOOD
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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: 16.388 Å2
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Refinement step | Cycle: LAST / Resolution: 1.96→50 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 1.957→2.008 Å / Total num. of bins used: 20
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