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- PDB-1t7b: Crystal structure of mutant Lys8Gln of scorpion alpha-like neurot... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1t7b | ||||||
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Title | Crystal structure of mutant Lys8Gln of scorpion alpha-like neurotoxin BmK M1 from Buthus martensii Karsch | ||||||
![]() | Alpha-like neurotoxin BmK-I | ||||||
![]() | TOXIN / BmK M1 Mutant / Scorpion toxin / Buthus martensii Karsch | ||||||
Function / homology | ![]() sodium channel inhibitor activity / defense response / toxin activity / extracellular region Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() | ||||||
![]() | Xiang, Y. / Guan, R.J. / He, X.L. / Wang, C.G. / Wang, M. / Zhang, Y. / Sundberg, E.J. / Wang, D.C. | ||||||
![]() | ![]() Title: Structural Mechanism Governing Cis and Trans Isomeric States and an Intramolecular Switch for Cis/Trans Isomerization of a Non-proline Peptide Bond Observed in Crystal Structures of Scorpion Toxins Authors: Guan, R.J. / Xiang, Y. / He, X.L. / Wang, C.G. / Wang, M. / Zhang, Y. / Sundberg, E.J. / Wang, D.C. #1: ![]() Title: Crystal structures of two alpha-like scorpion toxins: non-proline cis peptide bonds and implications for new binding site selectivity on the sodium channel Authors: He, X.L. / Li, H.M. / Zeng, Z.H. / Liu, X.Q. / Wang, M. / Wang, D.C. #2: Journal: Protein Expr.Purif. / Year: 1999 Title: Expression and purification of the BmK M1 neurotoxin from the scorpion Buthus martensii Karsch Authors: Shao, F. / Xiong, Y.M. / Zhu, R.H. / Ling, M.H. / Chi, C.W. / Wang, D.C. #3: Journal: Toxicon / Year: 1997 Title: The CDNA and genomic DNA sequences of a mammalian neurotoxin from the scorpion Buthus martensii Karsch Authors: Xiong, Y.M. / Ling, M.H. / Wang, D.C. / Chi, C.W. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 26.4 KB | Display | ![]() |
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PDB format | ![]() | 16.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 1kv0C ![]() 1t7aC ![]() 1t7eC ![]() 1sn1S 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: 7435.405 Da / Num. of mol.: 1 / Mutation: K8Q Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: BmK M1 / Plasmid: PVT 102U-ALPHA / Production host: ![]() ![]() |
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#2: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 1.8 Å3/Da / Density % sol: 32 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, hanging drop / pH: 6.5 Details: PEG8000, sodium cacodylate, ammonium sulfate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
-Data collection
Diffraction | Mean temperature: 293 K |
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Diffraction source | Source: ![]() |
Detector | Type: MARRESEARCH / Detector: IMAGE PLATE / Date: Oct 8, 2002 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 1.85→30 Å / Num. all: 4831 / Num. obs: 4831 / % possible obs: 97.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.8 % / Biso Wilson estimate: 15.4 Å2 / Rmerge(I) obs: 0.083 / Rsym value: 0.083 / Net I/σ(I): 22 |
Reflection shell | Resolution: 1.85→1.92 Å / Redundancy: 4.7 % / Rmerge(I) obs: 0.283 / Mean I/σ(I) obs: 6 / Num. unique all: 458 / Rsym value: 0.283 / % possible all: 93.8 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1SN1 Resolution: 1.85→30 Å / Rfactor Rfree error: 0.01 / Data cutoff high absF: 550329.31 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 32.809 Å2 / ksol: 0.331341 e/Å3 | ||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 19 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 1.85→30 Å
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Refine LS restraints |
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LS refinement shell | Highest resolution: 1.85 Å / Total num. of bins used: 6 /
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Xplor file |
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