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- PDB-1zl5: Crystal structure of Glu335Gln mutant of Clostridium botulinum ne... -

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Basic information

Entry
Database: PDB / ID: 1zl5
TitleCrystal structure of Glu335Gln mutant of Clostridium botulinum neurotoxin E catalytic domain
Componentsbotulinum neurotoxin type E
KeywordsHYDROLASE / botulinum neurotoxin E / catalytic domain / light chain / Glu335Gln mutant / apoenzyme
Function / homology
Function and homology information


Toxicity of botulinum toxin type E (botE) / bontoxilysin / host cell presynaptic membrane / host cell cytoplasmic vesicle / host cell cytosol / protein transmembrane transporter activity / metalloendopeptidase activity / toxin activity / lipid binding / host cell plasma membrane ...Toxicity of botulinum toxin type E (botE) / bontoxilysin / host cell presynaptic membrane / host cell cytoplasmic vesicle / host cell cytosol / protein transmembrane transporter activity / metalloendopeptidase activity / toxin activity / lipid binding / host cell plasma membrane / proteolysis / zinc ion binding / extracellular region / membrane
Similarity search - Function
Zincin-like / Metalloproteases ("zincins"), catalytic domain like / Clostridium neurotoxin, translocation / Clostridium neurotoxin, Translocation domain / Clostridium neurotoxin, translocation domain / Clostridial neurotoxin zinc protease / Botulinum/Tetanus toxin, catalytic chain / Clostridium neurotoxin, receptor binding N-terminal / Clostridium neurotoxin, receptor-binding C-terminal / Clostridium neurotoxin, C-terminal receptor binding ...Zincin-like / Metalloproteases ("zincins"), catalytic domain like / Clostridium neurotoxin, translocation / Clostridium neurotoxin, Translocation domain / Clostridium neurotoxin, translocation domain / Clostridial neurotoxin zinc protease / Botulinum/Tetanus toxin, catalytic chain / Clostridium neurotoxin, receptor binding N-terminal / Clostridium neurotoxin, receptor-binding C-terminal / Clostridium neurotoxin, C-terminal receptor binding / Clostridium neurotoxin, N-terminal receptor binding / Kunitz inhibitor STI-like superfamily / Neutral zinc metallopeptidases, zinc-binding region signature. / Concanavalin A-like lectin/glucanase domain superfamily / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
Botulinum neurotoxin type E
Similarity search - Component
Biological speciesClostridium botulinum (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 2.6 Å
AuthorsAgarwal, R. / Binz, T. / Swaminathan, S.
CitationJournal: Biochemistry / Year: 2005
Title: Analysis of Active Site Residues of Botulinum Neurotoxin E by Mutational, Functional, and Structural Studies: Glu335Gln Is an Apoenzyme.
Authors: Agarwal, R. / Binz, T. / Swaminathan, S.
History
DepositionMay 5, 2005Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 5, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 11, 2017Group: Refinement description / Category: software
Revision 1.4Oct 20, 2021Group: Database references / Derived calculations / Category: database_2 / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.5Aug 23, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: botulinum neurotoxin type E
B: botulinum neurotoxin type E
hetero molecules


Theoretical massNumber of molelcules
Total (without water)95,65710
Polymers95,3742
Non-polymers2848
Water4,504250
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3210 Å2
ΔGint-68 kcal/mol
Surface area34130 Å2
MethodPISA
2
A: botulinum neurotoxin type E
B: botulinum neurotoxin type E
hetero molecules

A: botulinum neurotoxin type E
B: botulinum neurotoxin type E
hetero molecules


Theoretical massNumber of molelcules
Total (without water)191,31420
Polymers190,7474
Non-polymers56716
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_655-x+1,-y,z1
Buried area8390 Å2
ΔGint-149 kcal/mol
Surface area66290 Å2
MethodPISA
Unit cell
Length a, b, c (Å)88.950, 144.573, 83.429
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number18
Space group name H-MP21212

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Components

#1: Protein botulinum neurotoxin type E


Mass: 47686.797 Da / Num. of mol.: 2 / Fragment: catalytic domain (residues 2-421) / Mutation: E335Q
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Clostridium botulinum (bacteria) / Strain: NCTC-11219 / Plasmid: PET-9C / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: Q00496, bontoxilysin
#2: Chemical
ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Cl
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 250 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.67 Å3/Da / Density % sol: 48 %
Crystal growTemperature: 298 K / Method: vapor diffusion, sitting drop / pH: 5.6
Details: ammonium sulfate, lithium sulfate, sodium citrate, pH 5.6, VAPOR DIFFUSION, SITTING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X29A / Wavelength: 1.1 Å
DetectorType: ADSC QUANTUM 315 / Detector: CCD / Date: Jun 2, 2004 / Details: mirrors
RadiationMonochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.1 Å / Relative weight: 1
ReflectionResolution: 2.6→50 Å / Num. obs: 30978 / % possible obs: 89.8 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 6.9 % / Biso Wilson estimate: 13.4 Å2 / Rmerge(I) obs: 0.12 / Net I/σ(I): 4.8
Reflection shellResolution: 2.6→2.69 Å / Redundancy: 3.4 % / Rmerge(I) obs: 0.44 / Mean I/σ(I) obs: 2 / Num. unique all: 1878 / % possible all: 55.3

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Processing

Software
NameVersionClassification
CNS1.1refinement
CBASSdata collection
HKL-2000data scaling
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB entry 1T3A

1t3a


Resolution: 2.6→46.55 Å / Rfactor Rfree error: 0.013 / Data cutoff high absF: 47375.49 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
Details: In general, three loop regions (50-65, 188-200 and 234-244) are either disordered or have very weak electron density in both chains. In this entry, the missing residues are due to the ...Details: In general, three loop regions (50-65, 188-200 and 234-244) are either disordered or have very weak electron density in both chains. In this entry, the missing residues are due to the absence of interpretable electron density in those regions.
RfactorNum. reflection% reflectionSelection details
Rfree0.271 422 1.5 %RANDOM
Rwork0.209 ---
obs-28511 84.3 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 22.9893 Å2 / ksol: 0.330847 e/Å3
Displacement parametersBiso mean: 37.1 Å2
Baniso -1Baniso -2Baniso -3
1-13.75 Å20 Å20 Å2
2---13.91 Å20 Å2
3---0.16 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.47 Å0.34 Å
Luzzati d res low-5 Å
Luzzati sigma a0.74 Å0.56 Å
Refinement stepCycle: LAST / Resolution: 2.6→46.55 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6317 0 8 250 6575
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.007
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_dihedral_angle_d23.1
X-RAY DIFFRACTIONc_improper_angle_d0.8
X-RAY DIFFRACTIONc_mcbond_it1.281.5
X-RAY DIFFRACTIONc_mcangle_it2.232
X-RAY DIFFRACTIONc_scbond_it1.762
X-RAY DIFFRACTIONc_scangle_it2.712.5
LS refinement shellResolution: 2.6→2.76 Å / Rfactor Rfree error: 0.077 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.483 39 1.4 %
Rwork0.382 2717 -
obs--49.9 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2ion.param
X-RAY DIFFRACTION3water_rep.param

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