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- PDB-1fnu: STRUCTURE OF STREPTOCOCCAL PYROGENIC EXOTOXIN A -

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Basic information

Entry
Database: PDB / ID: 1fnu
TitleSTRUCTURE OF STREPTOCOCCAL PYROGENIC EXOTOXIN A
ComponentsEXOTOXIN TYPE A PRECURSOR (ALLELE 1)
KeywordsTOXIN / superantigen / exotoxin A
Function / homology
Function and homology information


modulation of host virulence by virus / : / toxin activity / extracellular region
Similarity search - Function
Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin signature 1. / Staphylococcal/streptococcal toxin, bacterial / Staphylococcal/Streptococcal toxin, OB-fold / Staphylococcal/Streptococcal toxin, OB-fold domain / Staphylococcal/Streptococcal toxin, beta-grasp domain / Staphylococcal/Streptococcal toxin, beta-grasp domain / Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin, conserved site / Staphyloccocal enterotoxin/Streptococcal pyrogenic exotoxin signature 2. / Superantigen, staphylococcal/streptococcal toxin, bacterial / Ubiquitin-like (UB roll) - #120 ...Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin signature 1. / Staphylococcal/streptococcal toxin, bacterial / Staphylococcal/Streptococcal toxin, OB-fold / Staphylococcal/Streptococcal toxin, OB-fold domain / Staphylococcal/Streptococcal toxin, beta-grasp domain / Staphylococcal/Streptococcal toxin, beta-grasp domain / Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin, conserved site / Staphyloccocal enterotoxin/Streptococcal pyrogenic exotoxin signature 2. / Superantigen, staphylococcal/streptococcal toxin, bacterial / Ubiquitin-like (UB roll) - #120 / Superantigen toxin, C-terminal / OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #110 / Enterotoxin / Ubiquitin-like (UB roll) / OB fold (Dihydrolipoamide Acetyltransferase, E2P) / Roll / Beta Barrel / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
: / Exotoxin type A / Exotoxin type A
Similarity search - Component
Biological speciesStreptococcus pyogenes phage T12 (virus)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 1.94 Å
AuthorsEarhart, C.A. / Vath, G.M. / Roggiani, M. / Schlievert, P.M. / Ohlendorf, D.H.
CitationJournal: Protein Sci. / Year: 2000
Title: Structure of streptococcal pyrogenic exotoxin A reveals a novel metal cluster.
Authors: Earhart, C.A. / Vath, G.M. / Roggiani, M. / Schlievert, P.M. / Ohlendorf, D.H.
History
DepositionAug 23, 2000Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 17, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: EXOTOXIN TYPE A PRECURSOR (ALLELE 1)
B: EXOTOXIN TYPE A PRECURSOR (ALLELE 1)
C: EXOTOXIN TYPE A PRECURSOR (ALLELE 1)
D: EXOTOXIN TYPE A PRECURSOR (ALLELE 1)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)105,13519
Polymers103,4484
Non-polymers1,68615
Water11,295627
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)55.3, 126.8, 148.4
Angle α, β, γ (deg.)90, 90, 90
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein
EXOTOXIN TYPE A PRECURSOR (ALLELE 1)


Mass: 25862.098 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Streptococcus pyogenes phage T12 (virus) / Species: Streptococcus pyogenes phage / Strain: PHAGE T12 / References: UniProt: P62560, UniProt: P0DJY8*PLUS
#2: Chemical
ChemComp-CD / CADMIUM ION


Mass: 112.411 Da / Num. of mol.: 15 / Source method: obtained synthetically / Formula: Cd
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 627 / 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: 2.51 Å3/Da / Density % sol: 51.07 %
Crystal growMethod: vapor diffusion, hanging drop
Details: 0.25 M LiCl, 5-20 mM CdCL2, 4-20% PEG 8000, 50 mM Na acetate, VAPOR DIFFUSION, HANGING DROP
PH range: 3-7
Crystal grow
*PLUS
Temperature: 18 ℃ / pH: 7.5
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
110 mg/mlprotein1drop
220 mMHEPES1drop
30.25-1.0 M1reservoirLiCl
45-20 mM1reservoirCdCl2
54-20 %PEG80001reservoir
650 mMsodium acetate1reservoir

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Data collection

DiffractionMean temperature: 293 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 19-ID / Wavelength: 1.034
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.034 Å / Relative weight: 1
ReflectionHighest resolution: 1.94 Å / Num. obs: 74721 / % possible obs: 92 % / Rmerge(I) obs: 0.062 / Net I/σ(I): 10
Reflection
*PLUS
% possible obs: 92 %

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
CNSrefinement
X-PLORphasing
RefinementResolution: 1.94→20 Å / σ(F): 1
RfactorNum. reflection% reflection
Rfree0.281 3338 -
Rwork0.2233 --
all-81770 -
obs-65174 79.7 %
Refinement stepCycle: LAST / Resolution: 1.94→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7292 0 15 627 7934
Software
*PLUS
Name: CNS / Classification: refinement
Refinement
*PLUS
Lowest resolution: 20 Å / σ(F): 1 / Rfactor obs: 0.223
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.026
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_deg2.5
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scangle_it

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