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- PDB-3q8a: Crystal structure of WT Protective Antigen (pH 5.5) -

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Basic information

Entry
Database: PDB / ID: 3q8a
TitleCrystal structure of WT Protective Antigen (pH 5.5)
ComponentsProtective antigen
KeywordsTOXIN / Protective Antigen / Anthrax / pH stability / PROTEIN BINDING
Function / homology
Function and homology information


positive regulation of apoptotic process in another organism / host cell cytosol / negative regulation of MAPK cascade / Uptake and function of anthrax toxins / host cell endosome membrane / protein homooligomerization / toxin activity / host cell plasma membrane / extracellular region / membrane ...positive regulation of apoptotic process in another organism / host cell cytosol / negative regulation of MAPK cascade / Uptake and function of anthrax toxins / host cell endosome membrane / protein homooligomerization / toxin activity / host cell plasma membrane / extracellular region / membrane / identical protein binding / metal ion binding
Similarity search - Function
Toxin - Anthrax Protective Antigen; domain 1 / Toxin - Anthrax Protective Antigen;domain 1 / Protective antigen, heptamerisation domain / Immunoglobulin-like - #810 / Ubiquitin-like (UB roll) - #110 / Protective antigen domain 4 / : / Anthrax protective antigen, immunoglobulin-like domain / Bacterial exotoxin B / Protective antigen, heptamerisation domain ...Toxin - Anthrax Protective Antigen; domain 1 / Toxin - Anthrax Protective Antigen;domain 1 / Protective antigen, heptamerisation domain / Immunoglobulin-like - #810 / Ubiquitin-like (UB roll) - #110 / Protective antigen domain 4 / : / Anthrax protective antigen, immunoglobulin-like domain / Bacterial exotoxin B / Protective antigen, heptamerisation domain / Protective antigen, Ca-binding domain / Clostridial binary toxin B/anthrax toxin PA, domain 3 / Protective antigen, heptamerisation domain superfamily / Clostridial binary toxin B/anthrax toxin PA Ca-binding domain / Clostridial binary toxin B/anthrax toxin PA domain 2 / Clostridial binary toxin B/anthrax toxin PA domain 3 / PA14/GLEYA domain / PA14 domain profile. / PA14 domain / PA14 / PA14 domain / Ubiquitin-like (UB roll) / Jelly Rolls / Roll / Alpha-Beta Complex / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Biological speciesBacillus anthracis (anthrax bacterium)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 3.129 Å
AuthorsRajapaksha, M. / Lovell, S. / Janowiak, B.E. / Andra, K.K. / Battaile, K.P. / Bann, J.G.
CitationJournal: Protein Sci. / Year: 2012
Title: pH effects on binding between the anthrax protective antigen and the host cellular receptor CMG2.
Authors: Rajapaksha, M. / Lovell, S. / Janowiak, B.E. / Andra, K.K. / Battaile, K.P. / Bann, J.G.
History
DepositionJan 6, 2011Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 18, 2012Provider: repository / Type: Initial release
Revision 1.1Aug 15, 2012Group: Database references
Revision 1.2Oct 3, 2012Group: Database references
Revision 1.3Sep 13, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Protective antigen
hetero molecules


Theoretical massNumber of molelcules
Total (without water)82,8493
Polymers82,7691
Non-polymers802
Water0
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)70.837, 93.845, 114.877
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121
Detailsbiological unit is the same as asym.

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Components

#1: Protein Protective antigen / PA / Anthrax toxins translocating protein / PA-83 / PA83 / Protective antigen PA-20 / PA20 / ...PA / Anthrax toxins translocating protein / PA-83 / PA83 / Protective antigen PA-20 / PA20 / Protective antigen PA-63 / PA63


Mass: 82768.828 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacillus anthracis (anthrax bacterium)
Gene: BAA_A0168, BXA0164, GBAA_pXO1_0164, pag, pagA, pXO1-110
Plasmid: pQE80 / Production host: Escherichia coli (E. coli) / References: UniProt: P13423
#2: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca

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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: 2.31 Å3/Da / Density % sol: 46.67 %
Crystal growTemperature: 293 K / Method: vapor diffusion / pH: 5.5
Details: 25 %(w/v) PEG 1500, 100 mM SPG Buffer, pH 5.5, vapor diffusion, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 17-ID / Wavelength: 1 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Jan 1, 2010
RadiationProtocol: SINGLE WAVELENGTH / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 3.129→114.877 Å / Num. all: 14065 / Num. obs: 14065 / % possible obs: 99.7 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 6.2 % / Rsym value: 0.109 / Net I/σ(I): 11.3
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsNum. measured allNum. unique allRsym value% possible all
3.13-3.36.80.4771.61365520200.47799.8
3.3-3.56.50.3152.51252719140.31599.9
3.5-3.746.40.2083.71144417930.20899.8
3.74-4.046.10.1564.91018416640.15699.7
4.04-4.435.80.1116.6899515540.11199.6
4.43-4.955.40.0918755514080.09199.3
4.95-5.715.90.0848.4744212520.08499.7
5.71-760.0719.7651110780.07199.8
7-9.896.70.0491357718630.04999.9
9.89-114.8775.90.04314.130505190.04399.1

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Processing

Software
NameVersionClassificationNB
MOSFLMdata reduction
SCALA3.3.16data scaling
PHENIX1.6.4_486refinement
PDB_EXTRACT3.1data extraction
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB entry 3MHZ

3mhz


Resolution: 3.129→56.538 Å / Occupancy max: 1 / Occupancy min: 0.5 / SU ML: 0.36 / σ(F): 1.35 / Phase error: 29.13 / Stereochemistry target values: ML
RfactorNum. reflection% reflectionSelection details
Rfree0.2792 696 4.97 %RANDOM
Rwork0.2355 ---
obs0.2378 14001 99.54 %-
Solvent computationShrinkage radii: 0.17 Å / VDW probe radii: 0.4 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 49.254 Å2 / ksol: 0.373 e/Å3
Displacement parametersBiso max: 133.95 Å2 / Biso mean: 75.756 Å2 / Biso min: 41.24 Å2
Baniso -1Baniso -2Baniso -3
1--7.2601 Å2-0 Å20 Å2
2---12.1921 Å2-0 Å2
3---19.4522 Å2
Refinement stepCycle: LAST / Resolution: 3.129→56.538 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5265 0 2 0 5267
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0075364
X-RAY DIFFRACTIONf_angle_d1.0927283
X-RAY DIFFRACTIONf_chiral_restr0.057838
X-RAY DIFFRACTIONf_plane_restr0.005948
X-RAY DIFFRACTIONf_dihedral_angle_d14.2611975
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Total num. of bins used: 5

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
3.129-3.37060.34851260.279326462772100
3.3706-3.70970.34491320.251926062738100
3.7097-4.24640.30121270.23352645277299
4.2464-5.34930.2571660.21372617278399
5.3493-56.54750.24581450.232727912936100

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