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- PDB-4lse: Ion selectivity of OmpF porin soaked in 0.2M NaBr -

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Basic information

Entry
Database: PDB / ID: 4lse
TitleIon selectivity of OmpF porin soaked in 0.2M NaBr
ComponentsOuter membrane protein F
KeywordsTRANSPORT PROTEIN / porin / outer membrane protein / beta-barrel / ion transport
Function / homology
Function and homology information


colicin transmembrane transporter activity / monoatomic ion channel complex / porin activity / pore complex / protein homotrimerization / monoatomic ion transmembrane transport / lipopolysaccharide binding / cell outer membrane / disordered domain specific binding / protein transport ...colicin transmembrane transporter activity / monoatomic ion channel complex / porin activity / pore complex / protein homotrimerization / monoatomic ion transmembrane transport / lipopolysaccharide binding / cell outer membrane / disordered domain specific binding / protein transport / monoatomic ion channel activity / lipid binding / identical protein binding / membrane
Similarity search - Function
Porin, gammaproteobacterial / Porin, Gram-negative type, conserved site / General diffusion Gram-negative porins signature. / Porin domain, Gram-negative type / Gram-negative porin / Porin, Gram-negative type / Porin / Porin domain superfamily / Porin / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
BROMIDE ION / DI(HYDROXYETHYL)ETHER / Outer membrane porin F
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.1 Å
AuthorsBalasundaresan, D. / Blachowicz, L. / Roux, B.
CitationJournal: J.Am.Chem.Soc. / Year: 2013
Title: A structural study of ion permeation in OmpF porin from anomalous X-ray diffraction and molecular dynamics simulations.
Authors: Dhakshnamoorthy, B. / Ziervogel, B.K. / Blachowicz, L. / Roux, B.
History
DepositionJul 22, 2013Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 23, 2013Provider: repository / Type: Initial release
Revision 1.1Jan 15, 2014Group: Database references
Revision 1.2Sep 20, 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_ncs_dom_lim / 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 / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_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_asym_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_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.beg_label_asym_id / _struct_ncs_dom_lim.beg_label_comp_id / _struct_ncs_dom_lim.beg_label_seq_id / _struct_ncs_dom_lim.end_auth_comp_id / _struct_ncs_dom_lim.end_label_asym_id / _struct_ncs_dom_lim.end_label_comp_id / _struct_ncs_dom_lim.end_label_seq_id / _struct_ref_seq_dif.details / _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

Downloads & links

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Assembly

Deposited unit
A: Outer membrane protein F
B: Outer membrane protein F
C: Outer membrane protein F
hetero molecules


Theoretical massNumber of molelcules
Total (without water)113,33623
Polymers111,5143
Non-polymers1,82220
Water11,151619
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area12440 Å2
ΔGint-81 kcal/mol
Surface area40320 Å2
MethodPISA
Unit cell
Length a, b, c (Å)76.697, 112.103, 131.169
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11A
21B
31C

NCS domain segments:

Component-ID: 1 / Ens-ID: 1 / Beg auth comp-ID: ALA / Beg label comp-ID: ALA / End auth comp-ID: PHE / End label comp-ID: PHE / Refine code: 1 / Auth seq-ID: 1 - 340 / Label seq-ID: 2 - 341

Dom-IDAuth asym-IDLabel asym-ID
1AA
2BB
3CC

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Components

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Protein , 1 types, 3 molecules ABC

#1: Protein Outer membrane protein F / Outer membrane protein 1A / Outer membrane protein B / Outer membrane protein IA / Porin OmpF


Mass: 37171.301 Da / Num. of mol.: 3 / Fragment: UNP residues 23-362
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Strain: K12 / Gene: b0929, cmlB, coa, cry, JW0912, ompF, tolF / Plasmid: PPR272 / Production host: Escherichia coli (E. coli) / Strain (production host): K12 / References: UniProt: P02931

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Non-polymers , 5 types, 639 molecules

#2: Chemical
ChemComp-BR / BROMIDE ION


Mass: 79.904 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Br
#3: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: Mg
#4: Chemical
ChemComp-PEG / DI(HYDROXYETHYL)ETHER


Mass: 106.120 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C4H10O3
#5: Chemical ChemComp-C8E / (HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE


Mass: 306.438 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C16H34O5 / Comment: C8E, detergent*YM
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 619 / 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: 2.53 Å3/Da / Density % sol: 51.35 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: 50% PEG200, 0.1 M sodium cacodylate, 0.2 M magnesium chloride, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 23-ID-D / Wavelength: 0.9199 Å
DetectorType: MARMOSAIC 300 mm CCD / Detector: CCD / Date: Aug 20, 2010
RadiationMonochromator: double crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9199 Å / Relative weight: 1
ReflectionResolution: 2.1→50 Å / Num. all: 66616 / Num. obs: 66615 / % possible obs: 94.9 % / Observed criterion σ(F): 1 / Observed criterion σ(I): 1 / Redundancy: 2.7 % / Biso Wilson estimate: 26.306 Å2 / Rmerge(I) obs: 0.109 / Net I/σ(I): 16.78
Reflection shellResolution: 2.1→2.14 Å / Redundancy: 2.7 % / Rmerge(I) obs: 0.457 / Mean I/σ(I) obs: 3.2 / % possible all: 93.9

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Processing

Software
NameVersionClassification
HKL-2000data collection
PHASERphasing
REFMAC5.5.0109refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2OMF

2omf


Resolution: 2.1→36.28 Å / Cor.coef. Fo:Fc: 0.921 / Cor.coef. Fo:Fc free: 0.866 / SU B: 7.671 / SU ML: 0.2 / Cross valid method: THROUGHOUT / σ(F): 2 / ESU R: 0.279 / ESU R Free: 0.234 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.28994 3269 5.1 %RANDOM
Rwork0.22865 ---
obs0.23178 61272 96.89 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 26.306 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refinement stepCycle: LAST / Resolution: 2.1→36.28 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7881 0 66 619 8566
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0160.0228095
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.6811.93510930
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.49151017
X-RAY DIFFRACTIONr_dihedral_angle_2_deg39.42825438
X-RAY DIFFRACTIONr_dihedral_angle_3_deg17.178151200
X-RAY DIFFRACTIONr_dihedral_angle_4_deg15.9561533
X-RAY DIFFRACTIONr_chiral_restr0.1210.21104
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.026474
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.8061.54968
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.46627842
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it2.07433127
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it3.3564.53088
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
Refine LS restraints NCS

Dom-ID: 1 / Ens-ID: 1 / Number: 2627 / Refine-ID: X-RAY DIFFRACTION

Auth asym-IDTypeRms dev position (Å)Weight position
Atight positional0.170.05
Btight positional0.160.05
Ctight positional0.180.05
Atight thermal0.350.5
Btight thermal0.310.5
Ctight thermal0.330.5
LS refinement shellResolution: 2.1→2.155 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.353 220 -
Rwork0.28 4284 -
obs--92.2 %

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