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- PDB-2xwo: SiaP R147E mutant in complex with sialylamide -

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Basic information

Entry
Database: PDB / ID: 2xwo
TitleSiaP R147E mutant in complex with sialylamide
ComponentsSIALIC ACID-BINDING PERIPLASMIC PROTEIN SIAP
KeywordsTRANSPORT PROTEIN / TRAP / SUGAR TRANSPORT
Function / homology
Function and homology information


: / transmembrane transport / outer membrane-bounded periplasmic space
Similarity search - Function
TRAP transporter solute receptor, DctP family / Bacterial extracellular solute-binding protein, family 7 / TRAP transporter solute receptor DctP / TRAP transporter solute receptor DctP superfamily / Bacterial extracellular solute-binding protein, family 7 / D-Maltodextrin-Binding Protein; domain 2 / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Chem-SLM / Sialic acid-binding periplasmic protein SiaP
Similarity search - Component
Biological speciesHAEMOPHILUS INFLUENZAE (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.54 Å
AuthorsFischer, M. / Hubbard, R.E.
CitationJournal: J.Biol.Chem. / Year: 2015
Title: Tripartite ATP-Independent Periplasmic (Trap) Transporters Use an Arginine-Mediated Selectivity Filter for High Affinity Substrate Binding.
Authors: Fischer, M. / Hopkins, A.P. / Severi, E. / Hawkhead, J. / Bawdon, D. / Watts, A.G. / Hubbard, R.E. / Thomas, G.H.
History
DepositionNov 4, 2010Deposition site: PDBE / Processing site: PDBE
Revision 1.0Nov 16, 2011Provider: repository / Type: Initial release
Revision 1.1Sep 16, 2015Group: Database references
Revision 1.2Sep 23, 2015Group: Database references
Revision 1.3Nov 18, 2015Group: Database references
Revision 1.4Mar 6, 2019Group: Data collection / Experimental preparation / Other
Category: exptl_crystal_grow / pdbx_database_proc / pdbx_database_status
Item: _exptl_crystal_grow.temp / _pdbx_database_status.recvd_author_approval
Revision 1.5Jul 29, 2020Group: Derived calculations / Other / Structure summary
Category: chem_comp / entity ...chem_comp / entity / pdbx_database_status / pdbx_entity_nonpoly / struct_site / struct_site_gen
Item: _chem_comp.name / _chem_comp.type ..._chem_comp.name / _chem_comp.type / _entity.pdbx_description / _pdbx_database_status.status_code_sf / _pdbx_entity_nonpoly.name
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 1.6Dec 20, 2023Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: SIALIC ACID-BINDING PERIPLASMIC PROTEIN SIAP
hetero molecules


Theoretical massNumber of molelcules
Total (without water)35,3132
Polymers35,0051
Non-polymers3081
Water7,008389
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)47.860, 74.760, 87.170
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein SIALIC ACID-BINDING PERIPLASMIC PROTEIN SIAP / EXTRACYTOPLASMIC SOLUTE RECEPTOR PROTEIN SIAP / N-ACETYLNEURAMINIC-BINDING PROTEIN / NEU5AC-BINDING ...EXTRACYTOPLASMIC SOLUTE RECEPTOR PROTEIN SIAP / N-ACETYLNEURAMINIC-BINDING PROTEIN / NEU5AC-BINDING PROTEIN / SUBSTRATE BINDING PROTEIN


Mass: 35004.539 Da / Num. of mol.: 1 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) HAEMOPHILUS INFLUENZAE (bacteria) / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21(DE3) / Variant (production host): PLYSS PAH16 / References: UniProt: P44542
#2: Sugar ChemComp-SLM / (2S,4S,5R,6R)-5-acetamido-2,4-dihydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxamide / SIALYLAMIDE


Type: D-saccharide, beta linking / Mass: 308.285 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C11H20N2O8
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 389 / Source method: isolated from a natural source / Formula: H2O
Compound detailsENGINEERED RESIDUE IN CHAIN A, ARG 170 TO GLU

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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: 2.2 Å3/Da / Density % sol: 45 % / Description: NONE
Crystal growTemperature: 277 K / pH: 7
Details: 35 MG/ML SIAP (IN 20 MM HEPES, 10 MM NACL, 20 MM SIALYLAMIDE, PH 8.0) WITH AN EQUIVOLUME OF RESERVOIR SOLUTION (100MM MES PH 6.0 28.5% PEG 6K, 2% (W/V) BENZAMIDINE HYDROCHLORIDE HYDRATE); TEMPERATURE 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID23-2 / Wavelength: 0.8726
DetectorType: ADSC CCD / Detector: CCD / Date: Oct 26, 2009
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.8726 Å / Relative weight: 1
ReflectionResolution: 1.54→29.06 Å / Num. obs: 47100 / % possible obs: 100 % / Observed criterion σ(I): 2.5 / Redundancy: 7.3 % / Biso Wilson estimate: 14.4 Å2 / Rmerge(I) obs: 0.12 / Net I/σ(I): 11.9
Reflection shellResolution: 1.54→1.62 Å / Redundancy: 7.3 % / Rmerge(I) obs: 0.97 / Mean I/σ(I) obs: 2.5 / % possible all: 100

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Processing

Software
NameVersionClassification
REFMAC5.5.0109refinement
MOSFLMdata reduction
SCALEPACKdata scaling
REFMACRIGID BODYphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2V4C
Resolution: 1.54→28.37 Å / Cor.coef. Fo:Fc: 0.976 / Cor.coef. Fo:Fc free: 0.962 / SU B: 2.911 / SU ML: 0.047 / Cross valid method: THROUGHOUT / ESU R: 0.081 / ESU R Free: 0.072 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. U VALUES REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.17891 2384 5.1 %RANDOM
Rwork0.13037 ---
obs0.13287 44650 100 %-
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: 14.015 Å2
Baniso -1Baniso -2Baniso -3
1--0.28 Å20 Å20 Å2
2---0.48 Å20 Å2
3---0.77 Å2
Refinement stepCycle: LAST / Resolution: 1.54→28.37 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2426 0 21 389 2836
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0170.0222584
X-RAY DIFFRACTIONr_bond_other_d0.0020.021728
X-RAY DIFFRACTIONr_angle_refined_deg1.5551.9743511
X-RAY DIFFRACTIONr_angle_other_deg1.0073.0024256
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.7035330
X-RAY DIFFRACTIONr_dihedral_angle_2_deg39.19626.23122
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.64815460
X-RAY DIFFRACTIONr_dihedral_angle_4_deg14.963154
X-RAY DIFFRACTIONr_chiral_restr0.1010.2387
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.0212914
X-RAY DIFFRACTIONr_gen_planes_other0.0010.02490
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_it1.5251.51592
X-RAY DIFFRACTIONr_mcbond_other0.5581.5637
X-RAY DIFFRACTIONr_mcangle_it2.31622569
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it3.7783992
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it5.4694.5937
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr1.56534312
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.54→1.58 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.275 178 -
Rwork0.207 3235 -
obs--99.97 %

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