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- PDB-6phw: SpAga D472N structure in complex with melibiose -

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Basic information

Entry
Database: PDB / ID: 6phw
TitleSpAga D472N structure in complex with melibiose
ComponentsAlpha-galactosidase
KeywordsHYDROLASE / (alpha/beta)8 barrel / glycoside hydrolase
Function / homology
Function and homology information


alpha-galactosidase / alpha-galactosidase activity / carbohydrate catabolic process
Similarity search - Function
alpha-galactosidase from lactobacil brevis / Glycosyl hydrolase family 36, N-terminal / Glycosyl hydrolase family 36, C-terminal / Alpha-galactosidase, N-terminal domain superfamily / Glycosyl hydrolase family 36 C-terminal domain / Glycosyl hydrolase family 36 N-terminal domain / Glycoside hydrolase family 36 / Melibiase / : / Glycoside hydrolase family 27/36, conserved site ...alpha-galactosidase from lactobacil brevis / Glycosyl hydrolase family 36, N-terminal / Glycosyl hydrolase family 36, C-terminal / Alpha-galactosidase, N-terminal domain superfamily / Glycosyl hydrolase family 36 C-terminal domain / Glycosyl hydrolase family 36 N-terminal domain / Glycoside hydrolase family 36 / Melibiase / : / Glycoside hydrolase family 27/36, conserved site / Alpha-galactosidase signature. / Beta-galactosidase; Chain A, domain 5 / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta / Distorted Sandwich / Aldolase class I / Aldolase-type TIM barrel / Glycoside hydrolase superfamily / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
alpha-melibiose / L(+)-TARTARIC ACID / Alpha-galactosidase
Similarity search - Component
Biological speciesStreptococcus pneumoniae serotype 4 (bacteria)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 2.2 Å
AuthorsPluvinage, B. / Boraston, A.B.
Funding support Canada, 1items
OrganizationGrant numberCountry
Canadian Institutes of Health Research (CIHR) Canada
CitationJournal: J.Biol.Chem. / Year: 2019
Title: Molecular analysis of an enigmaticStreptococcus pneumoniaevirulence factor: The raffinose-family oligosaccharide utilization system.
Authors: Hobbs, J.K. / Meier, E.P.W. / Pluvinage, B. / Mey, M.A. / Boraston, A.B.
History
DepositionJun 25, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 2, 2019Provider: repository / Type: Initial release
Revision 1.1Oct 23, 2019Group: Data collection / Database references / Category: citation
Item: _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Nov 27, 2019Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.title
Revision 1.3Jan 8, 2020Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 2.0Jul 29, 2020Group: Atomic model / Author supporting evidence ...Atomic model / Author supporting evidence / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / entity_name_com / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_instance_feature / pdbx_entity_nonpoly / pdbx_molecule_features / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_struct_special_symmetry / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _chem_comp.name / _chem_comp.type / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_struct_special_symmetry.label_asym_id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_value_order / _struct_conn.ptnr1_auth_asym_id / _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.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
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Oct 11, 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

Downloads & links

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Assembly

Deposited unit
A: Alpha-galactosidase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)85,16813
Polymers83,9671
Non-polymers1,20112
Water9,026501
1
A: Alpha-galactosidase
hetero molecules

A: Alpha-galactosidase
hetero molecules

A: Alpha-galactosidase
hetero molecules

A: Alpha-galactosidase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)340,67352
Polymers335,8694
Non-polymers4,80448
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_545-x,-y-1,z1
crystal symmetry operation3_555-x,y,-z1
crystal symmetry operation4_545x,-y-1,-z1
Buried area36440 Å2
ΔGint81 kcal/mol
Surface area83140 Å2
MethodPISA
Unit cell
Length a, b, c (Å)90.909, 127.193, 151.530
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number23
Space group name H-MI222
Components on special symmetry positions
IDModelComponents
11A-1113-

HOH

21A-1329-

HOH

31A-1339-

HOH

41A-1384-

HOH

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Components

#1: Protein Alpha-galactosidase


Mass: 83967.188 Da / Num. of mol.: 1 / Mutation: D472N
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4) (bacteria)
Strain: ATCC BAA-334 / TIGR4 / Gene: aga, SP_1898 / Plasmid: pET28a / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: A0A0H2URQ6, alpha-galactosidase
#2: Polysaccharide alpha-D-galactopyranose-(1-6)-alpha-D-glucopyranose / alpha-melibiose


Type: oligosaccharide, Oligosaccharide / Class: Metabolism / Mass: 342.297 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-melibiose
DescriptorTypeProgram
DGalpa1-6DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1a_1-5][a2112h-1a_1-5]/1-2/a6-b1WURCSPDB2Glycan 1.1.0
[][a-D-Glcp]{[(6+1)][a-D-Galp]{}}LINUCSPDB-CARE
#3: Chemical ChemComp-TLA / L(+)-TARTARIC ACID


Mass: 150.087 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C4H6O6
#4: Chemical
ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: C2H6O2
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 501 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY

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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: 2.61 Å3/Da / Density % sol: 52.84 %
Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop / pH: 4.6
Details: 0.1 M sodium acetate:acetic acid, 0.7-1.0 M ammonium tartrate dibasic

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU MICROMAX-002 / Wavelength: 1.5419 Å
DetectorType: DECTRIS PILATUS 200K / Detector: PIXEL / Date: May 29, 2018
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5419 Å / Relative weight: 1
ReflectionResolution: 2.2→25 Å / Num. obs: 44415 / % possible obs: 99.4 % / Redundancy: 4.5 % / CC1/2: 0.991 / Rmerge(I) obs: 0.134 / Rpim(I) all: 0.069 / Net I/σ(I): 10.6
Reflection shellResolution: 2.2→2.24 Å / Redundancy: 4.2 % / Rmerge(I) obs: 0.346 / Mean I/σ(I) obs: 3.5 / Num. unique obs: 3732 / CC1/2: 0.881 / Rpim(I) all: 0.184 / % possible all: 99.8

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Phasing

PhasingMethod: molecular replacement

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Processing

Software
NameVersionClassificationNB
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
REFMAC5.8.0238refinement
PDB_EXTRACT3.25data extraction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4PHU

4phu


Resolution: 2.2→24.75 Å / Cor.coef. Fo:Fc: 0.965 / Cor.coef. Fo:Fc free: 0.945 / SU B: 5.851 / SU ML: 0.145 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.242 / ESU R Free: 0.199 / Details: U VALUES : REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.2274 2286 5.2 %RANDOM
Rwork0.1734 ---
obs0.1762 41858 98.39 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å
Displacement parametersBiso max: 83.66 Å2 / Biso mean: 33.474 Å2 / Biso min: 20.25 Å2
Baniso -1Baniso -2Baniso -3
1-0.16 Å20 Å20 Å2
2---0.18 Å20 Å2
3---0.03 Å2
Refinement stepCycle: final / Resolution: 2.2→24.75 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5740 0 79 501 6320
Biso mean--46.17 36.1 -
Num. residues----721
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0060.0125942
X-RAY DIFFRACTIONr_angle_refined_deg1.4041.6428042
X-RAY DIFFRACTIONr_dihedral_angle_1_deg7.515722
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.37923.476328
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.24115993
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.3571530
X-RAY DIFFRACTIONr_chiral_restr0.1020.2761
X-RAY DIFFRACTIONr_gen_planes_refined0.0070.024565
LS refinement shellResolution: 2.201→2.258 Å / Rfactor Rfree error: 0 / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.313 177 -
Rwork0.241 2973 -
all-3150 -
obs--96.18 %

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