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- PDB-3img: Crystal Structure of Mycobacterium Tuberculosis Pantothenate Synt... -

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Basic information

Entry
Database: PDB / ID: 3img
TitleCrystal Structure of Mycobacterium Tuberculosis Pantothenate Synthetase at 1.8 Ang resolution in a ternary complex with fragment compounds 5-methoxyindole and 1-benzofuran-2-carboxylic acid
ComponentsPantothenate synthetase
KeywordsLIGASE / Mycobacterium tuberculosis / pantothenate biosynthesis / enzymes / drug design / fragment-based / ATP-binding / Magnesium / Metal-binding / Nucleotide-binding
Function / homology
Function and homology information


beta-alanine metabolic process / pantoate-beta-alanine ligase (AMP-forming) / pantoate-beta-alanine ligase activity / pantothenate biosynthetic process / manganese ion binding / magnesium ion binding / ATP binding / metal ion binding / cytosol / cytoplasm
Similarity search - Function
Pantoate-beta-alanine ligase, C-terminal domain / Pantoate-beta-alanine ligase / Pantoate-beta-alanine ligase, C-terminal domain / Pantoate-beta-alanine ligase / Pantoate--beta-alanine Ligase; Chain: A,domain 2 / HUPs / Rossmann-like alpha/beta/alpha sandwich fold / Rossmann fold / 2-Layer Sandwich / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
1-benzofuran-2-carboxylic acid / 5-methoxy-1H-indole / ETHANOL / Pantothenate synthetase / Pantothenate synthetase
Similarity search - Component
Biological speciesMycobacterium tuberculosis (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.8 Å
AuthorsCiulli, A. / Hung, A.W. / Silvestre, H.L. / Wen, S. / Blundell, T.L. / Abell, C.
CitationJournal: Angew.Chem.Int.Ed.Engl. / Year: 2009
Title: Application of fragment growing and fragment linking to the discovery of inhibitors of Mycobacterium tuberculosis pantothenate synthetase.
Authors: Hung, A.W. / Silvestre, H.L. / Wen, S. / Ciulli, A. / Blundell, T.L. / Abell, C.
History
DepositionAug 10, 2009Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 13, 2009Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.2Nov 1, 2017Group: Refinement description / Category: software
Revision 1.3Oct 13, 2021Group: Database references / Derived calculations / Category: database_2 / 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 / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Sep 6, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Pantothenate synthetase
B: Pantothenate synthetase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)64,23312
Polymers63,1422
Non-polymers1,09110
Water6,882382
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
A: Pantothenate synthetase
hetero molecules

B: Pantothenate synthetase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)64,23312
Polymers63,1422
Non-polymers1,09110
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation1_554x,y,z-11
Buried area2640 Å2
ΔGint-62 kcal/mol
Surface area24060 Å2
MethodPISA
Unit cell
Length a, b, c (Å)48.480, 71.220, 81.800
Angle α, β, γ (deg.)90.00, 99.40, 90.00
Int Tables number4
Space group name H-MP1211

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Components

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Protein , 1 types, 2 molecules AB

#1: Protein Pantothenate synthetase / PS / Pantoate-beta-alanine ligase / Pantoate-activating enzyme


Mass: 31571.178 Da / Num. of mol.: 2 / Fragment: UNP residues 1-300 / Mutation: T2A, E77G
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mycobacterium tuberculosis (bacteria) / Gene: MT3707, MTCY07H7B.20, panC, Rv3602c / Plasmid: pET30a / Production host: Escherichia coli (E. coli) / Strain (production host): C41(DE3)
References: UniProt: P0A5R0, UniProt: P9WIL5*PLUS, pantoate-beta-alanine ligase (AMP-forming)

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Non-polymers , 6 types, 392 molecules

#2: Chemical ChemComp-BZ2 / 1-benzofuran-2-carboxylic acid


Mass: 162.142 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C9H6O3
#3: Chemical ChemComp-BZ3 / 5-methoxy-1H-indole


Mass: 147.174 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C9H9NO
#4: Chemical ChemComp-SO4 / SULFATE ION / Sulfate


Mass: 96.063 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: SO4
#5: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL / Glycerol


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#6: Chemical ChemComp-EOH / ETHANOL / Ethanol


Mass: 46.068 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H6O
#7: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 382 / 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: 2.21 Å3/Da / Density % sol: 44.25 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 8
Details: 11-14% w/v PEG3000, 100-150 mM lithium sulfate, 100 mM imidazole, pH 8.0, 2-4% v/v ethanol, 10% v/v glycerol and 20 mM magnesium chloride., VAPOR DIFFUSION, HANGING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID29 / Wavelength: 0.9788 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Oct 30, 2008
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9788 Å / Relative weight: 1
ReflectionResolution: 1.8→50 Å / Num. all: 50986 / Num. obs: 50816 / % possible obs: 99.7 % / Redundancy: 4.1 % / Biso Wilson estimate: 29.5 Å2 / Rmerge(I) obs: 0.061 / Rsym value: 0.061 / Net I/σ(I): 16.6
Reflection shellResolution: 1.8→1.91 Å / Redundancy: 4.1 % / Rmerge(I) obs: 0.529 / Mean I/σ(I) obs: 2.76 / Num. unique all: 8124 / Rsym value: 0.529 / % possible all: 99.4

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Processing

Software
NameVersionClassification
ADSCQuantumdata collection
AMoREphasing
REFMAC5.2.0019refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB entry 3COV

3cov


Resolution: 1.8→38.49 Å / Cor.coef. Fo:Fc: 0.966 / Cor.coef. Fo:Fc free: 0.95 / SU B: 2.669 / SU ML: 0.083
Isotropic thermal model: individual isotropic temperature factors
Cross valid method: THROUGHOUT / ESU R: 0.12 / ESU R Free: 0.118 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.20909 2543 5 %RANDOM
Rwork0.16773 ---
all0.16978 48410 --
obs0.16978 48270 99.71 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 27.439 Å2
Baniso -1Baniso -2Baniso -3
1--0 Å20 Å2-0 Å2
2--0 Å20 Å2
3----0 Å2
Refinement stepCycle: LAST / Resolution: 1.8→38.49 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4126 0 73 382 4581
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0140.0224281
X-RAY DIFFRACTIONr_angle_refined_deg1.4012.0045845
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.675559
X-RAY DIFFRACTIONr_dihedral_angle_2_deg37.14722.47166
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.22315634
X-RAY DIFFRACTIONr_dihedral_angle_4_deg15.1131544
X-RAY DIFFRACTIONr_chiral_restr0.0940.2693
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.023260
X-RAY DIFFRACTIONr_nbd_refined0.2090.22006
X-RAY DIFFRACTIONr_nbtor_refined0.3070.22967
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.150.2341
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1690.289
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.0960.223
X-RAY DIFFRACTIONr_mcbond_it2.81552860
X-RAY DIFFRACTIONr_mcangle_it3.72864469
X-RAY DIFFRACTIONr_scbond_it3.5551572
X-RAY DIFFRACTIONr_scangle_it5.40671375
LS refinement shellResolution: 1.8→1.847 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.273 192 -
Rwork0.233 3487 -
obs-3487 98.9 %

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