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- PDB-1n2o: Crystal Structure of Pantothenate Synthetase from M. tuberculosis... -

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Basic information

Entry
Database: PDB / ID: 1n2o
TitleCrystal Structure of Pantothenate Synthetase from M. tuberculosis, low occupancy of beta-alanine at the pantoate binding sites
Componentspantothenate synthetase
KeywordsLIGASE / Structural genomics / Rossmann fold / dimer / intersubunit beta sheet / PSI / Protein Structure Initiative / TB Structural Genomics Consortium / TBSGC
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
BETA-ALANINE / Pantothenate synthetase / Pantothenate synthetase
Similarity search - Component
Biological speciesMycobacterium tuberculosis (bacteria)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.1 Å
AuthorsWang, S. / Eisenberg, D. / TB Structural Genomics Consortium (TBSGC)
CitationJournal: Protein Sci. / Year: 2003
Title: Crystal structures of a pantothenate synthetase from M. tuberculosis and its complexes with substrates and a reaction intermediate
Authors: Wang, S. / Eisenberg, D.
History
DepositionOct 23, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 23, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Oct 27, 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 1.4Feb 14, 2024Group: 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)63,3716
Polymers63,0002
Non-polymers3704
Water3,459192
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)69.747, 98.648, 82.102
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
DetailsThe biological assembly is a dimer

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Components

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


Mass: 31500.100 Da / Num. of mol.: 2 / Mutation: T2A, E77G
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mycobacterium tuberculosis (bacteria) / Gene: panC / Plasmid: pET30a / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3)
References: UniProt: P0A5R0, UniProt: P9WIL5*PLUS, pantoate-beta-alanine ligase (AMP-forming)
#2: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: SO4
#3: Chemical ChemComp-BAL / BETA-ALANINE


Type: peptide-like / Mass: 89.093 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C3H7NO2
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 192 / 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: 2.24 Å3/Da / Density % sol: 45.09 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 8
Details: PEG3000, magnesium chloride, imidazole, ethanol, beta-alanine, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU FR-D / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS IV++ / Detector: IMAGE PLATE / Date: Apr 15, 2002 / Details: mirrors
RadiationMonochromator: Ni filter / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.1→50 Å / Num. all: 33810 / Num. obs: 33810 / % possible obs: 99.9 % / Observed criterion σ(I): -3 / Redundancy: 7.7 % / Biso Wilson estimate: 21.5 Å2 / Rmerge(I) obs: 0.081 / Rsym value: 0.081 / Net I/σ(I): 25.3
Reflection shellResolution: 2.1→2.18 Å / Redundancy: 7.6 % / Rmerge(I) obs: 0.597 / Mean I/σ(I) obs: 3.9 / Num. unique all: 3318 / Rsym value: 0.597 / % possible all: 99.9

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS1.1refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB entry 1MOP

1mop


Resolution: 2.1→19.82 Å / Rfactor Rfree error: 0.005 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
Details: low occupancy of beta-alanine, but at the pantoate binding sites instead.
RfactorNum. reflection% reflectionSelection details
Rfree0.237 2710 8 %RANDOM
Rwork0.202 ---
obs0.202 33694 99.9 %-
all-33694 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 52.3857 Å2 / ksol: 0.372486 e/Å3
Displacement parametersBiso mean: 34.8 Å2
Baniso -1Baniso -2Baniso -3
1-2.25 Å20 Å20 Å2
2--8.18 Å20 Å2
3----10.43 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.29 Å0.23 Å
Luzzati d res low-5 Å
Luzzati sigma a0.24 Å0.19 Å
Refinement stepCycle: LAST / Resolution: 2.1→19.82 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4119 0 22 192 4333
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.012
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.5
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d23.7
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d1.08
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.961.5
X-RAY DIFFRACTIONc_mcangle_it2.82
X-RAY DIFFRACTIONc_scbond_it3.132
X-RAY DIFFRACTIONc_scangle_it4.242.5
Refine LS restraints NCSNCS model details: RESTRAIN
LS refinement shellResolution: 2.1→2.23 Å / Rfactor Rfree error: 0.014 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.295 449 8.1 %
Rwork0.245 5066 -
obs-5515 100 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER.PARAMWATER.TOP
X-RAY DIFFRACTION3LIGANDS_1.PARLIGANDS.TOP
X-RAY DIFFRACTION4ION.PARAMION.TOP

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