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- PDB-1n2g: Crystal Structure of a Pantothenate Synthetase from M. tuberculos... -

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Basic information

Entry
Database: PDB / ID: 1n2g
TitleCrystal Structure of a Pantothenate Synthetase from M. tuberculosis in complex with AMPCPP
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 / cytoplasm / cytosol
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
DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER / ETHANOL / Pantothenate synthetase / Pantothenate synthetase
Similarity search - Component
Biological speciesMycobacterium tuberculosis (bacteria)
MethodX-RAY DIFFRACTION / rigid body refinement into new data / Resolution: 1.8 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 22, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 22, 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 / pdbx_struct_conn_angle ...database_2 / pdbx_struct_conn_angle / struct_conn / 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.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.value / _struct_conn.pdbx_dist_value / _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.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_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
Remark 999 SEQUENCE RESIDUE 2 IS AN ALANINE IN THE SEQUENCE. MUTATION OF THIS RESIDUE WAS NECESSARY TO ... SEQUENCE RESIDUE 2 IS AN ALANINE IN THE SEQUENCE. MUTATION OF THIS RESIDUE WAS NECESSARY TO GENERATE AN NCOI RESTRICTION SITE FOR CLONING INTO THE EXPRESSION VECTOR PET30A. THE LAST 9 RESIDUES AFTER ARG300 WERE CLEAVED OFF BY ENTEROKINASE DIGESTION (UNINTENTIONALLY), WHICH WAS CARRIED OUT TO CLEAVE THE N-TERMINAL TAG FROM THE RECOMBINANT PROTEIN.

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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)64,89617
Polymers63,0002
Non-polymers1,89615
Water5,495305
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)48.308, 70.913, 81.875
Angle α, β, γ (deg.)90.00, 99.31, 90.00
Int Tables number4
Space group name H-MP1211
DetailsThe biological assembly is a dimer

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Components

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Protein , 1 types, 2 molecules AB

#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)

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Non-polymers , 6 types, 320 molecules

#2: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: SO4
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-APC / DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER / ALPHA,BETA-METHYLENEADENOSINE-5'-TRIPHOSPHATE


Mass: 505.208 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C11H18N5O12P3 / Comment: AMP-CPP, energy-carrying molecule analogue*YM
#5: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C3H8O3
#6: Chemical
ChemComp-EOH / ETHANOL


Mass: 46.068 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C2H6O
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 305 / 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: 2.2 Å3/Da / Density % sol: 43.97 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 8
Details: PEG3000, lithium sulfate, magnesium sulfate, imidazole, ethanol, glycerol, 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: May 4, 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: 1.8→50 Å / Num. all: 50403 / Num. obs: 50403 / % possible obs: 99.4 % / Observed criterion σ(I): -3 / Redundancy: 3.4 % / Biso Wilson estimate: 24.4 Å2 / Rmerge(I) obs: 0.059 / Rsym value: 0.059 / Net I/σ(I): 21.1
Reflection shellResolution: 1.8→1.86 Å / Redundancy: 3.2 % / Rmerge(I) obs: 0.471 / Mean I/σ(I) obs: 2.6 / Num. unique all: 5035 / Rsym value: 0.471 / % possible all: 99.8

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: rigid body refinement into new data
Starting model: PDB entry 1MOP

1mop


Resolution: 1.8→19.84 Å / Rfactor Rfree error: 0.003 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.223 4077 8.1 %RANDOM
Rwork0.192 ---
obs0.192 50270 99.2 %-
all-50270 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 49.0266 Å2 / ksol: 0.370081 e/Å3
Displacement parametersBiso mean: 30 Å2
Baniso -1Baniso -2Baniso -3
1-3.87 Å20 Å2-1.92 Å2
2--3.96 Å20 Å2
3----7.83 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.23 Å0.19 Å
Luzzati d res low-5 Å
Luzzati sigma a0.22 Å0.18 Å
Refinement stepCycle: LAST / Resolution: 1.8→19.84 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4226 0 116 305 4647
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.01
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_d23.3
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.95
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it2.261.5
X-RAY DIFFRACTIONc_mcangle_it3.062
X-RAY DIFFRACTIONc_scbond_it3.342
X-RAY DIFFRACTIONc_scangle_it4.572.5
Refine LS restraints NCSNCS model details: RESTRAIN
LS refinement shellResolution: 1.8→1.91 Å / Rfactor Rfree error: 0.011 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.304 714 8.5 %
Rwork0.278 7645 -
obs-8359 99.6 %
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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