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- PDB-4wcf: Trypanosoma brucei PTR1 in complex with inhibitor 9 -

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Basic information

Entry
Database: PDB / ID: 4wcf
TitleTrypanosoma brucei PTR1 in complex with inhibitor 9
Components(Pteridine reductase) x 3
KeywordsOXIDOREDUCTASE
Function / homology
Function and homology information


pteridine reductase activity / nucleotide binding
Similarity search - Function
Pteridine reductase / Short-chain dehydrogenase/reductase, conserved site / Short-chain dehydrogenases/reductases family signature. / Enoyl-(Acyl carrier protein) reductase / Short-chain dehydrogenase/reductase SDR / NAD(P)-binding Rossmann-like Domain / NAD(P)-binding domain superfamily / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
3-(5-amino-1,3,4-thiadiazol-2-yl)pyridin-4-amine / ACETATE ION / NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / Pteridine reductase
Similarity search - Component
Biological speciesTrypanosoma brucei brucei (eukaryote)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.93 Å
AuthorsMangani, S. / Di Pisa, F. / Pozzi, C.
Funding support Italy, 1items
OrganizationGrant numberCountry
European Union Seventh Framework Programme (FP7/2007-2013)603240 Italy
CitationJournal: ACS Omega / Year: 2017
Title: Exploiting the 2-Amino-1,3,4-thiadiazole Scaffold To Inhibit Trypanosoma brucei Pteridine Reductase in Support of Early-Stage Drug Discovery.
Authors: Linciano, P. / Dawson, A. / Pohner, I. / Costa, D.M. / Sa, M.S. / Cordeiro-da-Silva, A. / Luciani, R. / Gul, S. / Witt, G. / Ellinger, B. / Kuzikov, M. / Gribbon, P. / Reinshagen, J. / Wolf, ...Authors: Linciano, P. / Dawson, A. / Pohner, I. / Costa, D.M. / Sa, M.S. / Cordeiro-da-Silva, A. / Luciani, R. / Gul, S. / Witt, G. / Ellinger, B. / Kuzikov, M. / Gribbon, P. / Reinshagen, J. / Wolf, M. / Behrens, B. / Hannaert, V. / Michels, P.A.M. / Nerini, E. / Pozzi, C. / di Pisa, F. / Landi, G. / Santarem, N. / Ferrari, S. / Saxena, P. / Lazzari, S. / Cannazza, G. / Freitas-Junior, L.H. / Moraes, C.B. / Pascoalino, B.S. / Alcantara, L.M. / Bertolacini, C.P. / Fontana, V. / Wittig, U. / Muller, W. / Wade, R.C. / Hunter, W.N. / Mangani, S. / Costantino, L. / Costi, M.P.
History
DepositionSep 4, 2014Deposition site: RCSB / Processing site: PDBE
Revision 1.0Sep 23, 2015Provider: repository / Type: Initial release
Revision 1.1Sep 27, 2017Group: Database references / Structure summary / Category: audit_author / citation / citation_author
Item: _audit_author.identifier_ORCID / _citation.country ..._audit_author.identifier_ORCID / _citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.title / _citation.year
Revision 1.2Oct 18, 2017Group: Database references / Refinement description / Category: citation / citation_author / refine
Item: _citation.journal_abbrev / _citation.pdbx_database_id_PubMed ..._citation.journal_abbrev / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name / _refine.ls_d_res_low
Revision 1.3Jan 10, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / refine_hist
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _refine_hist.d_res_low

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Pteridine reductase
B: Pteridine reductase
C: Pteridine reductase
D: Pteridine reductase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)118,25116
Polymers114,2024
Non-polymers4,04912
Water7,819434
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area20600 Å2
ΔGint-130 kcal/mol
Surface area30960 Å2
MethodPISA
Unit cell
Length a, b, c (Å)74.728, 90.206, 82.779
Angle α, β, γ (deg.)90.00, 115.74, 90.00
Int Tables number4
Space group name H-MP1211

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Components

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Protein , 3 types, 4 molecules ADBC

#1: Protein Pteridine reductase


Mass: 28530.441 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Trypanosoma brucei brucei (eukaryote) / Gene: PTR1 / Plasmid: pET15b / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: O76290
#2: Protein Pteridine reductase


Mass: 28578.438 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Trypanosoma brucei brucei (eukaryote) / Gene: PTR1 / Plasmid: pET15b / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: O76290
#3: Protein Pteridine reductase


Mass: 28562.438 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Trypanosoma brucei brucei (eukaryote) / Gene: PTR1 / Plasmid: pET15b / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: O76290

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Non-polymers , 5 types, 446 molecules

#4: Chemical
ChemComp-NAP / NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / 2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE


Mass: 743.405 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C21H28N7O17P3
#5: Chemical
ChemComp-3KN / 3-(5-amino-1,3,4-thiadiazol-2-yl)pyridin-4-amine


Mass: 193.229 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C7H7N5S
#6: Chemical ChemComp-ACT / ACETATE ION


Mass: 59.044 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H3O2
#7: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C3H8O3
#8: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 434 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.2 Å3/Da / Density % sol: 44.11 %
Crystal growTemperature: 298 K / Method: vapor diffusion, sitting drop / pH: 7.5
Details: 0.1 M SODIUM CITRATE PH 5, 1.5-2.5 M SODIUM ACETATE, 0.01 M DTT.

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: BM30A / Wavelength: 0.97968 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Apr 14, 2014
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97968 Å / Relative weight: 1
ReflectionResolution: 1.93→45.1 Å / Num. obs: 74387 / % possible obs: 100 % / Observed criterion σ(I): 2 / Redundancy: 3.6 % / Rmerge(I) obs: 0.066 / Net I/σ(I): 12.4
Reflection shellResolution: 1.93→2.03 Å / Redundancy: 3.6 % / Rmerge(I) obs: 0.422 / Mean I/σ(I) obs: 3.1 / % possible all: 100

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Processing

Software
NameVersionClassification
XDSdata reduction
SCALAdata scaling
MOLREPphasing
REFMAC5.8.0069refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2X9G

2x9g


Resolution: 1.93→45.1 Å / Cor.coef. Fo:Fc: 0.955 / Cor.coef. Fo:Fc free: 0.937 / SU B: 4.959 / SU ML: 0.133 / Cross valid method: THROUGHOUT / ESU R: 0.174 / ESU R Free: 0.153 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.23158 3682 5 %RANDOM
Rwork0.19356 ---
obs0.19545 70679 99.96 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 28.43 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å2-0.01 Å2
2--0.01 Å20 Å2
3----0 Å2
Refinement stepCycle: 1 / Resolution: 1.93→45.1 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7295 0 264 434 7993
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0150.0197732
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.7162.00610561
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.9965998
X-RAY DIFFRACTIONr_dihedral_angle_2_deg33.90124.246285
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.213151169
X-RAY DIFFRACTIONr_dihedral_angle_4_deg13.821544
X-RAY DIFFRACTIONr_chiral_restr0.0950.21264
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.0215712
X-RAY DIFFRACTIONr_gen_planes_other
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_it2.042.6943976
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it3.1194.0114948
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it2.7352.9683756
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined6.06423.59712768
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.93→1.98 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.361 256 -
Rwork0.373 5228 -
obs--100 %

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