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- PDB-3nzd: Structural Analysis of Pneumocystis carinii and Human DHFR Comple... -

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Basic information

Entry
Database: PDB / ID: 3nzd
TitleStructural Analysis of Pneumocystis carinii and Human DHFR Complexes with NADPH and a Series of Five 5-(omega-carboxy(alkyloxy(pyrido[2,3-d]pyrimidine Derivatives
ComponentsDihydrofolate reductase
KeywordsOXIDOREDUCTASE/OXIDOREDUCTASE INHIBITOR / human DHFR inhibitor complexes / OXIDOREDUCTASE / OXIDOREDUCTASE-OXIDOREDUCTASE INHIBITOR complex
Function / homology
Function and homology information


regulation of removal of superoxide radicals / tetrahydrobiopterin biosynthetic process / Metabolism of folate and pterines / tetrahydrofolate metabolic process / response to methotrexate / sequence-specific mRNA binding / folic acid binding / axon regeneration / dihydrofolate metabolic process / G1/S-Specific Transcription ...regulation of removal of superoxide radicals / tetrahydrobiopterin biosynthetic process / Metabolism of folate and pterines / tetrahydrofolate metabolic process / response to methotrexate / sequence-specific mRNA binding / folic acid binding / axon regeneration / dihydrofolate metabolic process / G1/S-Specific Transcription / dihydrofolate reductase / dihydrofolate reductase activity / folic acid metabolic process / NADPH binding / tetrahydrofolate biosynthetic process / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / one-carbon metabolic process / mRNA regulatory element binding translation repressor activity / NADP binding / negative regulation of translation / mRNA binding / mitochondrion / cytosol
Similarity search - Function
Dihydrofolate reductase / Dihydrofolate Reductase, subunit A / Dihydrofolate Reductase, subunit A / Dihydrofolate reductase conserved site / Dihydrofolate reductase (DHFR) domain signature. / Dihydrofolate reductase (DHFR) domain profile. / Dihydrofolate reductase domain / Dihydrofolate reductase / Dihydrofolate reductase-like domain superfamily / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Chem-D2Q / Chem-NDP / Dihydrofolate reductase
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.8 Å
AuthorsCody, V.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2011
Title: Structural analysis of Pneumocystis carinii and human DHFR complexes with NADPH and a series of five potent 6-[5'-([omega]-carboxyalkoxy)benzyl]pyrido[2,3-d]pyrimidine derivatives
Authors: Cody, V. / Pace, J.
History
DepositionJul 16, 2010Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 29, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Nov 8, 2017Group: Refinement description / Category: software
Revision 1.3Sep 6, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Dihydrofolate reductase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)22,5343
Polymers21,3501
Non-polymers1,1852
Water4,702261
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)84.622, 84.622, 77.597
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number146
Space group name H-MH3
Components on special symmetry positions
IDModelComponents
11A-407-

HOH

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Components

#1: Protein Dihydrofolate reductase


Mass: 21349.525 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: DHFR, DHFRP1 / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: P00374, dihydrofolate reductase
#2: Chemical ChemComp-D2Q / ethyl 5-{2-[(2,4-diamino-5-methylpyrido[2,3-d]pyrimidin-6-yl)methyl]-4-methoxyphenoxy}pentanoate


Mass: 439.507 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C23H29N5O4
#3: Chemical ChemComp-NDP / NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE


Mass: 745.421 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H30N7O17P3
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 261 / 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: 2.5 Å3/Da / Density % sol: 50.89 %
Crystal growTemperature: 287 K / Method: vapor diffusion, hanging drop / pH: 6.9
Details: 100 mM KPO4, 30% saturated ammonium sulfate, 3% v/v ethanol, pH 6.9, VAPOR DIFFUSION, HANGING DROP, temperature 287K

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Data collection

DiffractionMean temperature: 200 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-2 / Wavelength: 0.975 Å
DetectorType: MARMOSAIC 325 mm CCD / Detector: CCD / Date: Jan 1, 2008 / Details: mirrors
RadiationMonochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.975 Å / Relative weight: 1
ReflectionResolution: 1.8→53.3 Å / Num. all: 23216 / Num. obs: 18315 / % possible obs: 95.3 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2 / Redundancy: 3.7 % / Biso Wilson estimate: 28.4 Å2 / Rmerge(I) obs: 0.062 / Rsym value: 0.073 / Net I/σ(I): 15
Reflection shellResolution: 1.8→1.9 Å / Redundancy: 3.2 % / Rmerge(I) obs: 0.342 / Mean I/σ(I) obs: 3.3 / Num. unique all: 2090 / Rsym value: 0.404 / % possible all: 74.2

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Processing

Software
NameVersionClassification
HKL-2000data collection
MOLREPphasing
REFMAC5.5.0088refinement
MOSFLMdata reduction
SCALAdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB entry 1u72

1u72


Resolution: 1.8→53.3 Å / Cor.coef. Fo:Fc: 0.959 / Cor.coef. Fo:Fc free: 0.919 / SU B: 2.62 / SU ML: 0.083 / Isotropic thermal model: isotropic / Cross valid method: THROUGHOUT / σ(F): 2 / σ(I): 2 / ESU R Free: 0.142 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.23163 947 5.2 %RANDOM
Rwork0.1634 ---
obs0.16674 17366 95.27 %-
all-23216 --
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 19.949 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refinement stepCycle: LAST / Resolution: 1.8→53.3 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1502 0 80 261 1843
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0250.0221657
X-RAY DIFFRACTIONr_angle_refined_deg2.2312.0432253
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.4915191
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.46824.93273
X-RAY DIFFRACTIONr_dihedral_angle_3_deg15.40215290
X-RAY DIFFRACTIONr_dihedral_angle_4_deg13.519158
X-RAY DIFFRACTIONr_chiral_restr0.3290.2236
X-RAY DIFFRACTIONr_gen_planes_refined0.0120.0211241
X-RAY DIFFRACTIONr_mcbond_it1.2381.5947
X-RAY DIFFRACTIONr_mcangle_it2.13321542
X-RAY DIFFRACTIONr_scbond_it3.3843710
X-RAY DIFFRACTIONr_scangle_it5.1584.5711
LS refinement shellResolution: 1.8→1.847 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.333 51 -
Rwork0.237 946 -
obs--69.38 %

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