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- PDB-2fzj: New Insights into DHFR Interactions: Analysis of Pneumocystis car... -

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Basic information

Entry
Database: PDB / ID: 2fzj
TitleNew Insights into DHFR Interactions: Analysis of Pneumocystis carinii and Mouse DHFR Complexes with NADPH and Two Highly Potent Trimethoprim Derivatives
ComponentsDihydrofolate reductase
KeywordsOXIDOREDUCTASE / dihydrofolate reductase / trimethoprim derivatives / ring stacking interactions
Function / homology
Function and homology information


folate reductase activity / Metabolism of folate and pterines / oxidoreductase activity, acting on the CH-NH group of donors, NAD or NADP as acceptor / regulation of removal of superoxide radicals / tetrahydrobiopterin biosynthetic process / tetrahydrofolate metabolic process / response to methotrexate / tetrahydrofolate interconversion / dihydrofolate reductase / dihydrofolate reductase activity ...folate reductase activity / Metabolism of folate and pterines / oxidoreductase activity, acting on the CH-NH group of donors, NAD or NADP as acceptor / regulation of removal of superoxide radicals / tetrahydrobiopterin biosynthetic process / tetrahydrofolate metabolic process / response to methotrexate / tetrahydrofolate interconversion / dihydrofolate reductase / dihydrofolate reductase activity / tetrahydrofolate biosynthetic process / NADP binding / mRNA binding / mitochondrion / nucleus / cytosol / cytoplasm
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-DH3 / Chem-NDP / Dihydrofolate reductase
Similarity search - Component
Biological speciesMus musculus (house mouse)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2 Å
AuthorsCody, V. / Pace, J. / Chisum, K. / Rosowsky, A.
CitationJournal: Proteins / Year: 2006
Title: New insights into DHFR interactions: analysis of Pneumocystis carinii and mouse DHFR complexes with NADPH and two highly potent 5-(omega-carboxy(alkyloxy) trimethoprim derivatives reveals ...Title: New insights into DHFR interactions: analysis of Pneumocystis carinii and mouse DHFR complexes with NADPH and two highly potent 5-(omega-carboxy(alkyloxy) trimethoprim derivatives reveals conformational correlations with activity and novel parallel ring stacking interactions.
Authors: Cody, V. / Pace, J. / Chisum, K. / Rosowsky, A.
History
DepositionFeb 9, 2006Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 26, 2006Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 30, 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)22,6203
Polymers21,5041
Non-polymers1,1162
Water2,216123
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)41.806, 61.034, 43.080
Angle α, β, γ (deg.)90.00, 118.00, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein Dihydrofolate reductase


Mass: 21503.844 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Gene: Dhfr / Plasmid: pPH70D / Production host: Escherichia coli (E. coli) / Strain (production host): jm109 / References: UniProt: P00375, dihydrofolate reductase
#2: Chemical ChemComp-NDP / NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE


Mass: 745.421 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H30N7O17P3
#3: Chemical ChemComp-DH3 / 2,4-DIAMINO-5-[3',4'-DIMETHOXY-5'-(5-CARBOXYL-1-PENTYNYL)]BENZYL PYRIMIDINE


Mass: 370.402 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C19H22N4O4
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 123 / 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: 2.26 Å3/Da / Density % sol: 45.46 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: 0.17 M Na Acetate, 0.085 mM Na cacodylate, 25.5% PEG 4K, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 200 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Dec 17, 2004 / Details: mirrors
RadiationMonochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2→27.86 Å / Num. all: 13008 / Num. obs: 12442 / % possible obs: 97.9 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2 / Redundancy: 6 % / Biso Wilson estimate: 15 Å2 / Rmerge(I) obs: 0.037

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1U70

1u70


Resolution: 2→27.86 Å / Isotropic thermal model: isotropic / Cross valid method: THROUGHOUT / σ(F): 2 / σ(I): 2 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.294 1276 -random
Rwork0.234 ---
all0.234 12444 --
obs0.234 12441 84.4 %-
Displacement parametersBiso mean: 54.6 Å2
Refinement stepCycle: LAST / Resolution: 2→27.86 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1513 0 75 123 1711
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.008
X-RAY DIFFRACTIONc_angle_deg1.23
X-RAY DIFFRACTIONc_mcbond_it1.46
X-RAY DIFFRACTIONc_mcangle_it2.35
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2COE-m221.paramCOE-m221.top
X-RAY DIFFRACTION3water_rep.paramwater.top
X-RAY DIFFRACTION4ion.paramion.top
X-RAY DIFFRACTION5DHF-m221.paramDHF-m221.top

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