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- PDB-5z6j: High-pressure Crystal Structure Analysis of M20 loop closed DHFR ... -

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Basic information

Entry
Database: PDB / ID: 5z6j
TitleHigh-pressure Crystal Structure Analysis of M20 loop closed DHFR at 220 MPa
ComponentsDihydrofolate reductase
KeywordsOXIDOREDUCTASE / M20 loop closed form
Function / homology
Function and homology information


methotrexate binding / dihydrofolic acid binding / 10-formyltetrahydrofolate biosynthetic process / response to methotrexate / folic acid biosynthetic process / folic acid binding / NADP+ binding / dihydrofolate metabolic process / dihydrofolate reductase / dihydrofolate reductase activity ...methotrexate binding / dihydrofolic acid binding / 10-formyltetrahydrofolate biosynthetic process / response to methotrexate / folic acid biosynthetic process / folic acid binding / NADP+ binding / dihydrofolate metabolic process / dihydrofolate reductase / dihydrofolate reductase activity / folic acid metabolic process / NADPH binding / tetrahydrofolate biosynthetic process / one-carbon metabolic process / NADP binding / response to xenobiotic stimulus / response to antibiotic / 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
FOLIC ACID / NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / Dihydrofolate reductase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 1.803 Å
AuthorsWatanabe, N. / Nagae, T. / Yamada, H.
Funding support Japan, 2items
OrganizationGrant numberCountry
JSPS KAKENHI21657027 Japan
JSPS KAKENHI24657071 Japan
CitationJournal: Acta Crystallogr D Struct Biol / Year: 2018
Title: High-pressure protein crystal structure analysis of Escherichia coli dihydrofolate reductase complexed with folate and NADP.
Authors: Nagae, T. / Yamada, H. / Watanabe, N.
History
DepositionJan 23, 2018Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 19, 2018Provider: repository / Type: Initial release
Revision 1.1Oct 30, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Dihydrofolate reductase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)19,5633
Polymers18,3781
Non-polymers1,1852
Water2,432135
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2180 Å2
ΔGint-1 kcal/mol
Surface area7910 Å2
Unit cell
Length a, b, c (Å)34.132, 44.926, 98.438
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Dihydrofolate reductase


Mass: 18377.736 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (strain K12) (bacteria)
Strain: K12 / Gene: folA, tmrA, b0048, JW0047 / Production host: Escherichia coli (E. coli) / References: UniProt: P0ABQ4, dihydrofolate reductase
#2: Chemical ChemComp-FOL / FOLIC ACID


Mass: 441.397 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C19H19N7O6
#3: Chemical ChemComp-NAP / NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / 2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE


Mass: 743.405 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H28N7O17P3
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 135 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 2.07 Å3/Da / Density % sol: 40.57 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / Details: PEG 400, CaCl, imidazole buffer

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Data collection

DiffractionMean temperature: 297 K
Diffraction sourceSource: SYNCHROTRON / Site: AichiSR / Beamline: BL2S1 / Wavelength: 0.75 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Feb 10, 2016
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.75 Å / Relative weight: 1
ReflectionResolution: 1.8→49.22 Å / Num. obs: 14502 / % possible obs: 99.4 % / Redundancy: 9.2 % / Rmerge(I) obs: 0.073 / Net I/σ(I): 22.3
Reflection shellResolution: 1.8→1.84 Å / Rmerge(I) obs: 0.398

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Processing

Software
NameVersionClassification
PHENIX(1.13_2998)refinement
XDSdata reduction
Aimlessdata scaling
MOLREPphasing
RefinementResolution: 1.803→49.219 Å / SU ML: 0.2 / Cross valid method: FREE R-VALUE / σ(F): 1.37 / Phase error: 19.03
RfactorNum. reflection% reflection
Rfree0.203 724 5.02 %
Rwork0.1669 --
obs0.1687 14411 98.84 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å
Refinement stepCycle: LAST / Resolution: 1.803→49.219 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1282 0 80 135 1497
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0071415
X-RAY DIFFRACTIONf_angle_d1.1431937
X-RAY DIFFRACTIONf_dihedral_angle_d7.6741114
X-RAY DIFFRACTIONf_chiral_restr0.068201
X-RAY DIFFRACTIONf_plane_restr0.007248
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.8027-1.94190.23591570.19382656X-RAY DIFFRACTION99
1.9419-2.13730.21781230.17612653X-RAY DIFFRACTION97
2.1373-2.44660.16471330.15712728X-RAY DIFFRACTION99
2.4466-3.08240.20881560.17092750X-RAY DIFFRACTION100
3.0824-49.23740.20091550.15932900X-RAY DIFFRACTION99

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