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- PDB-1q4w: CRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-3H-QUINAZOLI... -

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Basic information

Entry
Database: PDB / ID: 1q4w
TitleCRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-3H-QUINAZOLIN-4-ONE
ComponentsQueuine tRNA-ribosyltransferase
KeywordsTRANSFERASE
Function / homology
Function and homology information


tRNA-guanosine34 preQ1 transglycosylase / tRNA wobble guanine modification / tRNA-guanosine(34) queuine transglycosylase activity / : / tRNA queuosine(34) biosynthetic process / metal ion binding / cytosol
Similarity search - Function
Queuine tRNA-ribosyltransferase-like / : / tRNA-guanine transglycosylase / tRNA-guanine(15) transglycosylase-like / Queuine tRNA-ribosyltransferase-like / Queuine tRNA-ribosyltransferase / TIM Barrel / Alpha-Beta Barrel / Alpha Beta
Similarity search - Domain/homology
2,6-DIAMINO-3H-QUINAZOLIN-4-ONE / Queuine tRNA-ribosyltransferase
Similarity search - Component
Biological speciesZymomonas mobilis (bacteria)
MethodX-RAY DIFFRACTION / FOURIER SYNTHESIS / Resolution: 1.93 Å
AuthorsBrenk, R. / Meyer, E. / Reuter, K. / Stubbs, M.T. / Garcia, G.A. / Klebe, G.
CitationJournal: J.Mol.Biol. / Year: 2004
Title: Crystallographic Study of Inhibitors of tRNA-guanine Transglycosylase Suggests a New Structure-based Pharmacophore for Virtual Screening.
Authors: Brenk, R. / Meyer, E. / Reuter, K. / Stubbs, M.T. / Garcia, G.A. / Diederich, F. / Klebe, G.
History
DepositionAug 4, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 13, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Aug 19, 2020Group: Advisory / Data collection / Derived calculations
Category: pdbx_distant_solvent_atoms / pdbx_struct_assembly ...pdbx_distant_solvent_atoms / pdbx_struct_assembly / pdbx_struct_assembly_gen / pdbx_struct_assembly_prop / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / struct_biol / struct_conn / struct_site
Item: _pdbx_struct_assembly_prop.biol_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id ..._pdbx_struct_assembly_prop.biol_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_seq_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.ptnr1_label_seq_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_conn.ptnr2_label_seq_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Aug 16, 2023Group: Advisory / Data collection ...Advisory / 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 / pdbx_unobs_or_zero_occ_atoms
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Queuine tRNA-ribosyltransferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)43,1673
Polymers42,9261
Non-polymers2422
Water7,368409
1
A: Queuine tRNA-ribosyltransferase
hetero molecules

A: Queuine tRNA-ribosyltransferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)86,3356
Polymers85,8512
Non-polymers4834
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-x,y,-z1
Buried area4110 Å2
ΔGint-7 kcal/mol
Surface area27100 Å2
MethodPISA
Unit cell
Length a, b, c (Å)91.350, 65.330, 70.160
Angle α, β, γ (deg.)90.00, 96.10, 90.00
Int Tables number5
Space group name H-MC121

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Components

#1: Protein Queuine tRNA-ribosyltransferase / tRNA-guanine transglycosylase / Guanine insertion enzyme / TGT


Mass: 42925.703 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Zymomonas mobilis (bacteria) / Gene: TGT / Plasmid: PET9D / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3)
References: UniProt: P28720, tRNA-guanosine34 preQ1 transglycosylase
#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-DQU / 2,6-DIAMINO-3H-QUINAZOLIN-4-ONE / 2,6-DIAMINOQUINAZOLIN-4(3H)-ONE


Mass: 176.175 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H8N4O
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 409 / 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: 2.42 Å3/Da / Density % sol: 49.27 %
Crystal growTemperature: 295 K / Method: vapor diffusion, hanging drop / pH: 8.5
Details: PEG 8000, TRIS, DMSO, DTT, pH 8.50, VAPOR DIFFUSION, HANGING DROP, temperature 295K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU300 / Wavelength: 1.54 / Wavelength: 1.54 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Jul 28, 1999 / Details: MIRRORS
RadiationMonochromator: YALE MIRROR / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 1.93→30 Å / Num. obs: 30993 / % possible obs: 100 % / Redundancy: 3.2 % / Rsym value: 0.108
Reflection shellResolution: 1.93→1.97 Å / Rsym value: 0.324 / % possible all: 100

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB ENTRY 1PUD

1pud


Resolution: 1.93→30 Å / Rfactor Rfree error: 0.004 / Data cutoff high absF: 559666.96 / Data cutoff high rms absF: 559666.96 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.207 2853 9.9 %RANDOM
Rwork0.171 ---
obs0.171 28679 92.5 %-
all-30993 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 88.8296 Å2 / ksol: 0.468138 e/Å3
Displacement parametersBiso mean: 20.8 Å2
Baniso -1Baniso -2Baniso -3
1-1.05 Å20 Å2-0.82 Å2
2---3.01 Å20 Å2
3---1.96 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.22 Å0.18 Å
Luzzati d res low-5 Å
Luzzati sigma a0.14 Å0.1 Å
Refinement stepCycle: LAST / Resolution: 1.93→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2836 0 14 409 3259
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.005
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_deg1.2
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d22.1
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.79
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.281.5
X-RAY DIFFRACTIONc_mcangle_it1.962
X-RAY DIFFRACTIONc_scbond_it1.992
X-RAY DIFFRACTIONc_scangle_it2.872.5
LS refinement shellResolution: 1.93→2.05 Å / Rfactor Rfree error: 0.011 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.229 404 9.6 %
Rwork0.182 3789 -
obs--81.8 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2DNA-RNA_REP.PARAMDNA-RNA.TOP
X-RAY DIFFRACTION3WATER_REP.PARAMWATER.TOP
X-RAY DIFFRACTION4ION.PARAMION.TOP
X-RAY DIFFRACTION5DQU.PARDQU.TOP

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