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- PDB-1xt4: Urate Oxidase From Aspergillus Flavus Complexed With Guanine -

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Basic information

Entry
Database: PDB / ID: 1xt4
TitleUrate Oxidase From Aspergillus Flavus Complexed With Guanine
ComponentsUricase
KeywordsOXIDOREDUCTASE / URIC ACID DEGRADATION / DIMERIC BARREL / TUNNEL-SHAPED PROTEIN
Function / homology
Function and homology information


urate oxidase activity / factor-independent urate hydroxylase / purine nucleobase catabolic process / urate catabolic process / peroxisome
Similarity search - Function
Urate Oxidase / Urate Oxidase; / Uricase, conserved site / Uricase signature. / Uricase / Uricase / Roll / Alpha Beta
Similarity search - Domain/homology
Biological speciesAspergillus flavus (mold)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.01 Å
AuthorsRetailleau, P. / Colloc'h, N. / Vivares, D. / Bonnete, F. / Castro, B. / El Hajji, M. / Prange, T.
Citation
Journal: Acta Crystallogr.,Sect.D / Year: 2005
Title: Urate oxidase from Aspergillus flavus: new crystal-packing contacts in relation to the content of the active site.
Authors: Retailleau, P. / Colloc'h, N. / Vivares, D. / Bonnete, F. / Castro, B. / El Hajji, M. / Prange, T.
#1: Journal: Nat.Struct.Biol. / Year: 1997
Title: Crystal structure of the protein drug urate oxidase-inhibitor complex at 2.05 A resolution
Authors: Colloc'h, N. / El Hajji, M. / Bachet, B. / L'Hermite, G. / Schiltz, M. / Castro, B. / Mornon, J.P.
History
DepositionOct 21, 2004Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Mar 22, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Oct 25, 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_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_leaving_atom_flag / _struct_ref_seq_dif.details / _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: Uricase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)34,3512
Polymers34,2001
Non-polymers1511
Water2,108117
1
A: Uricase
hetero molecules

A: Uricase
hetero molecules

A: Uricase
hetero molecules

A: Uricase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)137,4038
Polymers136,7984
Non-polymers6054
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_665-x+1,-y+1,z1
crystal symmetry operation3_656-x+1,y,-z+11
crystal symmetry operation4_566x,-y+1,-z+11
Buried area24640 Å2
ΔGint-105 kcal/mol
Surface area44230 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)79.984, 96.445, 105.543
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number23
Space group name H-MI222
DetailsThe biological assembly is a tetramer generated from the monomer in the asymmetric unit by the operations: x, 1-y, 1-z, and 1-x, y, 1-z and 1-x, 1-y, z

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Components

#1: Protein Uricase / urate oxidase


Mass: 34199.586 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Aspergillus flavus (mold) / Production host: Saccharomyces cerevisiae (brewer's yeast)
References: UniProt: Q00511, factor-independent urate hydroxylase
#2: Chemical ChemComp-GUN / GUANINE


Mass: 151.126 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C5H5N5O
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 117 / 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: 2.88 Å3/Da / Density % sol: 56.9 %
Crystal growTemperature: 291 K / Method: vapor diffusion, sitting drop / pH: 8
Details: 8.5MG/ML PROTEIN, 0.2MG/ML Guanine, 5-7%(W/V) PEG 8000, 100MM TRIS/HCL, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K

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Data collection

DiffractionMean temperature: 293 K
Diffraction sourceSource: ROTATING ANODE / Type: ENRAF-NONIUS / Wavelength: 1.5418 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Nov 23, 2003 / Details: mirrors
RadiationMonochromator: OSMIC MIRRORS / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2→25 Å / Num. obs: 26240 / % possible obs: 94.1 % / Redundancy: 5.5 % / Biso Wilson estimate: 33.1 Å2 / Rsym value: 0.134 / Net I/σ(I): 13.5
Reflection shellResolution: 2→2.15 Å / Mean I/σ(I) obs: 9.4 / Rsym value: 0.281 / % possible all: 90.6

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
BUSTER-TNTrefinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1r51

1r51


Resolution: 2.01→15 Å / Isotropic thermal model: isotropic / Cross valid method: THROUGHOUT / Stereochemistry target values: Engh & Huber
RfactorNum. reflectionSelection details
Rfree0.213 2599 random
Rwork0.169 --
all-26180 -
obs-25860 -
Displacement parametersBiso mean: 29.3 Å2
Refine analyzeLuzzati coordinate error obs: 0.205 Å
Refinement stepCycle: LAST / Resolution: 2.01→15 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2362 0 11 117 2490
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONt_bond_d0.011
X-RAY DIFFRACTIONt_angle_deg1.21

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