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- PDB-3hk5: Crystal structure of uronate isomerase from Bacillus halodurans c... -

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Basic information

Entry
Database: PDB / ID: 3hk5
TitleCrystal structure of uronate isomerase from Bacillus halodurans complexed with zinc and D-Arabinarate
ComponentsUronate isomerase
KeywordsISOMERASE / uronate isomerase / Mechanism of the reaction / D-Arabinarate
Function / homologyuronate isomerase, domain 2, chain A / uronate isomerase, domain 2, chain A / Metal-dependent hydrolase / Orthogonal Bundle / Mainly Alpha / metal ion binding / CARBONATE ION / D-arabinaric acid / BH0493 protein
Function and homology information
Biological speciesBacillus halodurans C-125 (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.2 Å
AuthorsFedorov, A.A. / Fedorov, E.V. / Nguyen, T.T. / Raushel, F.M. / Almo, S.C.
CitationJournal: Biochemistry / Year: 2009
Title: The mechanism of the reaction catalyzed by uronate isomerase illustrates how an isomerase may have evolved from a hydrolase within the amidohydrolase superfamily.
Authors: Nguyen, T.T. / Fedorov, A.A. / Williams, L. / Fedorov, E.V. / Li, Y. / Xu, C. / Almo, S.C. / Raushel, F.M.
History
DepositionMay 22, 2009Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 25, 2009Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Sep 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 / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _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_asym_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_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: Uronate isomerase
B: Uronate isomerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)100,82612
Polymers100,0142
Non-polymers81310
Water4,666259
1
A: Uronate isomerase
B: Uronate isomerase
hetero molecules

A: Uronate isomerase
B: Uronate isomerase
hetero molecules

A: Uronate isomerase
B: Uronate isomerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)302,47936
Polymers300,0416
Non-polymers2,43830
Water1086
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-y,x-y,z1
crystal symmetry operation3_555-x+y,-x,z1
Buried area11190 Å2
ΔGint-27.5 kcal/mol
Surface area41060 Å2
MethodPISA
2
A: Uronate isomerase
B: Uronate isomerase
hetero molecules

A: Uronate isomerase
B: Uronate isomerase
hetero molecules

A: Uronate isomerase
B: Uronate isomerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)302,47936
Polymers300,0416
Non-polymers2,43830
Water1086
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-y,x-y,z1
crystal symmetry operation3_555-x+y,-x,z1
Buried area11190 Å2
ΔGint-27.5 kcal/mol
Surface area41020 Å2
MethodPISA
Unit cell
Length a, b, c (Å)149.347, 149.347, 254.158
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number155
Space group name H-MH32
Components on special symmetry positions
IDModelComponents
11A-431-

ZN

21A-432-

CL

31B-431-

ZN

41B-432-

CL

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Components

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Protein / Sugars , 2 types, 4 molecules AB

#1: Protein Uronate isomerase / BH0493 protein


Mass: 50006.852 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacillus halodurans C-125 (bacteria) / Strain: C-125 / DSM 18197 / FERM 7344 / JCM 9153 / Gene: BH0493 / Production host: Escherichia coli (E. coli) / References: UniProt: Q9KFI6
#2: Sugar ChemComp-RAT / D-arabinaric acid / D-arabinarate


Type: D-saccharide / Mass: 180.113 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Formula: C5H8O7

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Non-polymers , 4 types, 267 molecules

#3: Chemical ChemComp-CO3 / CARBONATE ION


Mass: 60.009 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: CO3
#4: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Zn
#5: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Cl
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 259 / 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: 2.73 Å3/Da / Density % sol: 54.9 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 8.5
Details: 25% PEG 3350, 0.1M Tris-HCl, 0.2M NaCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X4A / Wavelength: 0.97915 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: May 2, 2007 / Details: mirrors
RadiationMonochromator: Si(111) CHANNEL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97915 Å / Relative weight: 1
ReflectionResolution: 2.2→25 Å / Num. all: 55294 / Num. obs: 55294 / % possible obs: 99.7 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Biso Wilson estimate: 24.3 Å2 / Rmerge(I) obs: 0.058

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Processing

Software
NameVersionClassification
ADSCQuantumdata collection
BALBESphasing
CNS1.1refinement
DENZOdata reduction
SCALEPACKdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB entry 2Q08

2q08


Resolution: 2.2→24.94 Å / Rfactor Rfree error: 0.004 / Data cutoff high absF: 3371422.01 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.238 2807 5.1 %RANDOM
Rwork0.218 ---
all0.22 55294 --
obs0.22 55294 99.7 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 52.9656 Å2 / ksol: 0.368338 e/Å3
Displacement parametersBiso mean: 36.8 Å2
Baniso -1Baniso -2Baniso -3
1--8.27 Å2-1.14 Å20 Å2
2---8.27 Å20 Å2
3---16.55 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.32 Å0.28 Å
Luzzati d res low-5 Å
Luzzati sigma a0.29 Å0.23 Å
Refinement stepCycle: LAST / Resolution: 2.2→24.94 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6764 0 38 259 7061
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.007
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_dihedral_angle_d21
X-RAY DIFFRACTIONc_improper_angle_d0.8
X-RAY DIFFRACTIONc_mcbond_it1.111.5
X-RAY DIFFRACTIONc_mcangle_it1.672
X-RAY DIFFRACTIONc_scbond_it1.942
X-RAY DIFFRACTIONc_scangle_it2.722.5
LS refinement shellResolution: 2.2→2.28 Å / Rfactor Rfree error: 0.018 / Total num. of bins used: 10
RfactorNum. reflection% reflection
Rfree0.309 281 5.1 %
Rwork0.272 5200 -
obs-5200 99.9 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2water_rep.paramwater.top
X-RAY DIFFRACTION3ion.paramion.top
X-RAY DIFFRACTION4INH_par.txt&_1_TOPOLOGY_INFILE_4
X-RAY DIFFRACTION5&_1_PARAMETER_INFILE_5&_1_TOPOLOGY_INFILE_5

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