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- PDB-3kbn: Room temperature structure of D-Xylose Isomerase in complex with ... -

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Database: PDB / ID: 3kbn
TitleRoom temperature structure of D-Xylose Isomerase in complex with 2Ni(2+) co-factors and d12-D-glucose in the linear form
ComponentsXylose isomerase
KeywordsISOMERASE / xylose isomerase / linear D-glucose / Carbohydrate metabolism / Metal-binding / Pentose shunt / Xylose metabolism
Function / homology
Function and homology information

D-xylose metabolic process / xylose isomerase / xylose isomerase activity / magnesium ion binding / identical protein binding / cytoplasm
Xylose isomerase / Xylose isomerase-like, TIM barrel domain / Xylose isomerase, actinobacteria / Xylose isomerase-like superfamily / Xylose isomerase-like TIM barrel / Divalent-metal-dependent TIM barrel enzymes / TIM Barrel / Alpha-Beta Barrel / Alpha Beta
Xylose isomerase
Biological speciesStreptomyces rubiginosus (bacteria)
AuthorsKovalevsky, A.Y. / Hanson, L. / Langan, P.
CitationJournal: Structure / Year: 2010
Title: Metal ion roles and the movement of hydrogen during reaction catalyzed by D-xylose isomerase: a joint x-ray and neutron diffraction study.
Authors: Kovalevsky, A.Y. / Hanson, L. / Fisher, S.Z. / Mustyakimov, M. / Mason, S.A. / Forsyth, V.T. / Blakeley, M.P. / Keen, D.A. / Wagner, T. / Carrell, H.L. / Katz, A.K. / Glusker, J.P. / Langan, P.
Validation Report
SummaryFull reportAbout validation report
DepositionOct 20, 2009Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 16, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Mar 7, 2012Group: Database references

Structure visualization

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Deposited unit
A: Xylose isomerase
hetero molecules

Theoretical massNumber of molelcules
Total (without water)43,6405
A: Xylose isomerase
hetero molecules

A: Xylose isomerase
hetero molecules

A: Xylose isomerase
hetero molecules

A: Xylose isomerase
hetero molecules

Theoretical massNumber of molelcules
Total (without water)174,55820
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-x,-y,z1
crystal symmetry operation3_554-x,y,-z-11
crystal symmetry operation4_554x,-y,-z-11
Buried area30480 Å2
ΔGint-119 kcal/mol
Surface area47550 Å2
Unit cell
Length a, b, c (Å)94.007, 99.669, 102.862
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number23
Space group name H-MI222
Components on special symmetry positions



#1: Protein Xylose isomerase /

Mass: 43283.297 Da / Num. of mol.: 1 / Details: THE PROTEIN WAS PURCHASED FROM HAMPTON RESEARCH
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Streptomyces rubiginosus (bacteria) / Gene: xylA / References: UniProt: P24300, xylose isomerase
#2: Chemical ChemComp-NI / NICKEL (II) ION / Nickel

Mass: 58.693 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Ni
#3: Chemical ChemComp-GLO / D-GLUCOSE IN LINEAR FORM

Mass: 180.156 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Formula: C6H12O6
#4: Water ChemComp-HOH / water / Water

Mass: 18.015 Da / Num. of mol.: 341 / Source method: isolated from a natural source / Formula: H2O

Experimental details


ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

Sample preparation

CrystalDensity Matthews: 2.78 Å3/Da / Density % sol: 55.81 %
Crystal growTemperature: 290 K / pH: 7.7
Details: 40mg/ml protein, 5mM NiCl2, 500mM d12-D-glucose 30% (v/v) ammonium sulfate (sat.), pH 7.7, temperature 290K

Data collection

DiffractionMean temperature: 293 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU FR-E DW / Wavelength: 1.54 Å
DetectorType: RIGAKU RAXIS IV++ / Detector: IMAGE PLATE / Date: Mar 10, 2009
RadiationMonochromator: Varimax mirrors / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 1.53→20 Å / Num. all: 72268 / Num. obs: 61655 / % possible obs: 85 % / Observed criterion σ(F): 4 / Observed criterion σ(I): 2
Reflection shellResolution: 1.53→1.58 Å / % possible all: 93.5


CrystalCleardata collection
SHELXmodel building
CrystalCleardata reduction
CrystalCleardata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1XIB
Resolution: 1.53→20 Å / Num. parameters: 30754 / Num. restraintsaints: 37993 / σ(F): 0 / Stereochemistry target values: ENGH AND HUBER
RfactorNum. reflection% reflectionSelection details
Rfree0.1815 3619 5 %RANDOM
Rwork0.138 ---
All0.1406 72268 --
Obs-61655 99.2 %-
Refine analyzeNum. disordered residues: 5 / Occupancy sum hydrogen: 0 / Occupancy sum non hydrogen: 3360.5
Refinement stepCycle: LAST / Resolution: 1.53→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3053 0 15 341 3409
Refine LS restraints
Refinement-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.012
X-RAY DIFFRACTIONs_angle_d0.028
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.0232
X-RAY DIFFRACTIONs_zero_chiral_vol0.055
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.068
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.018
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0.004
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.061
X-RAY DIFFRACTIONs_approx_iso_adps0.09

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