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- PDB-1b78: STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A H... -

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Basic information

Entry
Database: PDB / ID: 1b78
TitleSTRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226
ComponentsPYROPHOSPHATASE
KeywordsSTRUCTURAL GENOMICS / PYROPHOSPHATASE / HYPERTHERMAL PROTEIN
Function / homology
Function and homology information


XTP/dITP diphosphatase / purine nucleoside triphosphate catabolic process / ITP diphosphatase activity / XTP diphosphatase activity / dITP diphosphatase activity / nucleoside triphosphate catabolic process / nucleoside triphosphate diphosphatase activity / nucleotide metabolic process / ribonucleoside triphosphate phosphatase activity / nucleotide binding ...XTP/dITP diphosphatase / purine nucleoside triphosphate catabolic process / ITP diphosphatase activity / XTP diphosphatase activity / dITP diphosphatase activity / nucleoside triphosphate catabolic process / nucleoside triphosphate diphosphatase activity / nucleotide metabolic process / ribonucleoside triphosphate phosphatase activity / nucleotide binding / metal ion binding / cytoplasm
Similarity search - Function
dITP/XTP pyrophosphatase / Ham1-like protein / Ham1 family / Inosine triphosphate pyrophosphatase-like / Maf protein - #10 / Maf protein / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
dITP/XTP pyrophosphatase
Similarity search - Component
Biological speciesMethanocaldococcus jannaschii (archaea)
MethodX-RAY DIFFRACTION / MIR / Resolution: 2.2 Å
AuthorsHwang, K.Y. / Chung, J.H. / Han, Y.S. / Kim, S.H. / Cho, Y.
CitationJournal: Nat.Struct.Biol. / Year: 1999
Title: Structure-based identification of a novel NTPase from Methanococcus jannaschii.
Authors: Hwang, K.Y. / Chung, J.H. / Kim, S.H. / Han, Y.S. / Cho, Y.
History
DepositionJan 27, 1999Deposition site: BNL / Processing site: RCSB
Revision 1.0Jan 28, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 26, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Dec 27, 2023Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
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: PYROPHOSPHATASE
B: PYROPHOSPHATASE


Theoretical massNumber of molelcules
Total (without water)44,4652
Polymers44,4652
Non-polymers00
Water5,044280
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1860 Å2
ΔGint-16 kcal/mol
Surface area17940 Å2
MethodPISA
Unit cell
Length a, b, c (Å)44.360, 72.890, 141.350
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 PYROPHOSPHATASE /


Mass: 22232.453 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Methanocaldococcus jannaschii (archaea) / References: UniProt: Q57679
#2: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 280 / 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: 2.57 Å3/Da / Density % sol: 52.12 %
Crystal growpH: 6.5 / Details: pH 6.50
Crystal grow
*PLUS
pH: 7.5 / Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
110 mg/mlprotein1drop
220 mMpotassium phosphate1drop
320 mM1dropNaCl
40.1 MADA1reservoir
510 %PEG60001reservoir
620 %isopropanol1reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceWavelength: 1.542
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.542 Å / Relative weight: 1
ReflectionResolution: 2.2→50 Å / Num. obs: 23663 / % possible obs: 95 % / Redundancy: 5.3 % / Biso Wilson estimate: 14.7 Å2 / Rmerge(I) obs: 0.043 / Rsym value: 5.5

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Processing

SoftwareName: X-PLOR / Version: 3.851 / Classification: refinement
RefinementMethod to determine structure: MIR / Resolution: 2.2→6 Å / Rfactor Rfree error: 0.006 / Cross valid method: THROUGHOUT / σ(F): 2
RfactorNum. reflection% reflectionSelection details
Rfree0.267 2171 9.9 %RANDOM
Rwork0.189 ---
obs0.189 21998 96.7 %-
Displacement parametersBiso mean: 22.4 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.31 Å0.21 Å
Luzzati d res low-5 Å
Luzzati sigma a0.15 Å0.07 Å
Refinement stepCycle: LAST / Resolution: 2.2→6 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2990 0 0 280 3270
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.011
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.5
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d27.4
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d0.85
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
LS refinement shellResolution: 2.2→2.33 Å / Rfactor Rfree error: 0.016 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.288 336 9.4 %
Rwork0.186 3227 -
obs--95.4 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMTOPHCSDX.PRO
X-RAY DIFFRACTION2PARAM11.WATTOPH11.WAT
Software
*PLUS
Version: 3.851 / Classification: refinement
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg27.4
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg0.85

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