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- PDB-1b8n: PURINE NUCLEOSIDE PHOSPHORYLASE -

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Basic information

Entry
Database: PDB / ID: 1b8n
TitlePURINE NUCLEOSIDE PHOSPHORYLASE
ComponentsPURINE NUCLEOSIDE PHOSPHORYLASE
KeywordsTRANSFERASE / PENTOSYLTRANSFERASE / PURINE NUCLEOSIDE PHOSPHORYLASE
Function / homology
Function and homology information


guanosine phosphorylase activity / purine-nucleoside phosphorylase / purine-nucleoside phosphorylase activity / purine ribonucleoside salvage / cytoplasm
Similarity search - Function
Purine nucleoside phosphorylase I, inosine/guanosine-specific / Purine phosphorylase, family 2, conserved site / Purine and other phosphorylases family 2 signature. / Purine nucleoside phosphorylase / Nucleoside phosphorylase domain / Nucleoside phosphorylase domain / Phosphorylase superfamily / Nucleoside phosphorylase superfamily / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Chem-IMG / PHOSPHATE ION / Purine nucleoside phosphorylase
Similarity search - Component
Biological speciesBos taurus (domestic cattle)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2 Å
AuthorsFedorov, A.A. / Kicska, G.A. / Fedorov, E.V. / Strokopytov, B.V. / Tyler, P.C. / Furneaux, R.H. / Schramm, V.L. / Almo, S.C.
Citation
Journal: Biochemistry / Year: 2002
Title: Atomic dissection of the hydrogen bond network for transition-state analogue binding to purine nucleoside phosphorylase
Authors: Kicska, G.A. / Tyler, P.C. / Evans, G.B. / Furneaux, R.H. / Shi, W. / Fedorov, A.A. / Lewandowicz, A. / Cahill, S.M. / Almo, S.C. / Schramm, V.L.
#1: Journal: Biochemistry / Year: 1998
Title: Calf spleen purine nucleoside phosphorylase complexed with substrates and substrate analogues.
Authors: Mao, C. / Cook, W.J. / Zhou, M. / Federov, A.A. / Almo, S.C. / Ealick, S.E.
History
DepositionFeb 2, 1999Deposition site: BNL / Processing site: RCSB
Revision 1.0Feb 8, 1999Provider: repository / Type: Initial release
Revision 1.1Apr 26, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Oct 30, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.page_last / _citation.pdbx_database_id_PubMed ..._citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name
Revision 1.4Aug 9, 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_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_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.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: PURINE NUCLEOSIDE PHOSPHORYLASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)32,0884
Polymers31,6871
Non-polymers4013
Water2,612145
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
A: PURINE NUCLEOSIDE PHOSPHORYLASE
hetero molecules

A: PURINE NUCLEOSIDE PHOSPHORYLASE
hetero molecules

A: PURINE NUCLEOSIDE PHOSPHORYLASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)96,26312
Polymers95,0613
Non-polymers1,2029
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation6_357z-3/2,-x+1/2,-y+21
crystal symmetry operation12_576-y+1/2,-z+2,x+3/21
Buried area9770 Å2
ΔGint-70 kcal/mol
Surface area28000 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)90.320, 90.320, 90.320
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number198
Cell settingcubic
Space group name H-MP213

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Components

#1: Protein PURINE NUCLEOSIDE PHOSPHORYLASE / E.C.2.4.2.1


Mass: 31687.113 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Details: COMPLEXED WITH TRANSITION-STATE ANALOGUE 1,4-DIDEOXY-1,4-IMINO-1-(S)-(9-DEAZAGUANIN-9-YL)-D-RIBITOL
Source: (natural) Bos taurus (domestic cattle) / Organ: SPLEEN
References: UniProt: P55859, purine-nucleoside phosphorylase
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#3: Chemical ChemComp-PO4 / PHOSPHATE ION


Mass: 94.971 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: PO4
#4: Chemical ChemComp-IMG / 1,4-DIDEOXY-1,4-IMINO-1-(S)-(9-DEAZAGUANIN-9-YL)-D-RIBITOL / IMMUCILLIN-G


Mass: 281.268 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C11H15N5O4
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 145 / 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: 2.22 Å3/Da / Density % sol: 43 %
Crystal growpH: 8 / Details: pH 8.0
Components of the solutions
IDNameCrystal-IDSol-ID
1PEG-40011
2TRIS11
3MGCL211
4K3PO411
Crystal
*PLUS
Crystal grow
*PLUS
Method: vapor diffusion, hanging drop / Details: Fedorov, R.H., (2001) Biochemistry, 40, 853.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
130 mg/mlPNP1drop
210 mMphosphate1drop
335 %PEG4001reservoir
4100 mMTris1reservoir
5100 mM1reservoirMgCl2
610 mMpotassium phosphate1reservoir

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Data collection

DiffractionMean temperature: 140 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X9B / Wavelength: 1.04019
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Oct 15, 1998
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.04019 Å / Relative weight: 1
ReflectionResolution: 2→20 Å / Num. obs: 16237 / % possible obs: 99.9 % / Redundancy: 4 % / Rmerge(I) obs: 0.08 / Net I/σ(I): 20
Reflection shellResolution: 2→2.09 Å / Rmerge(I) obs: 0.49 / Mean I/σ(I) obs: 4.1
Reflection
*PLUS
% possible obs: 86.8 % / Rmerge(I) obs: 0.077
Reflection shell
*PLUS
% possible obs: 76.8 %

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLOR3.851refinement
X-PLORphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1PBN

1pbn


Resolution: 2→8 Å / Cross valid method: THROUGHOUT / σ(F): 2
RfactorNum. reflection% reflectionSelection details
Rfree0.246 -5 %RANDOM
Rwork0.164 ---
obs-14374 86.8 %-
Displacement parametersBiso mean: 26.9 Å2
Refinement stepCycle: LAST / Resolution: 2→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2182 0 26 145 2353
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.01
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_d24.6
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.37
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→2.09 Å / Total num. of bins used: 8
RfactorNum. reflection% reflection
Rfree0.296 -5 %
Rwork0.241 1173 -
obs--76.8 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMTOPHCSDX.PRO
X-RAY DIFFRACTION2PARAM11.DNATOPH11.DNA
Software
*PLUS
Name: X-PLOR / Version: 3.851 / Classification: refinement
Refinement
*PLUS
σ(F): 2 / % reflection Rfree: 5 % / Rfactor obs: 0.164
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 26.9 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_angle_deg1.5
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg24.6
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.37
LS refinement shell
*PLUS
Rfactor Rfree: 0.296 / % reflection Rfree: 5 % / Rfactor Rwork: 0.241

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