Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 32625.11 
• Atom Count: 2286 
• Residue Count: 288 
• Unique protein chains: 1

1RFG

Crystal Structure of Human Purine Nucleoside Phosphorylase Complexed with Guanosine

• DOI: 10.2210/pdb1RFG/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2003-11-09 Released: 2004-12-14 
• Deposition Author(s): Canduri, F., Silva, R.G., Dos Santos, D.M., Palma, M.S., Basso, L.A., Santos, D.S., de Azevedo, W.F.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.9 Å
• R-Value Free: 0.267 
• R-Value Work: 0.206 

Literature

Structure of human PNP complexed with ligands.

Canduri, F., Silva, R.G., dos Santos, D.M., Palma, M.S., Basso, L.A., Santos, D.S., de Azevedo, W.F.

(2005) Acta Crystallogr.,Sect.D 61: 856-862

• PubMed: 15983407 
• DOI: 10.1107/S0907444905005421
• Primary Citation of Related Structures:  
  1V45, 1V41


• PubMed Abstract: 
  

Purine nucleoside phosphorylase (PNP) is a key enzyme in the purine-salvage pathway, which allows cells to utilize preformed bases and nucleosides in order to synthesize nucleotides. PNP is specific for purine nucleosides in the beta-configuration and exhibits a strong preference for purines containing a 6-keto group and ribosyl-containing nucleosides relative to the corresponding analogues. PNP was crystallized in complex with ligands and data collection was performed using synchrotron radiation. This work reports the structure of human PNP in complex with guanosine (at 2.80 A resolution), 3'-deoxyguanosine (at 2.86 A resolution) and 8-azaguanine (at 2.85 A resolution). These structures were compared with the PNP-guanine, PNP-inosine and PNP-immucillin-H complexes solved previously.

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Related Citations: 

• Crystal Structural of Human Purine Nucleoside Phosphorylase at 2.3 Angstrom Resolution
  de Azevedo Jr., W.F.,Canduri, F.,dos Santos, D.M.,Silva, R.G.,de Oliveira, J.S.,de Carvalho, L.P.,Basso, L.A.,Mendes, M.A.,Palma, M.S.,Santos, D.S.
  (2003) BIOCHEM.BIOPHYS.RES.COMMUN. 308: 545




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Organizational Affiliation: 

Programa de Pós-Graduação em Biofísica Molecular, Departamento de Física, UNESP, São José do Rio Preto, SP 15054-000, Brazil.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Purine nucleoside phosphorylase	E	288	Homo sapiens	Mutation(s): 0  Gene Names: PNP (NP) EC: 2.4.2.1
Find proteins for P00491 (Homo sapiens) Go to Gene View: PNP Go to UniProtKB:  P00491

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SO4	E	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GMP	E	GUANOSINE C10 H13 N5 O5 NYHBQMYGNKIUIF-UUOKFMHZSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.9 Å
• R-Value Free: 0.267 
• R-Value Work: 0.206 
• Space Group: H 3 2

Unit Cell:

Length (Å)	Angle (°)
a = 139.380	α = 90.00
b = 139.380	β = 90.00
c = 160.400	γ = 120.00

Software Package:

Software Name	Purpose
SCALA	data scaling
AMoRE	phasing
X-PLOR	refinement
MOSFLM	data reduction
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-11-09 
• Released Date: 2004-12-14 
• Deposition Author(s): Canduri, F., Silva, R.G., Dos Santos, D.M., Palma, M.S., Basso, L.A., Santos, D.S., de Azevedo, W.F.

Revision History 

• Version 1.0: 2004-12-14
  Type: Initial release
• Version 1.1: 2008-04-29
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance