Biological Assembly 1  

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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: 32377.00 
• Atom Count: 2268 
• Residue Count: 289 
• Unique protein chains: 1

1ULA

APPLICATION OF CRYSTALLOGRAPHIC AND MODELING METHODS IN THE DESIGN OF PURINE NUCLEOSIDE PHOSPHORYLASE INHIBITORS

• DOI: 10.2210/pdb1ULA/pdb
• Entry 1ULA supersedes 2PNP

• Classification: PENTOSYLTRANSFERASE
• Organism(s): Homo sapiens


• Deposited: 1991-11-05 Released: 1993-01-15 
• Deposition Author(s): Ealick, S.E., Rule, S.A., Carter, D.C., Greenhough, T.J., Babu, Y.S., Cook, W.J., Habash, J., Helliwell, J.R., Stoeckler, J.D., Parksjunior, R.E., Chen, S.-F., Bugg, C.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å

Literature

Application of crystallographic and modeling methods in the design of purine nucleoside phosphorylase inhibitors.

Ealick, S.E., Babu, Y.S., Bugg, C.E., Erion, M.D., Guida, W.C., Montgomery, J.A., Secrist 3rd., J.A.

(1991) Proc.Natl.Acad.Sci.USA 88: 11540-11544

• PubMed: 1763067 
• Primary Citation of Related Structures:  
  1ULB
• Also Cited By: 1RCT


• PubMed Abstract: 
  

Competitive inhibitors of the salvage pathway enzyme purine-nucleoside phosphorylase (purine-nucleoside:orthophosphate ribosyltransferase, EC 2.4.2.1) have been designed by using the three-dimensional structure of the enzyme as determined by x-ray crystallography. The process was an iterative one that utilized interactive computer graphics, Monte Carlo-based conformational searching, energy minimization, and x-ray crystallography. The proposed compounds were synthesized and tested by an in vitro assay. Among the compounds designed and synthesized are the most potent competitive inhibitors of purine nucleoside phosphorylase thus far reported.

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Related Citations: 

• Crystallization and Preliminary X-Ray Investigation of Human Erythrocyte Purine Nucleoside Phosphorylase
  Cook, W.J.,Ealick, S.E.,Bugg, C.E.,Stoeckler, J.D.,Parksjunior, R.E.
  (1981) J.Biol.Chem. 256: 4079
• Three-Dimensional Structure of Human Erythrocytic Purine Nucleoside Phosphorylase at 3.2 Angstroms Resolution
  Ealick, S.E.,Rule, S.A.,Carter, D.C.,Greenhough, T.J.,Babu, Y.S.,Cook, W.J.,Habash, J.,Helliwell, J.R.,Stoeckler, J.D.,Parksjunior, R.E.,Chen, S.-F.,Bugg, C.E.
  (1990) J.Biol.Chem. 265: 1812




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Organizational Affiliation: 

University of Alabama, Birmingham 35294.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PURINE NUCLEOSIDE PHOSPHORYLASE	A	289	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 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SO4	A	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• Space Group: H 3 2

Unit Cell:

Length (Å)	Angle (°)
a = 142.900	α = 90.00
b = 142.900	β = 90.00
c = 165.200	γ = 120.00

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1991-11-05 
• Released Date: 1993-01-15 
• Deposition Author(s): Ealick, S.E., Rule, S.A., Carter, D.C., Greenhough, T.J., Babu, Y.S., Cook, W.J., Habash, J., Helliwell, J.R., Stoeckler, J.D., Parksjunior, R.E., Chen, S.-F., Bugg, C.E.
• This entry supersedes: 2PNP

Revision History 

• Version 1.0: 1993-01-15
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance