4ZFN | pdb_00004zfn

Hypoxanthine-guanine-xanthine phosphoribosyltransferase (HGXPRT) from Sulfolobus solfataricus containing GMP complexed in two different ways together with one or two MG2+

• PDB DOI: https://doi.org/10.2210/pdb4ZFN/pdb

• Classification: TRANSFERASE
• Organism(s): Saccharolobus solfataricus P2
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-04-21 Released: 2015-04-29 
• Deposition Author(s): Christoffersen, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.236 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.180 (Depositor), 0.180 (DCC) 
• R-Value Observed: 
  0.183 (Depositor) 

Starting Model: experimental

Literature

Sulfolobus solfataricus P2

Christoffersen, S., Hansen, M.R., Jensen, K.S., Larsen, S., Jensen, K.F.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content 

• Total Structure Weight: 42.36 kDa 
• Atom Count: 3,346 
• Modeled Residue Count: 350 
• Deposited Residue Count: 358 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Purine phosphoribosyltransferase (GpT-2)	A, B	179	Saccharolobus solfataricus P2	Mutation(s): 0  Gene Names: gpT-2, SSO2424 EC: 2.4.2
UniProt
Find proteins for Q97W22 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)) Explore Q97W22  Go to UniProtKB:  Q97W22

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
5GP	C [auth A], F [auth B]	GUANOSINE-5'-MONOPHOSPHATE C10 H14 N5 O8 P RQFCJASXJCIDSX-UUOKFMHZSA-N
SO4	E [auth A], I [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
MG	D [auth A], G [auth B], H [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.236 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.180 (Depositor), 0.180 (DCC) 
• R-Value Observed: 0.183 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.467	α = 90
b = 74.467	β = 90
c = 143.527	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-04-29 
Deposition Author(s): Christoffersen, S.

Revision History  

• Version 1.0: 2015-04-29
  Type: Initial release
  
• Version 1.1: 2024-01-10
  Changes: Data collection, Database references, Derived calculations, Refinement description