5ESW

Crystal structure of Apo hypoxanthine-guanine phosphoribosyltransferase from Legionella pneumophila

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.168 

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This is version 1.1 of the entry. See complete history. 


Literature

Crystal structures of Apo and GMP bound hypoxanthine-guanine phosphoribosyltransferase from Legionella pneumophila and the implications in gouty arthritis

Zhang, N., Gong, X., Lu, M., Chen, X., Qin, X., Ge, H.

(2016) J Struct Biol 194: 311-316

  • DOI: 10.1016/j.jsb.2016.03.007
  • Primary Citation of Related Structures:  
    5ESX, 5ESW

  • PubMed Abstract: 

    • Hypoxanthine-guanine phosphoribosyltransferase (HGPRT) (EC 2.4.2.8) reversibly catalyzes the transfer of the 5-phophoribosyl group from 5-phosphoribosyl-alpha-1-pyrophosphate (PRPP) to hypoxanthine or guanine to form inosine monophosphate (IMP) or gu ...

    Hypoxanthine-guanine phosphoribosyltransferase (HGPRT) (EC 2.4.2.8) reversibly catalyzes the transfer of the 5-phophoribosyl group from 5-phosphoribosyl-alpha-1-pyrophosphate (PRPP) to hypoxanthine or guanine to form inosine monophosphate (IMP) or guanosine monophosphate (GMP) in the purine salvage pathway. To investigate the catalytic mechanism of this enzyme in the intracellular pathogen Legionella pneumophila, we determined the crystal structures of the L. pneumophila HGPRT (LpHGPRT) both in its apo-form and in complex with GMP. The structures reveal that LpHGPRT comprises a core domain and a hood domain which are packed together to create a cavity for GMP-binding and the enzymatic catalysis. The binding of GMP induces conformational changes of the stable loop II. This new binding site is closely related to the Gout arthritis-linked human HGPRT mutation site (Ser103Arg). Finally, these structures of LpHGPRT provide insights into the catalytic mechanism of HGPRT.

    Organizational Affiliation: 

    Institute of Health Sciences and School of Life Science, Anhui University, Hefei, Anhui 230601, China; Modern Experiment Technology Center, Anhui University, Hefei, Anhui 230601, China. Electronic address: ghh_ahu@foxmail.com.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Purine/pyrimidine phosphoribosyltransferaseA, B197Legionella pneumophila subsp. pneumophila str. Philadelphia 1Mutation(s): 0 
Gene Names: lpg1519
EC: 2.4.2.8
Find proteins for Q5ZVC1 (Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513))
Explore Q5ZVC1 
Go to UniProtKB:  Q5ZVC1
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4
Download Ideal Coordinates CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.168 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.02α = 90
b = 67.892β = 90
c = 94.789γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

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View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31400641
National Natural Science Foundation of ChinaChina31270770

Revision History 

  • Version 1.0: 2016-03-30
    Type: Initial release
  • Version 1.1: 2016-05-18
    Changes: Database references