1QAP

QUINOLINIC ACID PHOSPHORIBOSYLTRANSFERASE WITH BOUND QUINOLINIC ACID


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.186 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A new function for a common fold: the crystal structure of quinolinic acid phosphoribosyltransferase.

Eads, J.C.Ozturk, D.Wexler, T.B.Grubmeyer, C.Sacchettini, J.C.

(1997) Structure 5: 47-58

  • DOI: 10.1016/s0969-2126(97)00165-2
  • Primary Citation of Related Structures:  
    1QAP

  • PubMed Abstract: 
  • Quinolinic acid (QA) is a neurotoxin and has been shown to be present at high levels in the central nervous system of patients with certain diseases, such as AIDS and meningitis. The enzyme quinolinic acid phosphoribosyltransferase (QAPRTase) provides the only route for QA metabolism and is also an essential step in de novo NAD biosynthesis ...

    Quinolinic acid (QA) is a neurotoxin and has been shown to be present at high levels in the central nervous system of patients with certain diseases, such as AIDS and meningitis. The enzyme quinolinic acid phosphoribosyltransferase (QAPRTase) provides the only route for QA metabolism and is also an essential step in de novo NAD biosynthesis. QAPRTase catalyzes the synthesis of nicotinic acid mononucleotide (NAMN) from QA and 5-phosphoribosyl-1-pyrophosphate (PRPP). The structures of several phosphoribosyltransferases (PRTases) have been reported, and all have shown a similar fold of a five-strandard beta sheet surrounded by four alpha helices. A conserved sequence motif of 13 residues is common to these 'type I' PRTases but is not observed in the QAPRTase sequence, suggestive of a different fold for this enzyme.


    Organizational Affiliation

    Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY 10461, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
QUINOLINIC ACID PHOSPHORIBOSYLTRANSFERASE AB296Salmonella enterica subsp. enterica serovar TyphimuriumMutation(s): 0 
EC: 2.4.2.19
Find proteins for P30012 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Explore P30012 
Go to UniProtKB:  P30012
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NTM
Query on NTM

Download Ideal Coordinates CCD File 
A, B
QUINOLINIC ACID
C7 H5 N O4
GJAWHXHKYYXBSV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.186 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.4α = 90
b = 81.4β = 90
c = 217.3γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
XENGENdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-03-12
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance