1QAP

QUINOLINIC ACID PHOSPHORIBOSYLTRANSFERASE WITH BOUND QUINOLINIC ACID


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.274 
  • R-Value Work: 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


  • 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) provide ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
QUINOLINIC ACID PHOSPHORIBOSYLTRANSFERASE
A, B
296Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Gene Names: nadC
EC: 2.4.2.19
Find proteins for P30012 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  P30012
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NTM
Query on NTM

Download SDF File 
Download 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: 2.8 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.186 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 81.400α = 90.00
b = 81.400β = 90.00
c = 217.300γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
XENGENdata reduction
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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