1TFU

phosphopantetheine adenylyltransferase from Mycobacterium tuberculosis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Substrate-induced asymmetry and channel closure revealed by the apoenzyme structure of Mycobacterium tuberculosis phosphopantetheine adenylyltransferase.

Morris, V.K.Izard, T.

(2004) Protein Sci. 13: 2547-2552

  • DOI: 10.1110/ps.04816904

  • PubMed Abstract: 
  • Phosphopantetheine adenylyltransferase (PPAT) catalyzes the penultimate step in prokaryotic coenzyme A (CoA) biosynthesis, directing the transfer of an adenylyl group from ATP to 4'-phosphopantetheine (Ppant) to yield dephospho-CoA (dPCoA). The cryst ...

    Phosphopantetheine adenylyltransferase (PPAT) catalyzes the penultimate step in prokaryotic coenzyme A (CoA) biosynthesis, directing the transfer of an adenylyl group from ATP to 4'-phosphopantetheine (Ppant) to yield dephospho-CoA (dPCoA). The crystal structures of Escherichia coli PPAT bound to its substrates, product, and inhibitor revealed an allosteric hexameric enzyme with half-of-sites reactivity, and established an in-line displacement catalytic mechanism. To provide insight into the mechanism of ligand binding we solved the apoenzyme (Apo) crystal structure of PPAT from Mycobacterium tuberculosis. In its Apo form, PPAT is a symmetric hexamer with an open solvent channel. However, ligand binding provokes asymmetry and alters the structure of the solvent channel, so that ligand binding becomes restricted to one trimer.


    Organizational Affiliation

    Department of Hematology-Oncology, St. Jude Children's Research Hospital, Memphis TN 38105, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phosphopantetheine adenylyltransferase
A
157Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Mutation(s): 0 
Gene Names: coaD (kdtB)
EC: 2.7.7.3
Find proteins for P9WPA5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WPA5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.229 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 98.623α = 90.00
b = 98.623β = 90.00
c = 114.811γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2011-11-16
    Type: Atomic model