1NH8

ATP PHOSPHORIBOSYLTRANSFERASE (ATP-PRTASE) FROM MYCOBACTERIUM TUBERCULOSIS IN COMPLEX WITH AMP AND HISTIDINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of ATP phosphoribosyltransferase from Mycobacterium tuberculosis

Cho, Y.Sharma, V.Sacchettini, J.C.

(2003) J.Biol.Chem. 278: 8333

  • DOI: 10.1074/jbc.M212124200
  • Primary Citation of Related Structures:  1NH7

  • PubMed Abstract: 
  • The N-1-(5'-phosphoribosyl)-ATP transferase catalyzes the first step of the histidine biosynthetic pathway and is regulated by a feedback mechanism by the product histidine. The crystal structures of the N-1-(5'-phosphoribosyl)-ATP transferase from M ...

    The N-1-(5'-phosphoribosyl)-ATP transferase catalyzes the first step of the histidine biosynthetic pathway and is regulated by a feedback mechanism by the product histidine. The crystal structures of the N-1-(5'-phosphoribosyl)-ATP transferase from Mycobacterium tuberculosis in complex with inhibitor histidine and AMP has been determined to 1.8 A resolution and without ligands to 2.7 A resolution. The active enzyme exists primarily as a dimer, and the histidine-inhibited form is a hexamer. The structure represents a new fold for a phosphoribosyltransferase, consisting of three continuous domains. The inhibitor AMP binds in the active site cavity formed between the two catalytic domains. A model for the mechanism of allosteric inhibition has been derived from conformational differences between the AMP:His-bound and apo structures.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Texas A & M University, College Station 77843-2128, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP Phosphoribosyltransferase
A
304Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Gene Names: hisG
EC: 2.4.2.17
Find proteins for P9WMN1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WMN1
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
AMP
Query on AMP

Download SDF File 
Download CCD File 
A
ADENOSINE MONOPHOSPHATE
C10 H14 N5 O7 P
UDMBCSSLTHHNCD-KQYNXXCUSA-N
 Ligand Interaction
HIS
Query on HIS

Download SDF File 
Download CCD File 
A
HISTIDINE
C6 H10 N3 O2
HNDVDQJCIGZPNO-YFKPBYRVSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.198 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 113.754α = 90.00
b = 113.754β = 90.00
c = 124.254γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
SHARPphasing
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-02-11
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance