1GRQ

CHLORAMPHENICOL PHOSPHOTRANSFERASE IN COMPLEX WITH P-AMINO-CHLORAMPHENICOL FROM STREPTOMYCES VENEZUELAE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.278 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for Chloramphenicol Tolerance in Streptomyces Venezuelae by Chloramphenicol Phosphotransferase Activity

Izard, T.

(2001) Protein Sci. 10: 1508

  • DOI: 10.1002/pro.101508
  • Primary Citation of Related Structures:  1GRR

  • PubMed Abstract: 
  • Streptomyces venezuelae synthesizes chloramphenicol (Cm), an inhibitor of ribosomal peptidyl transferase activity, thereby inhibiting bacterial growth. The producer escapes autoinhibition by its own secondary metabolite through phosphorylation of Cm ...

    Streptomyces venezuelae synthesizes chloramphenicol (Cm), an inhibitor of ribosomal peptidyl transferase activity, thereby inhibiting bacterial growth. The producer escapes autoinhibition by its own secondary metabolite through phosphorylation of Cm by chloramphenicol phosphotransferase (CPT). In addition to active site binding, CPT binds its product 3-phosphoryl-Cm, in an alternate product binding site. To address the mechanisms of Cm tolerance of the producer, the crystal structures of CPT were determined in complex with either the nonchlorinated Cm (2-N-Ac-Cm) at 3.1 A resolution or the antibiotic's immediate precursor, the p-amino analog p-NH(2)-Cm, at 2.9 A resolution. Surprisingly, p-NH(2)-Cm binds CPT in a novel fashion. Additionally, neither 2-N-Ac-Cm nor p-NH(2)-Cm binds to the secondary product binding site.


    Organizational Affiliation

    Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105-2794, USA. Tina.Izard@stjude.org




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHLORAMPHENICOL 3-O PHOSPHOTRANSFERASE
A
178Streptomyces venezuelae (strain ATCC 10712 / CBS 650.69 / DSM 40230 / JCM 4526 / NBRC 13096 / PD 04745)EC: 2.7.1.-
Find proteins for Q56148 (Streptomyces venezuelae (strain ATCC 10712 / CBS 650.69 / DSM 40230 / JCM 4526 / NBRC 13096 / PD 04745))
Go to UniProtKB:  Q56148
Small Molecules
Ligands 2 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
CLK
Query on CLK

Download SDF File 
Download CCD File 
A
ALPHA-N-DICHLOROACETYL-P-AMINOPHENYLSERINOL
C11 H14 Cl2 N2 O3
BFLNGKUCFYKCFZ-RKDXNWHRSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.278 
  • Space Group: I 41 3 2
Unit Cell:
Length (Å)Angle (°)
a = 200.000α = 90.00
b = 200.000β = 90.00
c = 200.000γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2001-12-15 
  • Released Date: 2002-01-04 
  • Deposition Author(s): Izard, T.

Revision History 

  • Version 1.0: 2002-01-04
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance