1IXG

PHOSPHATE-BINDING PROTEIN MUTANT WITH THR 141 REPLACED BY ASP (T141D), COMPLEXED WITH PHOSPATE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.05 Å
  • R-Value Free: 0.139 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A low energy short hydrogen bond in very high resolution structures of protein receptor--phosphate complexes.

Wang, Z.Luecke, H.Yao, N.Quiocho, F.A.

(1997) Nat.Struct.Mol.Biol. 4: 519-522

  • Primary Citation of Related Structures:  1IXH, 1IXI

  • PubMed Abstract: 
  • A very short hydrogen bond between an Asp and a phosphate is established in two high resolution structures (0.98 and 1.05 A). A mutant complex that changes the Asp to an Asn, which forms a normal hydrogen bond, has a similar free energy of binding to ...

    A very short hydrogen bond between an Asp and a phosphate is established in two high resolution structures (0.98 and 1.05 A). A mutant complex that changes the Asp to an Asn, which forms a normal hydrogen bond, has a similar free energy of binding to the wild type complex, suggesting that the contribution of the short hydrogen bond is not extraordinarily strong.


    Related Citations: 
    • The Immunodominant 38-kDa Lipoprotein Antigen of Mycobacterium Tuberculosis is a Phosphate-Binding Protein
      Chang, Z.,Choudhary, A.,Lathigra, R.,Quiocho, F.A.
      (1994) J.Biol.Chem. 269: 1956
    • Modulation of a Salt Link Does not Affect Binding of Phosphate to its Specific Active Transport Receptor
      Yao, N.,Ledvina, P.S.,Choudhary, A.,Quiocho, F.A.
      (1996) Biochemistry 35: 2079
    • Negative Electrostatic Surface Potential of Protein Sites Specific for Anionic Ligands
      Ledvina, P.S.,Yao, N.,Choudhary, A.,Quiocho, F.A.
      (1996) Proc.Natl.Acad.Sci.USA 93: 6786
    • Fine Tuning the Specificity of the Periplasmic Phosphate Transport Receptor. Site-Directed Mutagenesis, Ligand Binding, and Crystallographic Studies
      Wang, Z.,Choudhary, A.,Ledvina, P.S.,Quiocho, F.A.
      (1994) J.Biol.Chem. 269: 25091
    • High Specificity of a Phosphate Transport Protein Determined by Hydrogen Bonds
      Luecke, H.,Quiocho, F.A.
      (1990) Nature 347: 402



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHATE-BINDING PROTEIN
A
321Escherichia coli (strain K12)Gene Names: pstS (phoS)
Find proteins for P0AG82 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG82
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.05 Å
  • R-Value Free: 0.139 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 41.645α = 90.00
b = 63.493β = 90.00
c = 123.788γ = 90.00
Software Package:
Software NamePurpose
SHELXL-96model building
SHELXL-96phasing
SCALEPACKdata scaling
SHELXL-96refinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-02-04
    Type: Initial release
  • Version 1.1: 2008-03-21
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance