2D1G

Structure of Francisella tularensis Acid Phosphatase A (AcpA) bound to orthovanadate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of Francisella tularensis AcpA: prototype of a unique superfamily of acid phosphatases and phospholipases C

Felts, R.L.Reilly, T.J.Tanner, J.J.

(2006) J.Biol.Chem. 281: 30289-30298

  • DOI: 10.1074/jbc.M606391200

  • PubMed Abstract: 
  • AcpA is a respiratory burst-inhibiting acid phosphatase from the Centers for Disease Control and Prevention Category A bioterrorism agent Francisella tularensis and prototype of a superfamily of acid phosphatases and phospholipases C. We report the 1 ...

    AcpA is a respiratory burst-inhibiting acid phosphatase from the Centers for Disease Control and Prevention Category A bioterrorism agent Francisella tularensis and prototype of a superfamily of acid phosphatases and phospholipases C. We report the 1.75-A resolution crystal structure of AcpA complexed with the inhibitor orthovanadate, which is the first structure of any F. tularensis protein and the first for any member of this superfamily. The core domain is a twisted 8-stranded beta-sheet flanked by three alpha-helices on either side, with the active site located above the carboxyl-terminal edge of the beta-sheet. This architecture is unique among acid phosphatases and resembles that of alkaline phosphatase. Unexpectedly, the active site features a serine nucleophile and metal ion with octahedral coordination. Structure-based sequence analysis of the AcpA superfamily predicts that the hydroxyl nucleophile and metal center are also present in AcpA-like phospholipases C. These results imply a phospholipase C catalytic mechanism that is radically different from that of zinc metallophospholipases.


    Organizational Affiliation

    Department of Chemistry, University of Missouri, Columbia, Missouri 65211, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
acid phosphatase
A, B
498Francisella tularensis subsp. novicida (strain U112)Mutation(s): 0 
Find proteins for A0Q436 (Francisella tularensis subsp. novicida (strain U112))
Go to UniProtKB:  A0Q436
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ETE
Query on ETE

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A
2-{2-[2-2-(METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL
C9 H20 O5
ZNYRFEPBTVGZDN-UHFFFAOYSA-N
 Ligand Interaction
DVT
Query on DVT

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B
DECAVANADATE
O28 V10
WOYKCMUEHQAMTC-UHFFFAOYSA-N
 Ligand Interaction
UNX
Query on UNX

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A, B
UNKNOWN ATOM OR ION
X
*
 Ligand Interaction
PGE
Query on PGE

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B
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
ETX
Query on ETX

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Download CCD File 
A
2-ETHOXYETHANOL
C4 H10 O2
ZNQVEEAIQZEUHB-UHFFFAOYSA-N
 Ligand Interaction
VO4
Query on VO4

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Download CCD File 
A, B
VANADATE ION
O4 V
LSGOVYNHVSXFFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.198 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 112.081α = 90.00
b = 144.399β = 90.00
c = 123.859γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
HKL-2000data reduction
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-15
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description