5DXL

Structure of Aspergillus fumigatus trehalose-6-phosphate phosphatase crystal form 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.573 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structures of trehalose-6-phosphate phosphatase from pathogenic fungi reveal the mechanisms of substrate recognition and catalysis.

Miao, Y.Tenor, J.L.Toffaletti, D.L.Washington, E.J.Liu, J.Shadrick, W.R.Schumacher, M.A.Lee, R.E.Perfect, J.R.Brennan, R.G.

(2016) Proc.Natl.Acad.Sci.USA 113: 7148-7153

  • DOI: 10.1073/pnas.1601774113
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Trehalose is a disaccharide essential for the survival and virulence of pathogenic fungi. The biosynthesis of trehalose requires trehalose-6-phosphate synthase, Tps1, and trehalose-6-phosphate phosphatase, Tps2. Here, we report the structures of the ...

    Trehalose is a disaccharide essential for the survival and virulence of pathogenic fungi. The biosynthesis of trehalose requires trehalose-6-phosphate synthase, Tps1, and trehalose-6-phosphate phosphatase, Tps2. Here, we report the structures of the N-terminal domain of Tps2 (Tps2NTD) from Candida albicans, a transition-state complex of the Tps2 C-terminal trehalose-6-phosphate phosphatase domain (Tps2PD) bound to BeF3 and trehalose, and catalytically dead Tps2PD(D24N) from Cryptococcus neoformans bound to trehalose-6-phosphate (T6P). The Tps2NTD closely resembles the structure of Tps1 but lacks any catalytic activity. The Tps2PD-BeF3-trehalose and Tps2PD(D24N)-T6P complex structures reveal a "closed" conformation that is effected by extensive interactions between each trehalose hydroxyl group and residues of the cap and core domains of the protein, thereby providing exquisite substrate specificity. Disruption of any of the direct substrate-protein residue interactions leads to significant or complete loss of phosphatase activity. Notably, the Tps2PD-BeF3-trehalose complex structure captures an aspartyl-BeF3 covalent adduct, which closely mimics the proposed aspartyl-phosphate intermediate of the phosphatase catalytic cycle. Structures of substrate-free Tps2PD reveal an "open" conformation whereby the cap and core domains separate and visualize the striking conformational changes effected by substrate binding and product release and the role of two hinge regions centered at approximately residues 102-103 and 184-188. Significantly, tps2Δ, tps2NTDΔ, and tps2D705N strains are unable to grow at elevated temperatures. Combined, these studies provide a deeper understanding of the substrate recognition and catalytic mechanism of Tps2 and provide a structural basis for the future design of novel antifungal compounds against a target found in three major fungal pathogens.


    Organizational Affiliation

    Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN 38105.,Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710; richard.brennan@duke.edu.,Division of Infectious Diseases, Department of Medicine, Duke University Medical Center, Durham, NC 27710;,Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
trehalose-6-phosphate phosphatase
A
286Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100)Mutation(s): 0 
EC: 2.4.1.15
Find proteins for Q4WWF5 (Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100))
Go to UniProtKB:  Q4WWF5
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.573 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.200 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 45.383α = 90.00
b = 65.472β = 90.00
c = 118.517γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHENIXrefinement
PHENIXphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited States1P01 AI104533-01A1

Revision History 

  • Version 1.0: 2016-06-15
    Type: Initial release
  • Version 1.1: 2016-06-29
    Type: Database references
  • Version 1.2: 2016-07-13
    Type: Database references
  • Version 1.3: 2017-09-13
    Type: Author supporting evidence, Database references, Derived calculations