4OUA

Coexistent single-crystal structure of latent and active mushroom tyrosinase (abPPO4) mediated by a hexatungstotellurate(VI)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.763 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Latent and active abPPO4 mushroom tyrosinase cocrystallized with hexatungstotellurate(VI) in a single crystal.

Mauracher, S.G.Molitor, C.Al-Oweini, R.Kortz, U.Rompel, A.

(2014) Acta Crystallogr.,Sect.D 70: 2301-2315

  • DOI: 10.1107/S1399004714013777

  • PubMed Abstract: 
  • Tyrosinases, bifunctional metalloenzymes, catalyze the oxidation of monophenols and o-diphenols to o-quinones, the precursor compounds of the brown-coloured pigment melanin. In eukaryotic organisms, tyrosinases are expressed as latent zymogens that h ...

    Tyrosinases, bifunctional metalloenzymes, catalyze the oxidation of monophenols and o-diphenols to o-quinones, the precursor compounds of the brown-coloured pigment melanin. In eukaryotic organisms, tyrosinases are expressed as latent zymogens that have to be proteolytically cleaved in order to form highly active enzymes. This activation mechanism, known as the tyrosinase maturation process, has scientific and industrial significance with respect to biochemical and technical applications of the enzyme. Here, not only the first crystal structure of the mushroom tyrosinase abPPO4 is presented in its active form (Ser2-Ser383) and in its 21 kDa heavier latent form (Ser2-Thr545), but furthermore the simultaneous presence of both forms within one single-crystal structure is shown. This allows for a simple approach to investigate the transition between these two forms. Isoform abPPO4 was isolated and extensively purified from the natural source (Agaricus bisporus), which contains a total of six polyphenol oxidases (PPOs). The enzyme formed crystals (diffracting to a resolution of 2.76 Å) owing to the employment of the 6-tungstotellurate(VI) salt (Na6[TeW6O24]·22H2O) as a cocrystallization agent. Two of these disc-shaped Anderson-type polyoxoanions [TeW6O24](6-) separate two asymmetric units comprising one crystallographic heterodimer of abPPO4, thus resulting in very interesting crystal packing.


    Related Citations: 
    • High level protein-purification allows the unambiguous polypeptide determination of latent isoform PPO4 of mushroom tyrosinase.
      Mauracher, S.G.,Molitor, C.,Michael, C.,Kragl, M.,Rizzi, A.,Rompel, A.
      (2014) Phytochemistry 99: 14
    • Crystallization and preliminary X-ray crystallographic analysis of latent isoform PPO4 mushroom (Agaricus bisporus) tyrosinase.
      Mauracher, S.G.,Molitor, C.,Al-Oweini, R.,Kortz, U.,Rompel, A.
      (2014) Acta Crystallogr.,Sect.F 70: 263


    Organizational Affiliation

    Institut für Biophysikalische Chemie, Fakultät für Chemie, Universität Wien, Althanstrasse 14, 1090 Wien, Austria.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
proteolytically activated form of PPO4 Tyrosinase
A
382N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
latent form of PPO4 Tyrosinase
B
557N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A, B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
CU1
Query on CU1

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Download CCD File 
A, B
COPPER (I) ION
Cu
VMQMZMRVKUZKQL-UHFFFAOYSA-N
 Ligand Interaction
TRS
Query on TRS

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Download CCD File 
A, B
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
TEW
Query on TEW

Download SDF File 
Download CCD File 
A, B
6-tungstotellurate(VI)
O24 Te W6
JDLYBIMRCSJRQJ-UHFFFAOYSA-M
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SAC
Query on SAC
A, B
L-PEPTIDE LINKINGC5 H9 N O4SER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.763 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.186 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 213.530α = 90.00
b = 83.720β = 102.53
c = 66.950γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
PHENIXphasing
GDAdata collection
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-25
    Type: Initial release
  • Version 1.1: 2014-09-10
    Type: Database references
  • Version 1.2: 2014-09-24
    Type: Database references
  • Version 1.3: 2018-01-24
    Type: Structure summary
  • Version 1.4: 2018-01-31
    Type: Source and taxonomy