4HD7

Crystal Structure of Tyrosinase from Bacillus megaterium V218G mutant soaked in CuSO4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Influencing the monophenolase/diphenolase activity ratio in tyrosinase.

Goldfeder, M.Kanteev, M.Adir, N.Fishman, A.

(2013) Biochim.Biophys.Acta 1834: 629-633

  • DOI: 10.1016/j.bbapap.2012.12.021
  • Primary Citation of Related Structures:  4HD4, 4HD6

  • PubMed Abstract: 
  • Tyrosinase is a type 3 copper enzyme with great potential for production of commercially valuable diphenols from monophenols. However, the use of tyrosinase is limited by its further oxidation of diphenols to quinones. We recently determined the stru ...

    Tyrosinase is a type 3 copper enzyme with great potential for production of commercially valuable diphenols from monophenols. However, the use of tyrosinase is limited by its further oxidation of diphenols to quinones. We recently determined the structure of the Bacillus megaterium tyrosinase revealing a residue, V218, which we proposed to take part in positioning of substrates within the active site. In the structure of catechol oxidase from Ipomoea batatas, the lack of monophenolase activity was attributed to the presence of F261 near CuA. Consequently, we engineered two variants, V218F and V218G. V218F was expected to have a decreased monophenolase activity, due to the bulky residue extending into the active site. Surprisingly, both V218F and V218G exhibited a 9- and 4.4-fold higher monophenolase/diphenolase activity ratio, respectively. X-ray structures of variant V218F display a flexibility of the phenylalanine residue along with an adjacent histidine, which we propose to be the source of the change in activity ratio.


    Related Citations: 
    • First structures of an active bacterial tyrosinase reveal copper plasticity.
      Sendovski, M.,Kanteev, M.,Ben-Yosef, V.S.,Adir, N.,Fishman, A.
      (2011) J.Mol.Biol. 405: 227


    Organizational Affiliation

    Department of Biotechnology and Food Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosinase
A, B
303Bacillus megateriumN/A
Find proteins for B2ZB02 (Bacillus megaterium)
Go to UniProtKB:  B2ZB02
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CU
Query on CU

Download SDF File 
Download CCD File 
A, B
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.254 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.900α = 90.00
b = 78.670β = 105.91
c = 85.770γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
PHENIXrefinement
MOSFLMdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-01-23
    Type: Initial release
  • Version 1.1: 2013-02-13
    Type: Database references