4P6R

Crystal Structure of tyrosinase from Bacillus megaterium with tyrosine in the active site


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Determination of tyrosinase substrate-binding modes reveals mechanistic differences between type-3 copper proteins.

Goldfeder, M.Kanteev, M.Isaschar-Ovdat, S.Adir, N.Fishman, A.

(2014) Nat Commun 5: 4505-4505

  • DOI: 10.1038/ncomms5505
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Tyrosinase is responsible for the two initial enzymatic steps in the conversion of tyrosine to melanin. Many tyrosinase mutations are the leading cause of albinism in humans, and it is a prominent biotechnology and pharmaceutical industry target. Her ...

    Tyrosinase is responsible for the two initial enzymatic steps in the conversion of tyrosine to melanin. Many tyrosinase mutations are the leading cause of albinism in humans, and it is a prominent biotechnology and pharmaceutical industry target. Here we present crystal structures that show that both monophenol hydroxylation and diphenol oxidation occur at the same site. It is suggested that concurrent presence of a phenylalanine above the active site and a restricting thioether bond on the histidine coordinating CuA prevent hydroxylation of monophenols by catechol oxidases. Furthermore, a conserved water molecule activated by E195 and N205 is proposed to mediate deprotonation of the monophenol at the active site. Overall, the structures reveal precise steps in the enzymatic catalytic cycle as well as differences between tyrosinases and other type-3 copper enzymes.


    Organizational Affiliation

    Department of Biotechnology and Food Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.,Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel.,1] Department of Biotechnology and Food Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel [2].




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosinase
A, B
287Bacillus megateriumMutation(s): 0 
Find proteins for B2ZB02 (Bacillus megaterium)
Go to UniProtKB:  B2ZB02
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
TYR
Query on TYR

Download SDF File 
Download CCD File 
A, B
TYROSINE
C9 H11 N O3
OUYCCCASQSFEME-QMMMGPOBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.191 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 49.800α = 90.00
b = 78.680β = 102.63
c = 85.820γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
PHENIXrefinement
SCALAdata scaling
PHASERphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Israel Science FoundationIsrael193/11

Revision History 

  • Version 1.0: 2014-07-30
    Type: Initial release
  • Version 1.1: 2014-08-06
    Type: Database references
  • Version 1.2: 2017-11-22
    Type: Derived calculations, Other, Refinement description, Source and taxonomy