6FC7

Crystal Structure of Two-Domain Laccase mutant H165F from Streptomyces griseoflavus with high copper ions occupancy


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Investigations of Accessibility of T2/T3 Copper Center of Two-Domain Laccase fromStreptomyces griseoflavusAc-993.

Gabdulkhakov, A.Kolyadenko, I.Kostareva, O.Mikhaylina, A.Oliveira, P.Tamagnini, P.Lisov, A.Tishchenko, S.

(2019) Int J Mol Sci 20: --

  • DOI: 10.3390/ijms20133184
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Laccases (EC 1.10.3.2) are multicopper oxidoreductases acting on diphenols and related substances. Laccases are highly important for biotechnology and environmental remediation. These enzymes contain mononuclear one T2 copper ion and two T3 copper io ...

    Laccases (EC 1.10.3.2) are multicopper oxidoreductases acting on diphenols and related substances. Laccases are highly important for biotechnology and environmental remediation. These enzymes contain mononuclear one T2 copper ion and two T3 copper ions (Cu3 α and Cu3 β ), which form the so-called trinuclear center (TNC). Along with the typical three-domain laccases Bacteria produce two-domain (2D) enzymes, which are active at neutral and basic pH, thermostable, and resistant to inhibitors. In this work we present the comparative analysis of crystal structures and catalytic properties of recombinant 2D laccase from Streptomyces griseoflavus Ac-993 (SgfSL) and its four mutant forms with replacements of two amino acid residues, located at the narrowing of the presumable T3-solvent tunnels. We obtained inactive enzymes with substitutions of His165, with Phe, and Ile170 with Ala or Phe. His165Ala variant was more active than the wild type. We suggest that His165 is a "gateway" at the O 2 -tunnel leading from solvent to the Cu3 β of the enzyme. The side chain of Ile170 could be indirectly involved in the coordination of copper ions at the T3 center by maintaining the position of the imidazole ring of His157 that belongs to the first coordination sphere of Cu3 α .


    Organizational Affiliation

    G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino 142292, Moscow Region, Russia.,Institute of Protein Research RAS, Institutskaya 4, Pushchino, Moscow 142290, Russia.,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal.,Institute of Protein Research RAS, Institutskaya 4, Pushchino, Moscow 142290, Russia. sveta@vega.protres.ru.,IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Two-domain laccase
A, B, C, D, E, F, G, H, I, J, K, L
322Streptomyces griseoflavusMutation(s): 0 
EC: 1.10.3.2
Find proteins for A0A0M4FJ81 (Streptomyces griseoflavus)
Go to UniProtKB:  A0A0M4FJ81
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OXY
Query on OXY

Download SDF File 
Download CCD File 
D, J
OXYGEN MOLECULE
O2
MYMOFIZGZYHOMD-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
PER
Query on PER

Download SDF File 
Download CCD File 
B, D, E, G, J, K
PEROXIDE ION
O2
ANAIPYUSIMHBEL-UHFFFAOYSA-N
 Ligand Interaction
CU
Query on CU

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.195 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 77.025α = 90.00
b = 94.585β = 90.00
c = 115.931γ = 92.01
Software Package:
Software NamePurpose
XSCALEdata scaling
PHENIXrefinement
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Russian Foundation for Basic ResearchRussian Federation--

Revision History 

  • Version 1.0: 2019-01-30
    Type: Initial release
  • Version 1.1: 2019-07-17
    Type: Data collection, Database references