PM1 mutant, 7D5

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.2 of the entry. See complete history


Advanced Synthesis of Conductive Polyaniline Using Laccase as Biocatalyst.

de Salas, F.Pardo, I.Salavagione, H.J.Aza, P.Amougi, E.Vind, J.Martinez, A.T.Camarero, S.

(2016) PLoS One 11: e0164958

  • DOI: https://doi.org/10.1371/journal.pone.0164958
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Polyaniline is a conductive polymer with distinctive optical and electrical properties. Its enzymatic synthesis is an environmentally friendly alternative to the use of harsh oxidants and extremely acidic conditions. 7D5L, a high-redox potential laccase developed in our lab, is the biocatalyst of choice for the synthesis of green polyaniline (emeraldine salt) due to its superior ability to oxidize aniline and kinetic stability at the required polymerization conditions (pH 3 and presence of anionic surfactants) as compared with other fungal laccases. Doses as low as 7.6 nM of 7D5L catalyze the polymerization of 15 mM aniline (in 24 h, room temperature, 7% yield) in the presence of different anionic surfactants used as doping templates to provide linear and water-soluble polymers. Aniline polymerization was monitored by the increase of the polaron absorption band at 800 nm (typical for emeraldine salt). Best polymerization results were obtained with 5 mM sodium dodecylbenzenesulfonate (SDBS) as template. At fixed conditions (15 mM aniline and 5mM SDBS), polymerization rates obtained with 7D5L were 2.5-fold the rates obtained with commercial Trametes villosa laccase. Moreover, polyaniline yield was notably boosted to 75% by rising 7D5L amount to 0.15 μM, obtaining 1g of green polyaniline in 1L-reaction volume. The green polymer obtained with the selected system (7D5L/SDBS) holds excellent electrochemical and electro-conductive properties displayed in water-dispersible nanofibers, which is advantageous for the nanomaterial to be readily cast into uniform films for different applications.

  • Organizational Affiliation

    Novozymes A/S Krogshoejvej 36, 2880, Bagsvaerd, Denmark.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
496Aspergillus oryzaeMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on NAG

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
J [auth B],
K [auth B]
C8 H15 N O6
Query on SO4

Download Ideal Coordinates CCD File 
O4 S
Query on CU

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth A]
H [auth A]
L [auth B]
E [auth A],
F [auth A],
G [auth A],
H [auth A],
L [auth B],
M [auth B],
N [auth B],
O [auth B]
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 
  • Space Group: I 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 202.61α = 90
b = 202.61β = 90
c = 202.61γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
European Research CouncilSpainKBBE-2013-7-613549

Revision History  (Full details and data files)

  • Version 1.0: 2019-08-14
    Type: Initial release
  • Version 1.1: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary
  • Version 1.2: 2024-01-17
    Changes: Data collection, Database references, Refinement description, Structure summary