4YVN

Crystal structure of CotA laccase complexed with ABTS at a novel binding site


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.158 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of CotA laccase complexed with 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonate) at a novel binding site

Liu, Z.Xie, T.Zhong, Q.Wang, G.

(2016) Acta Crystallogr.,Sect.F 72: 328-335

  • DOI: 10.1107/S2053230X1600426X
  • Primary Citation of Related Structures:  4YVU

  • PubMed Abstract: 
  • The CotA laccase from Bacillus subtilis is an abundant component of the spore outer coat and has been characterized as a typical laccase. The crystal structure of CotA complexed with 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS) in a hole ...

    The CotA laccase from Bacillus subtilis is an abundant component of the spore outer coat and has been characterized as a typical laccase. The crystal structure of CotA complexed with 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS) in a hole motif has been solved. The novel binding site was about 26 Å away from the T1 binding pocket. Comparison with known structures of other laccases revealed that the hole is a specific feature of CotA. The key residues Arg476 and Ser360 were directly bound to ABTS. Site-directed mutagenesis studies revealed that the residues Arg146, Arg429 and Arg476, which are located at the bottom of the novel binding site, are essential for the oxidation of ABTS and syringaldazine. Specially, a Thr480Phe variant was identified to be almost 3.5 times more specific for ABTS than for syringaldazine compared with the wild type. These results suggest this novel binding site for ABTS could be a potential target for protein engineering of CotA laccases.


    Organizational Affiliation

    Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Spore coat protein A
A
513Bacillus subtilis (strain 168)Gene Names: cotA (pig)
Find proteins for P07788 (Bacillus subtilis (strain 168))
Go to UniProtKB:  P07788
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EBS
Query on EBS

Download SDF File 
Download CCD File 
A
3-ETHYL-2-[(2Z)-2-(3-ETHYL-6-SULFO-1,3-BENZOTHIAZOL-2(3H)-YLIDENE)HYDRAZINO]-6-SULFO-3H-1,3-BENZOTHIAZOL-1-IUM
C18 H18 N4 O6 S4
ZTOJFFHGPLIVKC-YAFCTCPESA-N
 Ligand Interaction
GOL
Query on GOL

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

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Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
CU
Query on CU

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.158 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 101.993α = 90.00
b = 101.993β = 90.00
c = 135.791γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHASERphasing
REFMACrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-03-30
    Type: Initial release
  • Version 1.1: 2016-04-06
    Type: Database references
  • Version 1.2: 2016-04-27
    Type: Database references