5ZLL

Mutation in the trinuclear site of CotA-laccase: H493C mutant, PH 8.0


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.172 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Insight into the Allosteric Coupling of Cu1 Site and Trinuclear Cu Cluster in CotA Laccase.

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

(2018) Chembiochem 19: 1502-1506

  • DOI: https://doi.org/10.1002/cbic.201800236
  • Primary Citation of Related Structures:  
    5ZLJ, 5ZLK, 5ZLL, 5ZLM

  • PubMed Abstract: 

    In laccase, type 1 copper (Cu1) was connected to the trinuclear copper center (TNC) by the conserved Cys-His bridge. An allosteric coupling between the two redox sites has been reported; however, the molecular mechanism underlining the allosteric coupling is unknown. In this study, ligands of the two type 3 copper sites, including His491 and His493, in CotA were mutated to Cys or Ala. The crystal structures revealed that mutations at His491 and His493 caused rearrangement of the hydrogen-bond network and geometric distortion of the TNC, which severely impaired the activities of mutants H493A, H493C, and H491C. In addition, the change in TNC affected hydrogen bonds around Cys492 in the mutants and led to Cu1 being partially reduced. These results not only decipher the mechanism of allosteric coupling between Cu1 and TNC in laccase, but also pave the way for laccase protein engineering.


  • Organizational Affiliation

    Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P.R. China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Spore coat protein A513Bacillus subtilis subsp. subtilis str. 168Mutation(s): 1 
Gene Names: cotApigBSU06300
UniProt
Find proteins for P07788 (Bacillus subtilis (strain 168))
Explore P07788 
Go to UniProtKB:  P07788
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07788
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.172 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.827α = 90
b = 101.827β = 90
c = 135.439γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-16
    Type: Initial release
  • Version 1.1: 2020-01-29
    Changes: Database references
  • Version 1.2: 2023-11-22
    Changes: Data collection, Database references, Refinement description