3PPS

Crystal structure of an ascomycete fungal laccase from Thielavia arenaria


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

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Literature

Crystal structure of an ascomycete fungal laccase from Thielavia arenaria--common structural features of asco-laccases.

Kallio, J.P.Gasparetti, C.Andberg, M.Boer, H.Koivula, A.Kruus, K.Rouvinen, J.Hakulinen, N.

(2011) FEBS J 278: 2283-2295

  • DOI: https://doi.org/10.1111/j.1742-4658.2011.08146.x
  • Primary Citation of Related Structures:  
    3PPS

  • PubMed Abstract: 

    Laccases are copper-containing enzymes used in various applications, such as textile bleaching. Several crystal structures of laccases from fungi and bacteria are available, but ascomycete types of fungal laccases (asco-laccases) have been rather unexplored, and to date only the crystal structure of Melanocarpus albomyces laccase (MaL) has been published. We have now solved the crystal structure of another asco-laccase, from Thielavia arenaria (TaLcc1), at 2.5 Å resolution. The loops near the T1 copper, forming the substrate-binding pockets of the two asco-laccases, differ to some extent, and include the amino acid thought to be responsible for catalytic proton transfer, which is Asp in TaLcc1, and Glu in MaL. In addition, the crystal structure of TaLcc1 does not have a chloride attached to the T2 copper, as observed in the crystal structure of MaL. The unique feature of TaLcc1 and MaL as compared with other laccases structures is that, in both structures, the processed C-terminus blocks the T3 solvent channel leading towards the trinuclear centre, suggesting a common functional role for this conserved 'C-terminal plug'. We propose that the asco-laccases utilize the C-terminal carboxylic group in proton transfer processes, as has been suggested for Glu498 in the CotA laccase from Bacillus subtilis. The crystal structure of TaLcc1 also shows the formation of a similar weak homodimer, as observed for MaL, that may determine the properties of these asco-laccases at high protein concentrations.


  • Organizational Affiliation

    Department of Chemistry, University of Eastern Finland, Joensuu, Finland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Laccase
A, B, C, D
604Canariomyces arenariusMutation(s): 0 
EC: 1.10.3.2
UniProt
Find proteins for F6N9E7 (Canariomyces arenarius)
Explore F6N9E7 
Go to UniProtKB:  F6N9E7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupF6N9E7
Glycosylation
Glycosylation Sites: 6
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E, G, H, J, K
E, G, H, J, K, M, N, Q
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
F
6N-Glycosylation
Glycosylation Resources
GlyTouCan:  G56014GC
GlyCosmos:  G56014GC
GlyGen:  G56014GC
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
I, P
5N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42227JK
GlyCosmos:  G42227JK
GlyGen:  G42227JK
Entity ID: 5
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
L, O
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
DA [auth B]
EA [auth B]
FA [auth B]
KA [auth C]
PA [auth D]
DA [auth B],
EA [auth B],
FA [auth B],
KA [auth C],
PA [auth D],
W [auth A],
X [auth A],
Y [auth A]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
CU
Query on CU

Download Ideal Coordinates CCD File 
AA [auth B]
BA [auth B]
CA [auth B]
GA [auth C]
HA [auth C]
AA [auth B],
BA [auth B],
CA [auth B],
GA [auth C],
HA [auth C],
IA [auth C],
JA [auth C],
LA [auth D],
MA [auth D],
NA [auth D],
OA [auth D],
R [auth A],
S [auth A],
T [auth A],
U [auth A],
Z [auth B]
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
OXY
Query on OXY

Download Ideal Coordinates CCD File 
V [auth A]OXYGEN MOLECULE
O2
MYMOFIZGZYHOMD-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.36α = 90
b = 178.95β = 90.26
c = 118.13γ = 90
Software Package:
Software NamePurpose
DNAdata collection
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-05-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-08-24
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2024-10-09
    Changes: Data collection, Database references, Structure summary