Crystal structure of the extralong fungal manganese peroxidase from Ceriporiopsis subvermispora in complex with manganese

Experimental Data Snapshot

  • Resolution: 1.20 Å
  • R-Value Free: 0.154 
  • R-Value Work: 0.139 
  • R-Value Observed: 0.140 

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Structural Implications of the C-Terminal Tail in the Catalytic and Stability Properties of Manganese Peroxidases from Ligninolytic Fungi

Fernandez-Fueyo, E.Acebes, S.Ruiz-Duenas, F.J.Martinez, M.J.Romero, A.Medrano, F.J.Guallar, V.Martinez, A.T.

(2014) Acta Crystallogr D Biol Crystallogr 70: 3253

  • DOI: https://doi.org/10.1107/S1399004714022755
  • Primary Citation of Related Structures:  
    4CZN, 4CZO, 4CZP, 4CZQ, 4CZR

  • PubMed Abstract: 

    The genome of Ceriporiopsis subvermispora includes 13 manganese peroxidase (MnP) genes representative of the three subfamilies described in ligninolytic fungi, which share an Mn(2+)-oxidation site and have varying lengths of the C-terminal tail. Short, long and extralong MnPs were heterologously expressed and biochemically characterized, and the first structure of an extralong MnP was solved. Its C-terminal tail surrounds the haem-propionate access channel, contributing to Mn(2+) oxidation by the internal propionate, but prevents the oxidation of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS), which is only oxidized by short MnPs and by shortened-tail variants from site-directed mutagenesis. The tail, which is anchored by numerous contacts, not only affects the catalytic properties of long/extralong MnPs but is also associated with their high acidic stability. Cd(2+) binds at the Mn(2+)-oxidation site and competitively inhibits oxidation of both Mn(2+) and ABTS. Moreover, mutations blocking the haem-propionate channel prevent substrate oxidation. This agrees with molecular simulations that position ABTS at an electron-transfer distance from the haem propionates of an in silico shortened-tail form, while it cannot reach this position in the extralong MnP crystal structure. Only small differences exist between the long and the extralong MnPs, which do not justify their classification as two different subfamilies, but they significantly differ from the short MnPs, with the presence/absence of the C-terminal tail extension being implicated in these differences.

  • Organizational Affiliation

    Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
EXTRALONG MANGANESE PEROXIDASE369Gelatoporia subvermisporaMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.20 Å
  • R-Value Free: 0.154 
  • R-Value Work: 0.139 
  • R-Value Observed: 0.140 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 108.45α = 90
b = 108.45β = 90
c = 68.53γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata 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: 2014-12-10
    Type: Initial release
  • Version 1.1: 2014-12-17
    Changes: Database references
  • Version 1.2: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description