6TRM

Solution structure of the antifungal protein PAFC


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Solution Structure, Dynamics, and New Antifungal Aspects of the Cysteine-Rich Miniprotein PAFC.

Czajlik, A.Holzknecht, J.Galgoczy, L.Toth, L.Poor, P.Ordog, A.Varadi, G.Kuhbacher, A.Borics, A.Toth, G.K.Marx, F.Batta, G.

(2021) Int J Mol Sci 22

  • DOI: https://doi.org/10.3390/ijms22031183
  • Primary Citation of Related Structures:  
    6TRM

  • PubMed Abstract: 
  • The genome of Penicillium chrysogenum Q176 contains a gene coding for the 88-amino-acid (aa)-long glycine- and cysteine-rich P. chrysogenum antifungal protein C (PAFC). After maturation, the secreted antifungal miniprotein (MP) comprises 64 aa and shares 80% aa identity with the bubble protein (BP) from Penicillium brevicompactum , which has a published X-ray structure ...

    The genome of Penicillium chrysogenum Q176 contains a gene coding for the 88-amino-acid (aa)-long glycine- and cysteine-rich P. chrysogenum antifungal protein C (PAFC). After maturation, the secreted antifungal miniprotein (MP) comprises 64 aa and shares 80% aa identity with the bubble protein (BP) from Penicillium brevicompactum , which has a published X-ray structure. Our team expressed isotope ( 15 N, 13 C)-labeled, recombinant PAFC in high yields, which allowed us to determine the solution structure and molecular dynamics by nuclear magnetic resonance (NMR) experiments. The primary structure of PAFC is dominated by 14 glycines, and therefore, whether the four disulfide bonds can stabilize the fold is challenging. Indeed, unlike the few published solution structures of other antifungal MPs from filamentous ascomycetes, the NMR data indicate that PAFC has shorter secondary structure elements and lacks the typical β-barrel structure, though it has a positively charged cavity and a hydrophobic core around the disulfide bonds. Some parts within the two putative γ-core motifs exhibited enhanced dynamics according to a new disorder index presentation of 15 N-NMR relaxation data. Furthermore, we also provided a more detailed insight into the antifungal spectrum of PAFC, with specific emphasis on fungal plant pathogens. Our results suggest that PAFC could be an effective candidate for the development of new antifungal strategies in agriculture.


    Organizational Affiliation

    Department of Organic Chemistry, Faculty of Science and Technology, University of Debrecen, H-4032 Debrecen, Hungary.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Pc21g12970 proteinA64Penicillium rubens Wisconsin 54-1255Mutation(s): 0 
Gene Names: Pc21g12970PCH_Pc21g12970
UniProt
Find proteins for B6HMF2 (Penicillium rubens (strain ATCC 28089 / DSM 1075 / NRRL 1951 / Wisconsin 54-1255))
Explore B6HMF2 
Go to UniProtKB:  B6HMF2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB6HMF2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Regional Development FundHungaryGINOP-2.3.2-15-2016-00008
European Regional Development FundHungaryGINOP-2.3.3-15-2016-00004
Austrian Science FundAustriaFWF I3132-B21

Revision History  (Full details and data files)

  • Version 1.0: 2020-10-28
    Type: Initial release
  • Version 1.1: 2021-02-10
    Changes: Database references
  • Version 1.2: 2021-06-23
    Changes: Data collection