Pichia Anomala DBVPG 3003 Secretes a Ubiquitin-like Protein That Has Antimicrobial Activity
Overview
Microbiology
Affiliations
The yeast strain Pichia anomala DBVPG 3003 secretes a killer toxin (Pikt) that has antifungal activity against Brettanomyces/Dekkera sp. yeasts. Pikt interacts with beta-1,6-glucan, consistent with binding to the cell wall of sensitive targets. In contrast to that of toxin K1, secreted by Saccharomyces cerevisiae, Pikt killer activity is not mediated by an increase in membrane permeability. Purification of the toxin yielded a homogeneous protein of about 8 kDa, which showed a marked similarity to ubiquitin in terms of molecular mass and N-terminal sequences. Pikt is also specifically recognized by anti-bovine ubiquitin antibodies and, similar to ubiquitin-like peptides, is not absorbed by DEAE-cellulose. However, Pikt differs from ubiquitin in its sensitivity to proteolytic enzymes. Therefore, Pikt appears to be a novel ubiquitin-like peptide that has killer activity.
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Amorim-Rodrigues M, Brandao R, Cassio F, Lucas C Front Fungal Biol. 2024; 5:1463860.
PMID: 39355316 PMC: 11443700. DOI: 10.3389/ffunb.2024.1463860.
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Roessler K, Friedlander M, VanSickle M, Rush C Microbiol Spectr. 2024; 12(10):e0044424.
PMID: 39162504 PMC: 11448421. DOI: 10.1128/spectrum.00444-24.
Bio-protection in oenology by : from field results to scientific inquiry.
Puyo M, Simonin S, Bach B, Klein G, Alexandre H, Tourdot-Marechal R Front Microbiol. 2023; 14:1252973.
PMID: 37664122 PMC: 10469929. DOI: 10.3389/fmicb.2023.1252973.
Branco P, Mauricio E, Costa A, Ventura D, Roma-Rodrigues C, Duarte M Antibiotics (Basel). 2023; 12(8).
PMID: 37627752 PMC: 10451726. DOI: 10.3390/antibiotics12081332.
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Comitini F, Canonico L, Agarbati A, Ciani M Microorganisms. 2023; 11(6).
PMID: 37374952 PMC: 10303170. DOI: 10.3390/microorganisms11061450.