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001-es BibID:	BIBFORM049587
Első szerző:	Virágh Máté
Cím:	Production of a defensin-like antifungal protein NFAP from Neosartorya fischeri in Pichia pastoris and its antifungal activity against filamentous fungal isolates from human infections / Máté Virágh, Dóra Vörös, Zoltán Kele, Laura Kovács, Ádám Fizil, Gergely Lakatos, Gergely Maróti, Gyula Batta, Csaba Vágvölgyi, László Galgóczy
Dátum:	2014
ISSN:	1046-5928
Megjegyzések:	Neosartorya fischeri NRRL 181 isolate secretes a defensin-like antifungal protein (NFAP) which has a remarkable antifungal effect against ascomycetous filamentous fungi. This protein is a promising antifungal agent of biotechnological value; however in spite of the available knowledge of the nature of its 50-upstream transcriptional regulation elements, the bulk production of NFAP has not been resolved yet. In this study we carried out its heterologous expression in the yeast Pichia pastoris and investigated the growth inhibition effect exerted by the heterologous NFAP (hNFAP) on filamentous fungal isolates from human infections compared with what was caused by the native NFAP. P. pastoris KM71H transformant strain harboring the pPICZalphaA plasmid with the mature NFAP encoding gene produced the protein. The final yield of the hNFAP was sixfold compared to the NFAP produced by N. fischeri NRRL 181. Based on the signal dispersion of the amide region, it was proven that the hNFAP exists in folded state. The purified hNFAP effectively inhibited the growth of fungal isolates belonging to the Aspergillus and to the Fusarium genus, but all investigated zygomycetous strain proved to be insusceptible. There was no significant difference between the growth inhibition effect exerted by the native and the heterologous NFAP. These data indicated that P. pastoris KM71H can produce the NFAP in an antifungally active folded state. Our results provide a base for further research, e.g., investigation the connection between the protein structure and the antifungal activity using site directed mutagenesis.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Neosartorya fischeri antifungal protein Pichia pastoris Antimicrobial susceptibility Clinical fungal isolates Ascomycetes Zygomycetes
Megjelenés:	Protein Expression and Purification 94 (2014), p. 79-84. -
További szerzők:	Vörös Dóra Kele Zoltán Kovács Laura Fizil Ádám (1988-) (biológus) Lakatos Gergely Maróti Gergely Batta Gyula (1953-) (molekula-szerkezet kutató) Vágvölgyi Csaba Galgóczy László (1950-)
Pályázati támogatás:	TÁMOP-4.2.4.A/2-11-1-2012-0001 TÁMOP PD 83355 OTKA
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