Identification, Heterologous Expression and Characterization of a Dye-decolorizing Peroxidase of Pleurotus Sapidus
Overview
Authors
Affiliations
The coding sequence of a peroxidase from the secretome of Pleurotus sapidus was cloned from a cDNA library. Bioinformatic analyses revealed an open reading frame of 1551 bp corresponding to a primary translation product of 516 amino acids. The DyP-type peroxidase was heterologously produced in Trichoderma reesei with an activity of 55,000 U L. The enzyme was purified from the culture supernatant, biochemically characterized and the kinetic parameters were determined. The enzyme has an N-terminal signal peptide composed of 62 amino acids. Analysis by Blue Native PAGE and activity staining with ABTS, as well as gel filtration chromatography showed the native dimeric state of the enzyme (115 kDa). Analysis of the substrate range revealed that the recombinant enzyme catalyzes, in addition to the conversion of some classic peroxidase substrates such as 2,2'-azino-bis(3-ethylthiazoline-6-sulfonate) and substituted phenols like 2,6-dimethoxyphenol, also the decolorization of the anthraquinonic dye Reactive Blue 5. The enzyme also catalyzes bleaching of natural colorants such as β-carotene and annatto. Surprisingly, β-carotene was transformed in the presence and absence of HO by rPsaDyP, however enzyme activity was increased by the addition of HO. This indicates that the rPsaDyP has an oxidase function in addition to a peroxidase activity. As a consequence of the high affinity to the characteristic substrate Reactive Blue 5 the rPsaDyP belongs functionally to the dyp-type peroxidase family.
Characterization of the DyP for Its Potential to Biotransform Various Fluoroquinolones.
Staita K, Akrout I, Lambert J, Turbe-Doan A, Lomascolo A, Faulds C Int J Mol Sci. 2024; 25(21).
PMID: 39518944 PMC: 11546867. DOI: 10.3390/ijms252111392.
Characterization of a GDS(L)-like hydrolase from Pleurotus sapidus with an unusual SGNH motif.
Fingerhut M, Henrich L, Lauber C, Broel N, Ghezellou P, Karrer D AMB Express. 2024; 14(1):98.
PMID: 39225819 PMC: 11372007. DOI: 10.1186/s13568-024-01752-x.
Isola D, Lee H, Chung Y, Zucconi L, Pelosi C J Fungi (Basel). 2024; 10(5).
PMID: 38786721 PMC: 11122135. DOI: 10.3390/jof10050366.
Pupart H, Vastsjonok D, Lukk T, Valjamae P ACS Omega. 2024; 9(3):3866-3876.
PMID: 38284010 PMC: 10809370. DOI: 10.1021/acsomega.3c07963.
Production of an Anise- and Woodruff-like Aroma by Monokaryotic Strains of Grown on Side Streams.
Burger F, Koch M, Fraatz M, Omarini A, Berger R, Zorn H Molecules. 2022; 27(3).
PMID: 35163915 PMC: 8838675. DOI: 10.3390/molecules27030651.