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Purification and Characterization of a Novel Peroxidase from Geotrichum candidum Dec 1 Involved in Decolorization of Dyes
Abstract
A peroxidase (DyP) involved in the decolorization of dyes and produced by the fungus strain Geotrichum candidum Dec 1 was purified. DyP, a glycoprotein, is glycosylated with N -acetylglucosamine and mannose (17%) and has a molecular mass of 60 kDa and an isoelectric point (pI) of 3.8. The absorption spectrum of DyP exhibited a Soret band at 406 nm corresponding to a hemoprotein, and its Na 2 S 2 O 4 -reduced form revealed a peak at 556 nm that indicates the presence of a protoheme as its prosthetic group. Nine of the 21 types of dyes that were decolorized by Dec 1 cells were decolorized by DyP; in particular, anthraquinone dyes were highly decolorized. DyP also oxidized 2,6-dimethoxyphenol and guaiacol but not veratryl alcohol. The optimal temperature for DyP activity was 30°C, and DyP activity was stable even after incubation at 50°C for 11 h.
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Some of the by-products can inhibit the enzymatic action, thus limiting potential reusability of the enzymes.
“Also, some of the by-products can inhibit the enzymatic action 146, 159, 160 , thus limiting potential reusability of the enzymes.”
From Degradation of anthraquinone dyes from effluents: A review focusing on enzymatic dye degradation with industrial potential (2020) · cites this paper as [146]
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Metadata
- Authors
- Kim, S. J., & Shoda, M.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 1999-03
- Volume
- 65
- Issue
- 3
- Pages
- 1029-1035
- ISSN
- 0099-2240
- 1098-5336
- Cited by
- 274
- References
- 0
- Language
- en
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