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Merck
CN

75117

Laccase from Pleurotus ostreatus (mushroom)

≥4.0 U/mg

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About This Item

CAS Number:
UNSPSC Code:
12352204
EC Number:
420-150-4
MDL number:
EC Number:
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form

crystals, powder

specific activity

≥4.0 U/mg

storage temp.

−20°C

Application

Laccase is polyphenol oxidase found in many plants, fungi and microorganisms. Laccases may be useful in enzymatic biofuel systems, teeth whitening, textile dyeing, and in other applications that require the removal of oxygen .

Biochem/physiol Actions

Laccase is a blue copper oxidase that reduces molecular oxygen to water. Laccase oxidizes polyphenols, methoxy-substituted phenols and diamines, but not tyrosine. Oxidation by laccase is an one-electron reaction that generates a free radical . Laccase contains 4 copper atoms/molecule which are distributed in three different copper binding sites .

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

1 U corresponds to the amount of enzyme which converts 1 μmol of pyrocatechol per minute at pH 4.5 and 25°C

pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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G Palmieri et al.
The Journal of biological chemistry, 272(50), 31301-31307 (1998-02-12)
Two laccase isoenzymes (POXA1 and POXA2) produced by Pleurotus ostreatus were purified and fully characterized. POXA1 and POXA2 are monomeric glycoproteins with 3 and 9% carbohydrate content, molecular masses of about 61 and 67 kDa by sodium dodecyl sulfate polyacrylamide
The structure and function of fungal laccases
Christopher F. Thurston
Microbiology, 140, 19-26 (1994)
Applications of oxidoreductases: Recent progress.
Xu, Feng
Industrial Biotechnology (New Rochelle, N.Y.), 1, 38-50 (2005)
Noémie Lalaoui et al.
Chemical communications (Cambridge, England), 49(81), 9281-9283 (2013-09-03)
We report the functionalization of multi-walled carbon nanotube (MWCNT) electrodes by oxidative electropolymerization of pyrrole monomers bearing pyrene and N-hydroxysuccinimide groups. Both polymers were applied to the immobilization and electrical wiring of Trametes versicolor laccase via chemical grafting or non-covalent
Ngoc Han Tran et al.
Bioresource technology, 147, 667-671 (2013-09-17)
Numerous efforts have been made to remove emerging trace organic contaminants, such as pharmaceuticals and personal care products (PPCPs). This study examined the removal of N,N-diethyl-m-toluamide (DEET) by Trametes versicolor laccase and its laccase-mediator systems. Experimental results showed that DEET

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