What is fungal laccase?

What is fungal laccase?

Laccases are enzymes widely distributed in plants, fungi, bacteria, and insects. They are multicopper oxidases that catalyze the transformation of aromatic and non-aromatic compounds with reduction of molecular oxygen to water.

What type of enzyme is laccase?

Laccases are the versatile enzymes which catalyze oxidation reactions coupled to four-electron reduction of molecular oxygen to water. They are multicopper enzymes which are widely distributed in higher plants and fungi. They are capable of degrading lignin and are present abundantly in many white-rot fungi.

How to find molar mass of fungal laccase?

Fungal laccase, a blue protein found in wood-rotting fungi, is 0.390\% Cu by mass. If a fungal laccase molecule contains 4 copper atoms, what is the molar mass of fungal laccase? Please provide the correct number of significant figures! M(molecule) = 65175.4 g/mol = 65.2*103 g/mol; Answer: 65.2*103 g/mol.

What is the function of laccase?

Laccase enzymes are secreted to the apoplast, where they catalyze the synthesis of lignin and regeneration of damaged plant tissues. Comparison of laccase biological functions in different organisms.

What produces laccase?

Laccase-Producing Fungi. Laccases are secreted by white-rot fungi along with other ligninolytic enzymes including manganese peroxidase, lignin peroxidase, and versatile peroxidase, although the specific types of enzymes secreted may differ with the fungus (Wong, 2009; Arora and Sharma, 2010).

What is the enzyme?

Enzymes (/ˈɛnzaɪmz/) are proteins that act as biological catalysts (biocatalysts). Catalysts accelerate chemical reactions. Like all catalysts, enzymes increase the reaction rate by lowering its activation energy. Some enzymes can make their conversion of substrate to product occur many millions of times faster.

How is laccase produced?

Laccases are generally produced during the secondary metabolism of different fungi. Several factors including type of cultivation (submerged or solid state), carbon limitation, nitrogen source, and concentration of microelements can influence laccase production [58].

Is Laccase a peroxidase?

Laccases (EC 1.10. The reactions catalyzed by laccases and peroxidases are very similar (17, 18, 20, 27). Both types of enzymes oxidize phenolic compounds and aromatic amines via one-electron oxidations, which creates radicals.

How is laccase made?

What is bacterial laccase?

Laccases (benzenediol: oxygen oxidoreductase, EC 1.10. 3.2) are multi-copper enzymes which catalyze the oxidation of a wide range of phenolic and non-phenolic aromatic compounds in the presence or absence of a mediator. The present review provides exhaustive information of bacterial laccases reported till date.

What are the characteristics of fungal laccases?

Fungal laccases are multicopper oxidases with high catalytic versatility and low catalytic requirements (only O2 of the air is required for activation). Their high redox potential, especially of certain basidiomycete laccases, significantly increases their oxidation capacity compared to bacterial laccases.

What is the molecular weight of laccase?

Laccase PubChem CID 3013170 Structure Find Similar Structures Molecular Formula C44H69N11O20 Synonyms Laccase Hericium erinaceum laccase (2S)- Molecular Weight 1072.1

What is laccase used for in pulp and paper?

Laccase is a robust oxidoreductase enzyme with a broad substrate range [1]. The predominant role played by laccase in pulp and paper research has been as an enzyme to be potentially employed for biologically bleaching kraft pulps. Laccase in combination with mediator compounds (LMS) has been shown to delignify kraft pulps

Can laccase be used as a bleaching enzyme?

Laccase is a robust oxidoreductase enzyme with a broad substrate range [1 ]. The predominant role played by laccase in pulp and paper research has been as an enzyme to be potentially employed for biologically bleaching kraft pulps. Laccase in combination with mediator compounds (LMS) has been shown to delignify kraft pulps [ 2 ].