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A laccase-producing white-rot fungi strain Ganoderma sp.En3 was newly isolated from the forest of Tzu-chin Mountain in China. Ganoderma sp.En3 had a strong ability of decolorizing four synthetic dyes, two simulated dye bath effluents and the real textile dye effluent. Induction in the activity of laccase during the decolorization process indicated that(More)
Omega-3 long-chain polyunsaturated fatty acids (LC-PUFAs) have received growing attention due to their significant roles in human health. Currently the main source of these nutritionally and medically important fatty acids is marine fish, which has not met ever-increasing global demand. Microorganisms are an important alternative source also being explored.(More)
Due to negative environmental influence and limited availability, petroleum-derived fuels need to be replaced by renewable biofuels. Biodiesel has attracted intensive attention as an important biofuel. Microalgae have numerous advantages for biodiesel production over many terrestrial plants. There are a series of consecutive processes for biodiesel(More)
Laccase is a copper-containing polyphenol oxidase that has great potential in industrial and biotechnological applications. Previous research has suggested that fungal laccase may be involved in the defense against oxidative stress, but there is little direct evidence supporting this hypothesis, and the mechanism by which laccase protects cells from(More)
Laccase is useful for various biotechnological and industrial applications. The white-rot fungus Trametes velutina 5930 and its laccase, isolated from the Shennongjia Nature Reserve in China by our laboratory, has great potential for practical application in environmental biotechnology. However, the original level of laccase produced by Trametes velutina(More)
Diacylglycerol acyltransferase (DGAT) plays a pivotal role in triacylglycerol (TAG) formation in some oleaginous organisms. We describe here the identification of a type 2 DGAT (PtDGAT2B) in the diatom Phaeodactylum tricornutum that contains four putative type 2 acyl-CoA:DGATs, sharing little sequence similarity with each other. TAG synthesis and lipid body(More)
The laccase gene lac48424-1 and its corresponding full-length cDNA were cloned and characterized from a novel white-rot fungi Trametes sp. 48424 which had the high yield of laccase and strong ability for decolorizing different dyes. The 1563 bp full-length cDNA of lac48424-1 encoded a mature laccase protein containing 499 amino acids preceded by a signal(More)
A novel expression system was established in the oleaginous yeast, Lipomyces kononenkoae. The expression vector pLK-rhPHG of L. kononenkoae was constructed and using the hygromycin phosphotransferase gene and green fluorescent protein gene as reporter genes. A delta 6-fatty acid desaturase gene (D6DM) from Cunninghamella echinulata MIAN6 was then expressed(More)
Alteration of lipid biosynthesis is one of important biochemical changes when oleaginous microalgae grow under varied environmental conditions. The effects of culture age and nutrient limitation on triacylglycerol (TAG) accumulation and fatty acid content were investigated in four eicosapentaenoic acid (EPA)-rich marine microalgae. The amounts of TAGs in(More)
Long-chain acyl-CoA synthetase (ACSL; EC catalyzes the conversion of free fatty acid to acyl-CoA ester, which is necessary for many pathways of fatty acid and lipid metabolism. The diatom Phaeodactylum tricornutum genome encodes five putative ACSLs (PtACSL1-5) that contain several highly conserved motifs and share limited sequence similarities with(More)