Jacques Georis

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AIMS Laccase production by the monokaryotic strain Pycnoporus cinnabarinus ss3 was studied using ethanol as inducer in the culture medium. METHODS AND RESULTS The effect of ethanol was tested at 10, 20, 30, 35 and 45 g l-1 and compared with that of ferulic acid, known until now as the most efficient inducer for laccase expression by P. cinnabarinus ss3.(More)
Two genes encoding family 11 endo-(1,4)-β-xylanases from Penicillium griseofulvum (PgXynA) and Penicillium funiculosum (PfXynC) were heterologously expressed in Escherichia coli as glutathione S-transferase fusion proteins, and the recombinant enzymes were purified after affinity chromatography and proteolysis. PgXynA and PfXynC were identical to their(More)
An Antarctic soil metagenomic library was screened for lipolytic enzymes and allowed for the isolation of a new cytosolic esterase from the a/b hydrolase family 6, named MHlip. This enzyme is related to hypothetical genes coding esterases, aryl-esterases and peroxydases, among others. MHlip was produced, purified and its activity was determined. The(More)
The effects of the addition of ferulic acid and ethanol in P. cinnabarinus ss3 culture medium in fermentor were compared in 15-L fermentor. In the presence of 30 g l(-1) ethanol, laccase activity (270,000 U/L1) was 3-fold higher as compared with ferulic acid-induced cultures, and 150-fold higher as compared with non-induced cultures, respectively.(More)
Penicillium griseofulvum possesses two endo-(1,4)-beta-xylanase genes, PgXynA and PgXynB, belonging to family 11 glycoside hydrolases. The enzymes share 69% identity, a similar hydrolysis profile i.e. the predominant production of xylobiose and xylotriose as end products from wheat arabinoxylan and a specificity region of six potential xylose subsites, but(More)
Penicillium griseofulvum xylanase (PgXynA) belongs to family 11 glycoside hydrolase. It exhibits unique amino acid features but its three-dimensional structure is not known. Based upon the X-ray structure of Penicillium funiculosum xylanase (PfXynC), we generated a three-dimensional model of PgXynA by homology modeling. The native structure of PgXynA(More)
We report a case of a 71-year-old woman with carcinoid heart disease admitted in ICU after tricuspid valve replacement. She quickly developed a acute heart right failure. Optimal medical treatment failed and we implanted ventricular assistance. After 10 days of support, patient improved and the right ventricle recovered. Temporary devices can provide a(More)
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