The sequence of Endo T is covered by three EST sequences assembled into contig 1062 [supporting information in Foreman et al. (2003)]. These were not identified as transcriptionally regulated in response to sophorose, lactose or glucose. The biological role of this deglycosylating enzyme secreted by the filamentous fungus T. reesei described in this communication is still unclear. It could be a tool for hydrolysis of the oligosaccharide-protective Regorafenib chemical structure coat from foreign N-glycosyl proteins, thus providing amino acids and peptides for
nutritional purposes [as observed for ENGases with bacteria (Collin & Olsén, 2001) and for chitinases with the parasite T. harzianum (Gooday et al., 1992)]. Another possibility is that some oligosaccharides are released, which can act as biological signals (as observed with Myxococcus xanthus; Barreaud et al., 1995). We are indebted to Ing. Griet Debyser and to Ing. Isabel Vandenberghe for the internal and N-terminal sequence determination and to Ing. J. Lamote and Ing. J. Devlamynck for practical assistance (the Laboratory for Protein Biochemistry and Biomolecular Engineering). B.S. is a postdoctoral fellow of the Fund for
Scientific Research-Flanders (F.W.O.-Vlaanderen, Belgium). K.S. Selleck ABT 737 was funded by a PhD grant from the Institute for the Promotion of Innovation through Science and Technology in Flanders Histamine H2 receptor (I.W.T.-Vlaanderen). K.H. is funded
by a PhD grant from the University College Ghent. Magnaporthe grisea GUY II and G. zeae were a kind gift from Prof. M. Höfte (FTBW, Ghent University, Belgium) and Prof. G. Haesaert (BIOT, University College Ghent, Belgium), respectively. Trichoderma reeseiα(12)-mannosidase was donated by Prof. Dr R. Contreras group (VIB, Belgium) and Endo H from S. plicatus was supplied by Dr C. Mitchinson from Genencor Int., Palo Alto, CA. “
“The causative agent of paratuberculosis in ruminants, Mycobacterium avium subsp. paratuberculosis (MAP), although still a matter of debate, has been linked with Crohn’s and other human diseases. The availability of rapid methods for assessing the viability of MAP cells in food, in particular milk, could be of great use for risk management in food safety. MAP viability is generally assessed using culture techniques that require prolonged incubation periods for the growth of MAP. To differentiate between viable and nonviable MAP cells in milk samples, this study explores the combination of two already described techniques: peptide magnetic bead separation followed by Propidium Monoazide qPCR. Using an Ordinal Multinomial Logistic Regression model to analyze the results obtained after spiking milk samples with mixtures containing different percentages of viable/dead cells, we were able to assess the probability of the viability status of MAP found in milk.