John O'Callaghan
John O'Callaghan
Senior Technical Officer - School of Microbiology University College Cork
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Genome sequence of Lactobacillus helveticus, an organism distinguished by selective gene loss and insertion sequence element expansion
M Callanan, P Kaleta, J O'Callaghan, O O'Sullivan, K Jordan, O McAuliffe, ...
Journal of bacteriology 190 (2), 727-735, 2008
A polyketide synthase gene required for ochratoxin A biosynthesis in Aspergillus ochraceus
J O'Callaghan, MX Caddick, ADW Dobson
Microbiology 149 (12), 3485-3491, 2003
Molecular cloning of a laccase isozyme gene from Pleurotus sajor-caju and expression in the heterologous Pichia pastoris host
DM Soden, J O’callaghan, ADW Dobson
Microbiology 148 (12), 4003-4014, 2002
PCR-based detection and quantification of mycotoxigenic fungi
SG Edwards, J O'CALLAGHAN, ADW Dobson
Mycological Research 106 (09), 1005-1025, 2002
Comparative genomics of lactic acid bacteria reveals a niche-specific gene set
O O'sullivan, J O'Callaghan, A Sangrador-Vegas, O McAuliffe, L Slattery, ...
BMC microbiology 9 (1), 50, 2009
Ochratoxin A biosynthetic genes in Aspergillus ochraceus are differentially regulated by pH and nutritional stimuli
J O’Callaghan, PC Stapleton, ADW Dobson
Fungal Genetics and Biology 43 (4), 213-221, 2006
Invited review: Lactobacillus helveticus—a thermophilic dairy starter related to gut bacteria
L Slattery, J O’Callaghan, GF Fitzgerald, T Beresford, RP Ross
Journal of dairy science 93 (10), 4435-4454, 2010
Optimisation of the expression of a Trametes versicolor laccase gene in Pichia pastoris
J O'callaghan, M O'brien, K McClean, ADW Dobson
Journal of industrial Microbiology and Biotechnology 29 (2), 55-59, 2002
Mechanism of protection of transepithelial barrier function by Lactobacillus salivarius: strain dependence and attenuation by bacteriocin production
E Miyauchi, J O'Callaghan, LF Buttó, G Hurley, S Melgar, S Tanabe, ...
American Journal of Physiology-Gastrointestinal and Liver Physiology 303 (9 …, 2012
Exposure of Bifidobacterium longum subsp. infantis to Milk Oligosaccharides Increases Adhesion to Epithelial Cells and Induces a Substantial Transcriptional Response
DW Kavanaugh, J O’Callaghan, LF Buttó, H Slattery, J Lane, M Clyne, ...
PLOS ONE 8 (6), e67224, 2013
Cloning and molecular characterization of Penicillium expansum genes upregulated under conditions permissive for patulin biosynthesis
S White, J O'Callaghan, ADW Dobson
FEMS microbiology letters 255 (1), 17-26, 2006
Cloning, sequence analysis and heterologous expression in Pichia pastoris of a gene encoding a thermostable cellobiose dehydrogenase from Myriococcum thermophilum
M Zámocký, C Schümann, C Sygmund, J O’Callaghan, ADW Dobson, ...
Protein expression and purification 59 (2), 258-265, 2008
Transcriptional response of HT-29 intestinal epithelial cells to human and bovine milk oligosaccharides
JA Lane, J O'Callaghan, SD Carrington, RM Hickey
British Journal of Nutrition 110 (12), 2127-2137, 2013
Metabolism of four α-glycosidic linkage-containing oligosaccharides by Bifidobacterium breve UCC2003
KJ O'Connell, MOC Motherway, J O'Callaghan, GF Fitzgerald, RP Ross, ...
Applied and environmental microbiology 79 (20), 6280-6292, 2013
Growth of Lactococcus lactis strains at low water activity: correlation with the ability to accumulate glycine betaine
J O’Callaghan, S Condon
International journal of food microbiology 55 (1-3), 127-131, 2000
Influence of adhesion and bacteriocin production by Lactobacillus salivarius on the intestinal epithelial cell transcriptional response
J O'Callaghan, LF Buttó, J MacSharry, K Nally, PW O'Toole
Applied and environmental microbiology 78 (15), 5196-5203, 2012
Lactobacillus: Host–Microbe Relationships
J O’Callaghan, PW O’Toole
Between Pathogenicity and Commensalism, 119-154, 2011
Functional characterization of the polyketide synthase gene required for ochratoxin A biosynthesis in Penicillium verrucosum
J O'Callaghan, A Coghlan, A Abbas, C García-Estrada, JF Martín, ...
International journal of food microbiology 161 (3), 172-181, 2013
Molecular cloning of the cellobiose dehydrogenase gene from Trametes versicolor and expression in Pichia pastoris
PC Stapleton, MM O’Brien, J O’Callaghan, ADW Dobson
Enzyme and microbial technology 34 (1), 55-63, 2004
The intestinal glycome and its modulation by diet and nutrition
D Kavanaugh, J O’Callaghan, M Kilcoyne, M Kane, L Joshi, RM Hickey
Nutrition reviews 73 (6), 359-375, 2015
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