Escherichia coli cells expressing the tpm gene encoding the bacterial thiopurine methyltransferase (bTPMT) are shown to methylate selenite and (methyl)selenocysteine into dimethylselenide (DMSe) and dimethyldiselenide (DMDSe). E. coli cells expressing tpm from a gene library cosmid clone (harboring a Pseudomonas syringae insert of about 20 kb) also methylated selenate into DMSe and DMDSe. bTPMT is the first methyltransferase shown to be involved in the methylation of these selenium derivatives.
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http://dx.doi.org/10.1128/JB.184.11.3146-3149.2002 | DOI Listing |
Iran J Med Sci
August 2024
Nutrition Research Center, Department of Clinical Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Science, Shiraz, Iran.
BMC Gastroenterol
September 2023
Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Int J Mol Sci
May 2023
Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland.
Purine scaffolds constitute a starting point for the synthesis of numerous chemotherapeutics used in treating cancer, viruses, parasites, as well as bacterial and fungal infections. In this work, we synthesized a group of guanosine analogues containing an additional five-membered ring and a sulfur atom at the C-9 position. The spectral, photophysical, and biological properties of the synthesized compounds were investigated.
View Article and Find Full Text PDFGastroenterol Hepatol
May 2022
Digestive Disease Department, University of Valencia, Clinic University Hospital of Valencia, Valencia 46010, Spain.
The COVID-19 pandemic has been a challenge for countries and health professionals worldwide. Viral entry by ACE-2 receptor and an excessive activation of the immune system are key to understand both incidence and severity of disease. Inflammatory Bowel Disease (IBD) represents a special condition associated with an inordinate response of the immune system to external agents.
View Article and Find Full Text PDFJ Gastroenterol Hepatol
December 2021
Section of Gastroenterology and Hepatology, West Virginia University School of Medicine, Morgantown, West Virginia, USA.
Medications used in the treatment of inflammatory bowel disease cause a wide range of dermatologic side effects, and minimal guidance exists on how to manage them. The intention of this review article is to summarize common dermatologic adverse reactions related to inflammatory bowel disease therapy and to provide evidence-based guidance on management. We conducted a scoping review using PubMed and Google Scholar to identify studies reporting clinical information on dermatologic side effects of medications used in the treatment of inflammatory bowel disease.
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