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Direct repeats found in the vicinity of intron splice sites.
Naturwissenschaften
January 2025
Department of Biology, University of Washington, Seattle, WA, 98195, USA.
Four main classes of introns (group I, group II, spliceosomal, and archaeal) have been reported for all major types of RNA from nuclei and organelles of a wide range of taxa. When and how introns inserted within the genic regions of genomes, however, is often unclear. Introns were examined from Archaea, Bacteria, and Eukarya.
View Article and Find Full Text PDFA plasmid with the gene enhances the fitness of strains under laboratory conditions.
Microbiology (Reading)
January 2025
Instituto de Microbiologa, Colegio de Ciencias Biolgicas y Ambientales, Universidad San Francisco de Quito, Quito, Ecuador.
Antimicrobial resistance (AMR) is a major threat to global public health that continues to grow owing to selective pressure caused by the use and overuse of antimicrobial drugs. Resistance spread by plasmids is of special concern, as they can mediate a wide distribution of AMR genes, including those encoding extended-spectrum -lactamases (ESBLs). The CTX-M family of ESBLs has rapidly spread worldwide, playing a large role in the declining effectiveness of third-generation cephalosporins.
View Article and Find Full Text PDFActivation and Catalysis of Methane over Metal-Organic Framework Materials.
Acc Mater Res
January 2025
Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
Methane (CH), which is the main component of natural gas, is an abundant and widely available carbon resource. However, CH has a low energy density of only 36 kJ L under ambient conditions, which is significantly lower than that of gasoline (. 34 MJ L).
View Article and Find Full Text PDFMicrobiome and Colorectal Cancer in Humans: A Review of Recent Studies.
J Anus Rectum Colon
January 2025
Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan.
The tumor microenvironment has recently been well-studied in various gastrointestinal cancers, including colorectal cancer (CRC). The gut microbiota, a collection of microorganisms in the human gastrointestinal tract, is one of the microenvironments associated with colon carcinogenesis. It has been challenging to elucidate the mechanisms by which gut microbiota contributes to carcinogenesis and cancer progression due to complex interactions with the host, including its metabolites and immune and inflammatory responses.
View Article and Find Full Text PDFOrigin and pathogenicity variation of in China.
Front Microbiol
January 2025
Center for Viticulture and Enology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
Grapevine downy mildew caused by (Pv) is one of the most devastating diseases of grapevine in China. To understand the origin and pathogenicity of Chinese Pv, a total of 193 single-sporangiophore isolates were obtained from 14 Chinese major viticulture areas. Phylogenetic analyses suggest that Chinese Pv isolates originate from North America and belong to the clade .
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