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  • 1
    Publikationsdatum: 2019
    Beschreibung: 5-methylcytosine (m5C) is an abundant RNA modification that’s presence is reported in a wide variety of RNA species, including cytoplasmic and mitochondrial ribosomal RNAs (rRNAs) and transfer RNAs (tRNAs), as well as messenger RNAs (mRNAs), enhancer RNAs (eRNAs) and a number of non-coding RNAs. In eukaryotes, C5 methylation of RNA cytosines is catalyzed by enzymes of the NOL1/NOP2/SUN domain (NSUN) family, as well as the DNA methyltransferase homologue DNMT2. In recent years, substrate RNAs and modification target nucleotides for each of these methyltransferases have been identified, and structural and biochemical analyses have provided the first insights into how each of these enzymes achieves target specificity. Functional characterizations of these proteins and the modifications they install have revealed important roles in diverse aspects of both mitochondrial and nuclear gene expression. Importantly, this knowledge has enabled a better understanding of the molecular basis of a number of diseases caused by mutations in the genes encoding m5C methyltransferases or changes in the expression level of these enzymes.
    Digitale ISSN: 2073-4425
    Thema: Biologie
    Publiziert von MDPI
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2001-12-01
    Beschreibung: Marine reserves have been widely promoted as conservation and fishery management tools. There are robust demonstrations of conservation benefits, but fishery benefits remain controversial. We show that marine reserves in Florida (United States) and St. Lucia have enhanced adjacent fisheries. Within 5 years of creation, a network of five small reserves in St. Lucia increased adjacent catches of artisanal fishers by between 46 and 90%, depending on the type of gear the fishers used. In Florida, reserve zones in the Merritt Island National Wildlife Refuge have supplied increasing numbers of world record-sized fish to adjacent recreational fisheries since the 1970s. Our study confirms theoretical predictions that marine reserves can play a key role in supporting fisheries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, C M -- Bohnsack, J A -- Gell, F -- Hawkins, J P -- Goodridge, R -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1920-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA. cr10@york.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729316" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; Adult ; Aged ; Aged, 80 and over ; Animals ; Biomass ; Cnidaria/physiology ; Conservation of Natural Resources/*methods ; *Ecosystem ; Fisheries/*methods/statistics & numerical data ; *Fishes/physiology ; Florida ; Humans ; Middle Aged ; Saint Lucia ; Time Factors
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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