منابع مشابه
Traversing the mountaintop: world fossil fuel production to 2050.
During the past century, fossil fuels--petroleum liquids, natural gas and coal--were the dominant source of world energy production. From 1950 to 2005, fossil fuels provided 85-93% of all energy production. All fossil fuels grew substantially during this period, their combined growth exceeding the increase in world population. This growth, however, was irregular, providing for rapidly growing p...
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The simplest possible beginning of abiogenesis has been a riddle from the last century, which is most successfully solved by the Lipid World hypothesis. However, origin of the next stages of evolution starting form lipids is still in dark. We propose a ‘Lipid-RNA World Scenario’ based on the assumption that modern stable lipid-RNA interactions are molecular fossils of an ancient stage of evolut...
متن کاملThe small RNA world.
Small RNAs have burst on the scene as ubiquitous, versatile repressors of gene expression in plants, animals and many fungi. These tiny RNAs (~21-26 nt), which induce silencing through homologous sequence interactions, come in many guises: short interfering (si) RNAs (Elbashir et al., 2001), small temporal (st) RNAs (Pasquinelli et al., 2000), heterochromatic siRNAs (Reinhart and Bartel, 2002),...
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Zigzag pocket machining (or 2D-milling) plays an important role in the manufacturing industry. The objective is to minimize the number of tool retractions in the zigzag machining path for a given pocket (i.e., a planar domain). We give an optimal linear time dynamic programming algorithm for simply connected pockets, and a linear plus O(1) time optimal algorithm for pockets with h holes. If the...
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For nearly thirty years, nucleic acid biochemists have dreamed of a very special RNA molecule, still hypothetical, which is thought to have played a key role in the early history of life on earth and may enable the production of life in the laboratory. That molecule is an RNA enzyme, or ribozyme, with the ability to catalyze the replication of RNA molecules, including copies of itself. All know...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2017
ISSN: 0021-9258
DOI: 10.1074/jbc.x117.789065