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The gcm-motif: a novel DNA-binding motif conserved in Drosophila and mammals.
In the Drosophila nervous system, the glial cells missing gene (gcm) is transiently expressed in glial precursors to switch their fate from the neuronal default to glia. It encodes a novel 504-aminoExpand
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The Path from the RNA World
Abstract. We describe a sequential (step by step) Darwinian model for the evolution of life from the late stages of the RNA world through to the emergence of eukaryotes and prokaryotes. The startingExpand
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RNRdb, a curated database of the universal enzyme family ribonucleotide reductase, reveals a high level of misannotation in sequences deposited to Genbank
BackgroundRibonucleotide reductases (RNRs) catalyse the only known de novo pathway for deoxyribonucleotide synthesis, and are therefore essential to DNA-based life. While ribonucleotide reduction hasExpand
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Comparative Genomic Evidence for a Complete Nuclear Pore Complex in the Last Eukaryotic Common Ancestor
Background The Nuclear Pore Complex (NPC) facilitates molecular trafficking between nucleus and cytoplasm and is an integral feature of the eukaryote cell. It exhibits eight-fold rotational symmetryExpand
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Ribonucleotide reduction - horizontal transfer of a required function spans all three domains
BackgroundRibonucleotide reduction is the only de novo pathway for synthesis of deoxyribonucleotides, the building blocks of DNA. The reaction is catalysed by ribonucleotide reductases (RNRs), anExpand
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Algal genomes reveal evolutionary mosaicism and the fate of nucleomorphs
Cryptophyte and chlorarachniophyte algae are transitional forms in the widespread secondary endosymbiotic acquisition of photosynthesis by engulfment of eukaryotic algae. Unlike most secondaryExpand
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The origin of eukaryotes and their relationship with the Archaea: are we at a phylogenomic impasse?
The origin of eukaryotes and their evolutionary relationship with the Archaea is a major biological question and the subject of intense debate. In the context of the classical view of the universalExpand
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Relics from the RNA World
Abstract. An RNA world is widely accepted as a probable stage in the early evolution of life. Two implications are that proteins have gradually replaced RNA as the main biological catalysts and thatExpand
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A Metagenomics Transect into the Deepest Point of the Baltic Sea Reveals Clear Stratification of Microbial Functional Capacities
The Baltic Sea is characterized by hyposaline surface waters, hypoxic and anoxic deep waters and sediments. These conditions, which in turn lead to a steep oxygen gradient, are particularly evidentExpand
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Evaluating hypotheses for the origin of eukaryotes.
  • A. Poole, D. Penny
  • Biology, Medicine
  • BioEssays : news and reviews in molecular…
  • 2007
Numerous scenarios explain the origin of the eukaryote cell by fusion or endosymbiosis between an archaeon and a bacterium (and sometimes a third partner). We evaluate these hypotheses using theExpand
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