Unicellular eukaryotes
نویسندگان
چکیده
منابع مشابه
Autophagy in unicellular eukaryotes.
Cells need a constant supply of precursors to enable the production of macromolecules to sustain growth and survival. Unlike metazoans, unicellular eukaryotes depend exclusively on the extracellular medium for this supply. When environmental nutrients become depleted, existing cytoplasmic components will be catabolized by (macro)autophagy in order to re-use building blocks and to support ATP pr...
متن کاملAnaerobic energy metabolism in unicellular photosynthetic eukaryotes.
Anaerobic metabolic pathways allow unicellular organisms to tolerate or colonize anoxic environments. Over the past ten years, genome sequencing projects have brought a new light on the extent of anaerobic metabolism in eukaryotes. A surprising development has been that free-living unicellular algae capable of photoautotrophic lifestyle are, in terms of their enzymatic repertoire, among the bes...
متن کاملThe evolution of organellar metabolism in unicellular eukaryotes.
Metabolic innovation has facilitated the radiation of microbes into almost every niche environment on the Earth, and over geological time scales transformed the planet on which we live. A notable example of innovation is the evolution of oxygenic photosynthesis which was a prelude to the gradual transformation of an anoxic Earth into a world with oxygenated oceans and an oxygen-rich atmosphere ...
متن کاملProtein arginine methyltransferases: from unicellular eukaryotes to humans.
Eukaryotic cells extend their polypeptide diversity beyond the constraints of the encoded amino acids by means of posttranslational modifications. These modifications regulate the stability, localization, activity, and probably other as-yet-uncharacterized protein functions. Methylated derivatives of arginines were identified 40 years ago from acidic lysates of nuclear extracts (69). However, t...
متن کاملRecovery of soil unicellular eukaryotes: an efficiency and activity analysis on the single cell level.
Eukaryotic unicellular organisms are an important part of the soil microbial community, but they are often neglected in soil functional microbial diversity analysis, principally due to the absence of specific investigation methods in the special soil environment. In this study we used a method based on high-density centrifugation to specifically isolate intact algal and yeast cells, with the ai...
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ژورنال
عنوان ژورنال: Nature
سال: 1974
ISSN: 0028-0836,1476-4687
DOI: 10.1038/249089b0