Results 51 to 60 of about 4,711 (225)
Passive endocytosis in model protocells
Proceedings of the National Academy of Sciences, 2023 AbstractSemipermeable membranes are a key feature of all living organisms. While specialized membrane transporters in cells can import otherwise impermeable nutrients, the earliest cells would have lacked a mechanism to import nutrients rapidly under nutrient-rich circumstances.
Stephanie J. Zhang +6 more
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Selfishness versus functional cooperation in a stochastic protocell model [PDF]
, 2010 How to design an "evolvable" artificial system capable to increase in complexity? Although Darwin's theory of evolution by natural selection obviously offers a firm foundation, little hope of success seems to be expected from the explanatory adequacy of ...
Agresti +56 more
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Life, 2014 For reconstruction of controlled cell division in a minimal cell model, or protocell, a positioning mechanism that spatially regulates division is indispensable.
Simon Kretschmer, Petra Schwille
doaj +1 more source
The Effect of Environment on the Evolution and Proliferation of Protocells of Increasing Complexity
Life, 2022 The formation, growth, division and proliferation of protocells containing RNA strands is an important step in ensuring the viability of a mixed RNA–lipid world.
Suvam Roy, Supratim Sengupta
doaj +1 more source
RNA catalysis in model protocell vesicles. [PDF]
, 2005 We are engaged in a long-term effort to synthesize chemical systems capable of Darwinian evolution, based on the encapsulation of self-replicating nucleic acids in self-replicating membrane vesicles.
Chen, Irene A +2 more
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Life, 2017 One of the key steps in the origins of life was the formation of a membrane to separate protocells from their environment. These membranes are proposed to have been formed out of single chain amphiphiles, which are less stable than the dialkyl lipids ...
Sarah Maurer
doaj +1 more source
Life, 2021 Metal ions strongly affect the self-assembly and stability of membranes composed of prebiotically relevant amphiphiles (protoamphiphiles). Therefore, evaluating the behavior of such amphiphiles in the presence of ions is a crucial step towards assessing ...
Manesh Prakash Joshi +3 more
doaj +1 more source
Protocells Either Synchronize or Starve. [PDF]
Entropy (Basel)Two different processes take place in self-reproducing protocells, i.e., (i) cell reproduction by fission and (ii) duplication of the genetic material. One major problem is indeed that of assuring that the two processes take place at the same pace, i.e., that they synchronize, which is a necessary condition for sustainable growth.
Villani M, Serra R.
europepmc +5 more sources
Origin of Species before Origin of Life: The Role of Speciation in Chemical Evolution
Life, 2021 Speciation, an evolutionary process by which new species form, is ultimately responsible for the incredible biodiversity that we observe on Earth every day.
Tony Z. Jia +2 more
doaj +1 more source
Scientific iconoclasm and active imagination: synthetic cells as techo-schientific mandalas [PDF]
, 2018 Metaphors allow us to come to terms with abstract and complex information, by comparing it to something which is structured, familiar and concrete. Although modern science is “iconoclastic”, as Gaston Bachelard phrases it, scientists are at the same time
Zwart, Hub
core +3 more sources