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Stem-loop hairpins formed by mitochondrial light strand replication origins (OL) and by heavy strand DNA coding for tRNAs that form OL-like structures initiate mitochondrial replication. The loops are recognized by one of the two active sites of the vertebrate mitochondrial gamma polymerase,...
Prevalence of cooperation within groups of selfish individuals is puzzling in that it contradicts with the basic premise of natural selection. Favoring players with higher fitness, the latter is key for understanding the challenges faced by cooperators when competing with defectors. Evolutionary...
Glycolytic oscillations occur in many cell types and have been intensively studied in yeast. Recent experimental and theoretical research has been focussed on the oscillatory dynamics and the synchronisation mechanism in stirred yeast cell suspensions. Here we are interested in the...
Activation of the transcription factor NF-κB is central to control of immune and inflammatory responses. Cytokine induced activation through the classical or canonical pathway relies on degradation of the inhibitor, IκBα and regulation by the IKKβ kinase. In addition, the NF-κB is activated...
Actuarial senescence is characterized by an increase in mortality rate with increasing chronological age. The reliability theory of senescence proposes that organisms’ vital functions can be modelled as a suite of damageable, irreplaceable elements (typically genes or their products) that...
A kinetic analysis and simulation of the replication reactions of two competing replicators—one non-metabolic (thermodynamic), the other metabolic, are presented. Our analysis indicates that in a rich resource environment the non-metabolic replicator is likely to be kinetically selected for...
The adaptive relationship with the environment is a sine qua non condition for any intelligent system. Discussions on the nature of cellular intelligence, however, have not systematically pursued yet the question of whether there is a fundamental way of sensing the environment, which may...
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