Statistical and Biological Physics

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When two species interact and adapt their fitness, only the fitter species survives. This is the case for well-mixed systems, as well as for metapopulations, in which smaller subpopulations are coupled by mixing or mobility. We show that in the latter case, both species can coexist when the species adapt their fitness to the environment with a delay. more

Active transport by molecular motors along a filament is a vital process in cells. The motion of single motors has been studied in great detail and it has been shown that different species of motors often exhibit distinct stepping modes. For all super families of molecular motors (kinesins, dynein, and myosin) helical pathways with different pitches are probably the rule rather than the exception. But while their individual behavior is known in great detail, understanding their collective properties remains challenging. more