Physics – Biological Physics
Scientific paper
2008-01-15
European Physical Journal B, vol. 64, p. 593 (2008).
Physics
Biological Physics
9 pages, 11 figures; Based on the invited talk delivered by the first author (DC) at the IUPAP International Conference STATPH
Scientific paper
10.1140/epjb/e2008-00073-5
Molecular motors are macromolecular complexes which use some form of input energy to perform mechanical work. The filamentary tracks, on which these motors move, are made of either proteins (e.g., microtubules) or nucleic acids (DNA or RNA). Often, many such motors move simultaneously on the same track and their collective properties have superficial similarities with vehicular traffic on highways. The models we have developed provide ``unified'' description: in the low-density limit, a model captures the transport properties of a single motor while, at higher densities the same model accounts for the collective spatio-temporal organization of interacting motors. By drawing analogy with vehicular traffic, we have introduced novel quantities for characterizing the nature of the spatio-temporal organization of molecular motors on their tracks. We show how the traffic-like intracellular collective phenomena depend on the mechano-chemistry of the corresponding individual motors.
Basu Aakash
Chowdhury Debashish
Garai Ashok
Greulich Philip
Nishinari Katsuhiro
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