Comput Math Methods Med - Coarse-grained simulation of myosin-V movement.

Tópicos

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Resumo

We describe the development of a hierarchic modelling method applied to simulating the processive movement of the myosin-V molecular motor protein along an actin filament track. In the hierarchic model, three different levels of protein structure resolution are represented: secondary structure, domain, and protein, with the level of detail changing according to the degree of interaction among the molecules. The integrity of the system is maintained using a tree of spatially organised bounding volumes and distance constraints. Although applied to an actin-myosin system, the hierarchic framework is general enough so that it may easily be adapted to a number of other large biomolecular systems containing in the order of 100 proteins. We compared the simulation results with biophysical data, and despite the lack of atomic detail in our model, we find good agreement and can even suggest some refinements to the current model of myosin-V motion.

Resumo Limpo

describ develop hierarch model method appli simul process movement myosinv molecular motor protein along actin filament track hierarch model three differ level protein structur resolut repres secondari structur domain protein level detail chang accord degre interact among molecul integr system maintain use tree spatial organis bound volum distanc constraint although appli actinmyosin system hierarch framework general enough may easili adapt number larg biomolecular system contain order protein compar simul result biophys data despit lack atom detail model find good agreement can even suggest refin current model myosinv motion

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