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- W4366083954 abstract "Slow axonal transport (SAT) moves multiple proteins from the soma, where they are synthesized, to the axon terminal. Due to the great lengths of axons, SAT almost exclusively relies on active transport, which is driven by molecular motors. The puzzling feature of slow axonal transport is its bidirectionality. Although the net direction of SAT is anterograde, from the soma to the terminal, experiments show that it also contains a retrograde component. One of the proteins transported by SAT is the microtubule-associated protein tau. To better understand why the retrograde component in tau transport is needed, we used the perturbation technique to analyze how the full tau SAT model can be simplified for the specific case when retrograde motor-driven transport and diffusion-driven transport of tau are negligible and tau is driven only by anterograde (kinesin) motors. The solution of the simplified equations shows that without retrograde transport the tau concentration along the axon length stays almost uniform (decreases very slightly), which is inconsistent with the experimenal tau concentration at the outlet boundary (at the axon tip). Thus kinesin-driven transport alone is not enough to explain the empirically observed distribution of tau, and the retrograde motor-driven component in SAT is needed." @default.
- W4366083954 created "2023-04-19" @default.
- W4366083954 creator A5008465009 @default.
- W4366083954 creator A5075453637 @default.
- W4366083954 date "2023-04-17" @default.
- W4366083954 modified "2023-10-18" @default.
- W4366083954 title "Why slow axonal transport is bidirectional – can axonal transport of tau protein rely only on motor-driven anterograde transport?" @default.
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- W4366083954 doi "https://doi.org/10.1080/10255842.2023.2197541" @default.
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