complex(a(GO:"cell surface"), a(HBP:"Tau aggregates"))
However, regardless of the multiple “sizes” of tau aggregates that interact with the cell surface via HSPGs, it is likely that an assembly of at least three tau molecules is required to initiate endocytosis via HSPGs (Mirbaha et al., 2015) PubMed:28420982
Basically, pathogenic tau aggregates use HSPGs to bind the cell surface of a neuron. This actively stimulates macropinocytosis, leading to propagation of aggregates between cells in culture and aggregate uptake in vivo (Holmes et al., 2013) PubMed:28420982
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If you find BEL Commons useful in your work, please consider citing: Hoyt, C. T., Domingo-Fernández, D., & Hofmann-Apitius, M. (2018). BEL Commons: an environment for exploration and analysis of networks encoded in Biological Expression Language. Database, 2018(3), 1–11.