Tau-A/MAPT Protein, Macaca mulatta (HEK293, His)

Tau/MAPT Protein plays a crucial role in cellular dynamics by promoting microtubule assembly and stability, contributing to the establishment and maintenance of neuronal polarity. Its structural organization reveals a functional duality, with the C-terminus binding to axonal microtubules and the N-terminus engaging neural plasma membrane components. This arrangement suggests that tau serves as a linker protein, bridging the connection between microtubules and the plasma membrane in neurons. The localization of tau within the neuronal cell dictates axonal polarity, specifically in the region defined by the centrosome. Notably, the short isoforms offer cytoskeletal plasticity, while the longer isoforms likely play a preferential role in stabilization. Tau engages in a network of interactions with various proteins, including MARK1, MARK2, MARK3, MARK4, SQSTM1, PSMC2, FKBP4, CSNK1D, SGK1, PIN1, and LRRK2, illustrating its multifaceted involvement in cellular processes. Additionally, its interaction with LRP1, leading to endocytosis, highlights the intricate regulatory mechanisms governing tau's functional versatility.