The C-terminus of stathmin-like proteins governs the stability of their complexes with tubulin
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS(2023)
摘要
Microtubule dynamics is modulated by many cellular factors including stathmin family proteins. Vertebrate stathmins sequester two alpha beta-tubulin heterodimers into a tight complex that cannot be incorporated in microtu-bules. Stathmins are regulated at the expression level during development and among tissues; they are also regulated by phosphorylation. Here, we study the dissociation kinetics of tubulin:stathmin assemblies in presence of different tubulin-binding proteins and identify a critical role of the C-terminus of the stathmin partner. Destabilizing this C-terminal region may represent an additional regulatory mechanism of the interaction with tubulin of stathmin proteins.
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关键词
CPAP,CopN,Fluorescence spectroscopy,Microtubule dynamics regulation,Stathmin-like RB3,Tubulin-binding proteins
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