Tubulin Heterodimers
Tubulin Heterodimers - Related Videos
02:40
Second Harmonic Generation Imaging in a Rat Model to Study Tubulin Defects
0 Views •
2025
Source: Piazza, V., et al., Label-Free Non-Linear Optics for the Study of Tubulin-Dependent Defects in Central Myelin. J. Vis. Exp. (2023)This video demonstrates the procedure for imaging microtubule abnormalities in a rat brain tissue slice using a two-photon excitation microscope. It employs second harmonic generation (SHG) signals to detect tubulin defects and reduced myelin production.
06:30
Optimizing Tubulin Yield from Porcine Brain Tissue
0 Views •
2024
This protocol describes a technique for the high-yield isolation of tubulin from the porcine brain optimized for small-scale instrumentation. The isolation procedures are complemented by procedures for determining tubulin polymerization activity in vitro using co-sedimentation assays and transmission electron microscopy.
10:28
Expression, Purification, and Liposome Binding of Budding Yeast SNX-BAR Heterodimers
0 Views •
Cited by 2 •
2019
Here, we present a workflow for the expression, purification and liposome binding of SNX-BAR heterodimers in yeast.
08:07
Label-Free Non-Linear Optics for the Study of Tubulin-Dependent Defects in Central Myelin
0 Views •
2023
In this article, we present a protocol to detect microtubule-loaded oligodendrocytes in a model of tubulinopathy through a simple, innovative second harmonic generation microscopy approach.
07:54
Purification of Tubulin with Controlled Posttranslational Modifications and Isotypes from Limited Sources by Polymerization-Depolymerization Cycles
0 Views •
Cited by 6 •
2020
This protocol describes tubulin purification from small/medium-scale sources such as cultured cells or single mouse brains, using polymerization and depolymerization cycles. The purified tubulin is enriched in specific isotypes or has specific posttranslational modifications and can be used in in vitro reconstitution assays to study microtubule dynamics and interactions.
FAQs
The exchangeable GTP associated with β-tubulin provides a regulatory point for microtubule assembly. As heterodimers add to a microtubule end, the nucleotide state influences whether further growth can proceed. This links the biochemical state of individual dimers to larger-scale changes in the cytoskeleton, allowing cells to reorganize microtubules as their structural or transport needs change.
After assembly, GTP hydrolysis changes the conditions that support continued microtubule growth. The resulting dynamic instability produces alternating phases of extension and shrinkage rather than a permanently fixed polymer. This behavior allows microtubule arrays to remodel rapidly, which is important when cells alter their shape, reorganize intracellular transport routes, or assemble and modify structures involved in division.
Microtubule ends are the sites where tubulin heterodimers are added during assembly and removed during shrinkage. Consequently, the nucleotide state of dimers at or near an end strongly influences the polymer’s behavior. Examining these end-associated changes helps connect molecular events, such as GTP hydrolysis, with observable transitions between microtubule growth and depolymerization.
Microscopy-based analysis can connect tubulin heterodimer activity with changes in cellular structure and behavior. By examining microtubule organization, researchers can study how dynamic polymers contribute to cell shape, intracellular transport, and division. The approach is especially useful for relating molecular regulation to visible cytoskeletal patterns rather than considering nucleotide binding or assembly in isolation.
During cell division, tubulin heterodimers support the microtubule dynamics required for spindle formation. Because microtubules can alternate between growth and shrinkage, the cytoskeletal system can organize and remodel the spindle as division proceeds. Studying this connection helps explain how molecular regulation of assembly contributes to the larger cellular process of chromosome-segregating structure formation.
Tubulin heterodimers are central to research on intracellular trafficking because their assembly produces microtubules, which organize transport within cells. Changes in microtubule growth and shrinkage can alter the cytoskeletal framework used for movement of cellular materials. Investigating these dynamics therefore links tubulin biochemistry with the spatial organization and distribution of components inside the cell.
Research on tubulin heterodimers supports studies of anticancer drugs and neurodegenerative disease by focusing on microtubule dynamics and organization. In cancer research, the connection is relevant to processes involving cell division, while neurodegenerative studies can examine cytoskeletal organization and transport. These applications extend tubulin analysis from basic cell biology to disease-related investigation.