Tubulin Isotypes
Tubulin Isotypes - Related Videos
07:54
Purification of Tubulin with Controlled Posttranslational Modifications and Isotypes from Limited Sources by Polymerization-Depolymerization Cycles
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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.
02:40
Second Harmonic Generation Imaging in a Rat Model to Study Tubulin Defects
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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.
05:04
Viral Antigen Microarray Assay to Detect Antibody Isotypes in Serum Against Viral Antigen
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2025
In this video, we demonstrate the process for detecting antibody isotypes in multiple human serum samples using a microarray slide printed with antigenic subtypes of influenza virus strains.
06:30
Optimizing Tubulin Yield from Porcine Brain Tissue
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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.
08:07
Label-Free Non-Linear Optics for the Study of Tubulin-Dependent Defects in Central Myelin
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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.
FAQs
Amino acid differences, especially in the variable C-terminal regions, can alter how tubulin subunits assemble and how the resulting microtubules behave. These sequence features may influence polymer stability, interactions with motor proteins, and access to regulatory post-translational modifications. Comparing these regions therefore connects sequence variation with cytoskeletal function.
Isotypes are genetically encoded amino acid variants, whereas post-translational modifications are regulatory changes applied to tubulin. They can affect overlapping properties, including motor interactions and microtubule behavior, but comparison separates effects attributable to sequence from those associated with later modification. This distinction helps biochemical interpretation across tissues or conditions.
Because sequence variation can help generate microtubule networks with different assembly, stability, motor-protein interactions, or modification profiles. Those properties may suit the demands of particular tissues or cellular conditions. In biochemistry, tissue-associated isotype patterns offer a way to connect molecular differences with specialized cytoskeletal behavior and function.
A useful comparison examines more than the presence of a particular variant. Researchers can assess effects on microtubule assembly, polymer stability, motor-protein interactions, and susceptibility to post-translational modifications. Considering these features together helps determine whether an isotype is associated with distinct microtubule behavior rather than merely a different amino acid sequence.
By linking sequence variation to microtubule behavior, isotype analysis can help explain how cytoskeletal networks support chromosome separation during cell division or specialized functions in neurons. The biochemical value lies in identifying molecular differences that may correspond to distinct assembly, stability, transport-related interactions, or regulatory profiles in these contexts.
Isotype-dependent differences can influence how microtubules behave in the presence of drugs that target them, including differences in drug action or selectivity. Studying the relevant variants alongside assembly, stability, and regulatory properties may clarify why a microtubule-targeting compound has differing effects across cellular contexts. This makes isotype comparison useful in cancer biology.