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Beta-Tubulin Subunit (β-tubulin)
- Target
- β-tubulin
- Molecular classification
- Cytoskeletal protein, Structural protein
01
Overview
Beta-tubulin is a globular protein that forms heterodimers with alpha-tubulin, which are the building blocks of microtubules. Microtubules are essential cytoskeletal filaments involved in structural support, intracellular transport, cell division, and cell motility. Beta-tubulin binds GTP and its hydrolysis regulates microtubule dynamics. Multiple beta-tubulin isotypes exist with varying tissue expression patterns. Beta-tubulin is a target for several chemotherapeutic drugs.
- Other names
- Tubulin beta chainTUBB
02
Mechanism of action
Microtubule stabilization (e.g., Paclitaxel) or destabilization (e.g., Colchicine, Vinca alkaloids).
03
Biological functions
Structural supportIntracellular transportCell divisionCell shape maintenanceCell motilityMicrotubule dynamics
04
Disease associations
CancerNeurodegenerative diseases (related to microtubule dysfunction)
05
Safety considerations
Drug resistance (mutations in beta-tubulin)Neurotoxicity (certain microtubule-targeting drugs)Myelosuppression (certain microtubule-targeting drugs)
06
Interacting drugs
Paclitaxel (Taxol)
3 more in the full profile.
07
Biomarkers
Beta-tubulin isotype expression levels (potential predictive biomarker for drug response in cancer)Mutations in beta-tubulin genes (resistance to microtubule-targeting drugs)
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