GO:0090042 tubulin deacetylation: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0090042 (tubulin deacetylation) is the biological process that removes an acetyl group from tubulin, reversing the acetylation mark on the microtubule lattice.
• HDAC6 is the principal tubulin deacetylase in mammalian cells and its catalytic mechanism has been resolved structurally.
• Tubulin deacetylation controls microtubule dynamics, ciliary disassembly, autophagy, cell motility and platelet cytoskeletal signaling [3,5,8].
• Dysregulated tubulin deacetylation is implicated in Parkinson's disease, diabetic nephropathy, senescence-associated secretion and cancer biology [1,4,5].
• The process is regulated by HDAC6 domain architecture, its partners such as cortactin, and upstream signals including PIK3C3-dependent autophagy pathways [6,7,8].
• CRISPR knockout, point-mutation, knock-in and overexpression models allow causal testing of tubulin deacetylation genes in disease-relevant cells.
Description
Tubulin deacetylation (GO:0090042) is the enzymatic removal of an acetyl group from tubulin, the building block of microtubules. This post-translational modification is the reverse of tubulin acetylation and is a key determinant of microtubule stability, dynamics and interaction with cellular motors. The process was first characterized in intact neurons, where alpha-tubulin deacetylation was shown to be a dynamic event that could be experimentally distinguished from acetylation. Because microtubule acetylation status influences cargo transport, cell polarity and signaling, the enzymes that catalyze deacetylation are central to cytoskeletal regulation [3,7]. In mammalian cells, histone deacetylase 6 (HDAC6) is the best-characterized tubulin deacetylase, and its structural basis for tubulin deacetylation and selective inhibition has been defined. HDAC6-mediated deacetylation of alpha-tubulin coordinates cytoskeletal and signaling events during platelet activation, suppresses autophagy and enhances motility of podocytes in diabetic nephropathy, and is required for ciliary disassembly together with cortactin deacetylation. Beyond HDAC6, other regulators such as TIGAR can influence alpha-tubulin deacetylation during the senescence-associated secretory phenotype, and PIK3C3-dependent autophagy pathways control Sertoli cell polarity through downstream effects that involve cytoskeletal remodeling. For researchers, GO:0090042 provides a precise ontology handle for experiments that manipulate tubulin acetylation status. The term is relevant to neurodegeneration, metabolic disease, ciliopathies and cancer, and it is increasingly studied with CRISPR-based models that test causality of HDAC6 and related genes [4,5,7].
tubulin deacetylation At A Glance
| GO ID | GO:0090042 |
|---|---|
| GO term | tubulin deacetylation |
| Ontology | biological_process |
| Synonym | none |
| Major function | Removal of an acetyl group from tubulin, reversing tubulin acetylation and modulating microtubule properties [2,7] |
| Principal enzyme | HDAC6 is the best-characterized tubulin deacetylase in mammalian cells |
| Substrate | Tubulin, particularly alpha-tubulin acetylated on lysine 40 [2,7] |
| Associated processes | Microtubule dynamics, ciliary disassembly, autophagy, cell motility, platelet activation [3,5,8] |
| Disease links | Parkinson's disease, diabetic nephropathy, senescence-associated secretory phenotype [1,4,5] |
What Is GO:0090042?
GO:0090042 tubulin deacetylation is defined in QuickGO as the removal of an acetyl group from tubulin, where an acetyl group is CH3CO-, derived from acetic (ethanoic) acid. In practical terms, it is the enzymatic erasure of an acetyl mark on tubulin, most commonly on lysine 40 of alpha-tubulin, reversing the acetylation that marks stable microtubules [2,7].
Why Is tubulin deacetylation Important in Cell Biology?
Tubulin deacetylation is important because it directly controls the acetylation status of the microtubule cytoskeleton, which in turn regulates microtubule stability, motor protein trafficking, cell shape and signaling [2,3]. Because HDAC6 is the dominant tubulin deacetylase and is druggable, this process is a focal point for understanding and potentially treating diseases ranging from neurodegeneration to metabolic and fibrotic disorders [4,5,7].
• Reverses tubulin acetylation and thereby tunes microtubule stability and dynamics.
• Coordinates cytoskeletal and signaling events during platelet activation.
• Suppresses autophagy and enhances motility of podocytes in diabetic nephropathy.
• Is required, together with cortactin deacetylation, for ciliary disassembly.
• Contributes to the senescence-associated secretory phenotype via lysosome repositioning.
• Is dysregulated in Parkinson's disease, where microtubule acetylation homeostasis is altered.
• Provides a druggable target because HDAC6 can be selectively inhibited.
• Links autophagy-related signaling, such as PIK3C3 pathways, to cytoskeletal polarity.
• Serves as a readout for microtubule-targeting perturbations in cell biology and neuroscience [2,4].
• Enables CRISPR-based causal testing of HDAC6 and related genes in disease models [5,7].
What Happens During tubulin deacetylation?
Recognition of acetylated tubulin
In simple terms: The deacetylase enzyme first finds and binds the acetylated tubulin substrate.
Tubulin deacetylation begins when a deacetylase such as HDAC6 recognizes acetylated tubulin, particularly alpha-tubulin acetylated on lysine 40 [2,7]. Structural studies of HDAC6 have revealed how its catalytic domain engages the tubulin substrate and how selective inhibitors block this interaction. In intact neurons, alpha-tubulin deacetylation was shown to be a dynamic process, indicating that the substrate is continuously accessible to the deacetylase.
Catalytic removal of the acetyl group
In simple terms: The enzyme chemically clips off the acetyl mark from tubulin.
The catalytic step removes the acetyl group (CH3CO-) from the modified lysine residue of tubulin, reversing the acetylation mark [2,7]. HDAC6 is the principal enzyme responsible for this reaction in mammalian cells, and its tubulin deacetylation activity is distinct from its other deacetylase functions. This reaction is the defining event of GO:0090042 and is what distinguishes it from tubulin acetylation.
Coordination with cortactin deacetylation
In simple terms: The same enzyme also modifies a partner protein to trigger downstream effects.
HDAC6-mediated deacetylation of alpha-tubulin is coupled to deacetylation of cortactin, and both events are required for HDAC6 to trigger ciliary disassembly. This shows that tubulin deacetylation is not an isolated reaction but part of a coordinated deacetylation program that remodels the cytoskeleton.
Downstream cytoskeletal and signaling consequences
In simple terms: Removing the acetyl mark changes how the cell moves, divides and responds to signals.
After tubulin is deacetylated, microtubule properties change, affecting autophagy, cell motility and signaling. In podocytes, HDAC6-mediated alpha-tubulin deacetylation suppresses autophagy and enhances motility in diabetic nephropathy. In platelets, HDAC6-mediated deacetylation of alpha-tubulin coordinates cytoskeletal and signaling events during activation. TIGAR coordinates the senescence-associated secretory phenotype via lysosome repositioning and alpha-tubulin deacetylation, and PIK3C3-dependent autophagy regulation controls Sertoli cell polarity through pathways that involve cytoskeletal remodeling.
Key Genes Involved in GO:0090042 tubulin deacetylation
The following genes and proteins are experimentally linked to tubulin deacetylation (GO:0090042) and its regulatory network.
| Gene | Major Role | Research Relevance |
|---|---|---|
| HDAC6 | Principal tubulin deacetylase that removes the acetyl group from alpha-tubulin | Central target for selective inhibition and CRISPR knockout studies |
| TUBA1A | Alpha-tubulin isoform that carries the acetyl mark removed during deacetylation | Substrate readout for acetylation/deacetylation assays |
| TIGAR | Coordinates senescence-associated secretory phenotype via lysosome repositioning and alpha-tubulin deacetylation | Links metabolism and senescence to tubulin deacetylation |
| CTTN (cortactin) | Its deacetylation by HDAC6 is required together with tubulin deacetylation for ciliary disassembly | Co-substrate in HDAC6-dependent cytoskeletal remodeling |
| PIK3C3 | Autophagy regulation and protein kinase activity controlling Sertoli cell polarity | Connects autophagy signaling to cytoskeletal polarity |
| SCIN (scinderin) | Negatively regulated by PIK3C3 in Sertoli cell polarity control | Downstream effector of autophagy-cytoskeleton crosstalk |
| HDAC6 catalytic domain | Catalyzes the deacetylation reaction and binds selective inhibitors | Structural target for inhibitor design and point-mutation studies |
| Alpha-tubulin K40 | Acetylated lysine residue that is the substrate of deacetylation [2,7] | Key residue for acetylation-specific antibodies and mutagenesis |
| Microtubule lattice | Structural platform on which deacetylation occurs | Context for imaging and dynamics studies |
| Lysosome | Repositioned during senescence-associated secretory phenotype in a TIGAR-dependent manner | Organelle readout linking deacetylation to secretion |
| Autophagy machinery | Suppressed by HDAC6-mediated alpha-tubulin deacetylation in podocytes | Pathway for functional validation of deacetylation |
| Platelet cytoskeleton | Site where HDAC6-mediated deacetylation coordinates signaling | Model for rapid cytoskeletal signaling studies |
| Cilium | Disassembles when HDAC6 deacetylates tubulin and cortactin | Organelle model for deacetylation-dependent resorption |
| Podocyte cytoskeleton | Motility enhanced by HDAC6-mediated deacetylation in diabetic nephropathy | Disease-relevant cell model |
| Neuronal microtubules | Site of dynamic alpha-tubulin deacetylation in intact neurons | Classic model for deacetylation dynamics |
| Parkinson's disease neurons | Show microtubule acetylation dyshomeostasis | Neurodegeneration model for deacetylation studies |
How Is tubulin deacetylation Regulated?
Tubulin deacetylation is regulated at multiple levels. The catalytic activity of HDAC6 depends on its domain architecture, and structural studies have defined how its tubulin deacetylase domain engages substrate and how selective inhibitors interfere. HDAC6 activity is coupled to deacetylation of partner proteins such as cortactin, which is required for ciliary disassembly. Upstream, TIGAR coordinates alpha-tubulin deacetylation during the senescence-associated secretory phenotype via lysosome repositioning, and PIK3C3-dependent autophagy regulation controls Sertoli cell polarity through pathways that involve cytoskeletal remodeling. In disease contexts, HDAC6-mediated alpha-tubulin deacetylation suppresses autophagy and enhances podocyte motility in diabetic nephropathy, and microtubule acetylation dyshomeostasis is observed in Parkinson's disease.
tubulin deacetylation and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| HDAC6 | Diabetic nephropathy; podocyte autophagy and motility | Podocyte knockout or point-mutation models |
| TIGAR | Senescence-associated secretory phenotype | Knockout and overexpression in senescent cells |
| HDAC6 / CTTN | Ciliary disassembly | Knock-in and knockout in ciliated cells |
| Alpha-tubulin | Parkinson's disease microtubule dyshomeostasis | Neuronal models with acetylation-site mutations |
| PIK3C3 / SCIN | Sertoli cell polarity and autophagy | Knockout in Sertoli cell models |
Tubulin deacetylation in Parkinson's disease
Microtubule acetylation dyshomeostasis has been described in Parkinson's disease, implicating altered tubulin deacetylation in neuronal dysfunction. Because alpha-tubulin deacetylation is dynamic in intact neurons, changes in deacetylase activity could contribute to the cytoskeletal defects observed in neurodegeneration.
Tubulin deacetylation in diabetic nephropathy
HDAC6-mediated alpha-tubulin deacetylation suppresses autophagy and enhances motility of podocytes in diabetic nephropathy. This links tubulin deacetylation directly to a metabolic kidney disease and suggests HDAC6 as a candidate target in podocyte injury.
Tubulin deacetylation in senescence and secretion
TIGAR coordinates the senescence-associated secretory phenotype via lysosome repositioning and alpha-tubulin deacetylation. This places tubulin deacetylation within the secretory program of senescent cells, relevant to aging and inflammation.
Tubulin deacetylation in platelet and ciliary biology
HDAC6-mediated deacetylation of alpha-tubulin coordinates cytoskeletal and signaling events during platelet activation, and deacetylation of alpha-tubulin and cortactin is required for ciliary disassembly. These settings illustrate how tubulin deacetylation contributes to normal physiology and to disorders of platelet function and cilia [3,8].
From tubulin deacetylation-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is HDAC6 required for tubulin deacetylation in a given cell type? | HDAC6 knockout cell line |
| Does a specific HDAC6 catalytic residue mediate tubulin deacetylation? | Point-mutation knock-in of the catalytic domain |
| Does alpha-tubulin K40 acetylation status control a phenotype? | Knock-in of acetylation-site mutants |
| Does TIGAR-dependent deacetylation drive senescence secretion? | TIGAR knockout and overexpression |
| Does HDAC6-mediated deacetylation suppress autophagy in podocytes? | Podocyte overexpression and knockout models |
| Is cortactin deacetylation required for ciliary disassembly? | CTTN point-mutation and knockout models |
How to Study the tubulin deacetylation Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Anti-acetyl-alpha-tubulin immunoblot | Level of acetylated tubulin after deacetylation | Monitoring deacetylase activity in cells |
| Immunofluorescence of microtubules | Spatial distribution of acetylated tubulin | Neuronal and cytoskeletal imaging |
| HDAC6 inhibitor treatment | Effect of blocking tubulin deacetylation | Pharmacological validation of HDAC6 dependence |
| Autophagy flux assay | Autophagic activity downstream of deacetylation | Podocyte and metabolic disease models |
| Cell motility assay | Migration changes caused by deacetylation | Diabetic nephropathy podocyte studies |
| Ciliary disassembly assay | Loss of cilia after HDAC6 activation | Ciliary biology and cortactin studies |
| Lysosome repositioning imaging | Organelle movement in senescence | Senescence-associated secretory phenotype studies |
| Platelet cytoskeletal signaling assay | Cytoskeletal and signaling events during activation | Platelet biology research |
Acetylation-specific immunodetection
Antibodies against acetylated alpha-tubulin are widely used to monitor tubulin deacetylation, as demonstrated in studies of intact neurons and podocytes [2,5]. This readout is the standard first-line assay for GO:0090042.
Structural and inhibitor studies
Structural insights into HDAC6 tubulin deacetylation and its selective inhibition provide a framework for designing and interpreting experiments on the catalytic mechanism. Such studies help distinguish tubulin deacetylation from other HDAC6 functions.
Functional assays for autophagy and motility
Autophagy flux and cell motility assays have been used to show that HDAC6-mediated alpha-tubulin deacetylation suppresses autophagy and enhances podocyte motility. Similar approaches can test deacetylation-dependent phenotypes in other cell types.
Organelle and cytoskeletal imaging
Imaging of lysosome repositioning, ciliary disassembly and platelet cytoskeletal reorganization has been used to link tubulin deacetylation to organelle dynamics and signaling [1,3,8]. These methods are essential for placing the biochemical reaction in a cellular context [1,3,8].
How CRISPR Can Be Used to Study GO:0090042 tubulin deacetylation
Knockout
CRISPR knockout of HDAC6 is a direct way to test whether tubulin deacetylation is required for a phenotype, given that HDAC6 is the principal tubulin deacetylase. Knockout of TIGAR or PIK3C3 can similarly probe upstream regulation of deacetylation-dependent processes [1,6].
Point Mutation
Point mutations in the HDAC6 catalytic domain can separate tubulin deacetylation from other activities, guided by structural insights into HDAC6 tubulin deacetylation and selective inhibition. Mutating the acetylation site on alpha-tubulin can test the importance of the modified residue.
Knock-in
Knock-in of tagged or mutant alleles allows tracking of deacetylation substrates and regulators in their endogenous context. This is useful for studying cortactin deacetylation alongside tubulin deacetylation during ciliary disassembly.
Overexpression
Overexpression of HDAC6 or TIGAR can drive tubulin deacetylation and reveal downstream consequences such as autophagy suppression, enhanced motility or senescence-associated secretion [1,5]. Overexpression models complement loss-of-function studies for causal inference [1,5].
How EDITGENE Supports tubulin deacetylation Research
Researchers studying tubulin deacetylation-related genes often need to determine whether a candidate gene is causally involved in the process or merely correlated with it. CRISPR-based knockout, point-mutation, knock-in and overexpression models provide the controlled perturbations needed to move from association to mechanism, and EDITGENE provides these services for tubulin deacetylation research.
Contact EDITGENE today to design your custom CRISPR model for tubulin deacetylation research.
Frequently Asked Questions About tubulin deacetylation
What is tubulin deacetylation?
Tubulin deacetylation (GO:0090042) is the removal of an acetyl group from tubulin, reversing tubulin acetylation and modulating microtubule properties [2,7].
What genes are involved in tubulin deacetylation?
HDAC6 is the principal tubulin deacetylase, and genes such as TIGAR, CTTN, PIK3C3 and SCIN are linked to related regulatory and downstream processes [1,6,7,8].
Which enzyme removes acetyl groups from tubulin?
HDAC6 is the best-characterized enzyme that removes acetyl groups from tubulin, and its structural basis for this activity has been resolved.
Why is tubulin deacetylation important?
It controls microtubule stability and dynamics, and it influences autophagy, cell motility, platelet signaling and ciliary disassembly [3,5,8].
How is tubulin deacetylation measured?
It is commonly measured with antibodies against acetylated alpha-tubulin, complemented by functional assays for autophagy, motility and organelle dynamics [1,2,5].
Is tubulin deacetylation linked to Parkinson's disease?
Yes, microtubule acetylation dyshomeostasis has been described in Parkinson's disease, implicating altered deacetylation in neuronal dysfunction.
What is the role of HDAC6 in tubulin deacetylation?
HDAC6 catalyzes the removal of the acetyl group from tubulin, and its tubulin deacetylase activity can be selectively inhibited.
Can CRISPR be used to study tubulin deacetylation?
Yes, CRISPR knockout, point-mutation, knock-in and overexpression models allow causal testing of HDAC6 and related genes in tubulin deacetylation research [1,5,7].
What diseases involve tubulin deacetylation?
It has been linked to Parkinson's disease, diabetic nephropathy and the senescence-associated secretory phenotype, among other conditions [1,4,5].
What is the GO ID for tubulin deacetylation?
The GO ID for tubulin deacetylation is GO:0090042, a biological_process term.
Conclusion
Tubulin deacetylation (GO:0090042) is a tightly regulated biological process that reverses tubulin acetylation and shapes microtubule behavior, autophagy, motility and organelle dynamics [2,5,7,8]. Its principal enzyme HDAC6 is structurally and pharmacologically well characterized, making the process a tractable target for mechanistic and disease research. From Parkinson's disease to diabetic nephropathy and senescence-associated secretion, tubulin deacetylation sits at the intersection of cytoskeletal biology and human disease [1,4,5]. CRISPR-based knockout, point-mutation, knock-in and overexpression models, combined with EDITGENE services, provide the tools needed to test causality and translate these findings.
References
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- 3. Sadoul K. 2013. Tubulin acetylation a valuable accessory of the platelet cytoskeleton. Focus on "Histone deacetylase 6-mediated deacetylation of α-tubulin coordinates cytoskeletal and signaling events during platelet activation".. Am J Physiol Cell Physiol 305(12):C1211-3 PMID: 24108865
- 4. Naren P et al.. 2023. Microtubule acetylation dyshomeostasis in Parkinson's disease.. Transl Neurodegener 12(1):20 PMID: 37150812
- 5. Liang T et al.. 2020. HDAC6-mediated α-tubulin deacetylation suppresses autophagy and enhances motility of podocytes in diabetic nephropathy.. J Cell Mol Med 24(19):11558-11572 PMID: 32885602
- 6. Wang K et al.. 2023. Autophagy regulation and protein kinase activity of PIK3C3 controls sertoli cell polarity through its negative regulation on SCIN (scinderin).. Autophagy 19(11):2934-2957 PMID: 37450577
- 7. Miyake Y et al.. 2016. Structural insights into HDAC6 tubulin deacetylation and its selective inhibition.. Nat Chem Biol 12(9):748-54 PMID: 27454931
- 8. Ran J et al.. 2015. Deacetylation of α-tubulin and cortactin is required for HDAC6 to trigger ciliary disassembly.. Sci Rep 5:12917 PMID: 26246421
