GO:0097749 membrane tubulation: Membrane Organization Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0097749 membrane tubulation is a biological_process in which a membrane is reorganized into a tubular projection, facing either inward (invaginations) or outward (endosomal tubules).
• Membrane tubulation is driven by protein modules that couple membrane bending to curvature sensing and, frequently, to fission.
• Lysosomes are a major site of membrane tubulation, where LRRK2 and TECPR1 mediate tubule formation for vesicle sorting and organelle repair.
• Pathogens exploit host membrane tubulation: meningococci recruit host signaling receptors through tubules, and bacterial glycolipids can directly induce tubulation.
• The cytoskeleton provides force and scaffolding for tubulation, linking physical principles to cellular mechanisms.
• Membrane tubulation is experimentally tractable using biomembrane force probes, reconstitution, imaging, and CRISPR-based perturbation.
Description
Membrane tubulation (GO:0097749) is a membrane organization process that produces tubular projections from cellular membranes, either as inward invaginations or outward endosomal tubules. This process is fundamental to organelle shape, cargo sorting, and membrane homeostasis, and it is conserved from endosomal systems to pathogen-host interfaces. Researchers study membrane tubulation because defects in tubule formation are linked to lysosomal dysfunction, neurodegeneration, and infection, and because tubulation is a tractable readout for membrane remodeling mechanisms. Recent work has defined the molecular players and physical principles that drive tubulation, including two-component protein modules that couple curvature generation to fission. The QuickGO definition of GO:0097749 emphasizes that tubulation may face inwardly or outwardly, reflecting the diversity of cellular contexts in which it occurs.
membrane tubulation At A Glance
| GO ID | GO:0097749 |
|---|---|
| GO term | membrane tubulation |
| Ontology | biological_process |
| Synonym | None listed in QuickGO |
| Major function | Formation of tubular membrane projections, inward or outward |
| Cellular context | Endosomes, lysosomes, plasma membrane, pathogen-host interfaces |
| Key molecular drivers | LRRK2, TECPR1, cytoskeletal systems, two-component modules |
| Related processes | Membrane organization, vesicle sorting, membrane fission, lysosomal quality control |
What Is GO:0097749?
GO:0097749 membrane tubulation is defined by QuickGO as a membrane organization process resulting in the formation of a tubular projection. This projection can face inwardly, as in tubular membrane invaginations, or outwardly, as in endosomal tubules. In practice, membrane tubulation encompasses the protein-driven bending, stabilization, and extension of membrane into tubular shapes, often coupled to cargo sorting and fission.
Why Is membrane tubulation Important in Cell Biology?
Membrane tubulation is important because it underlies organelle remodeling, cargo sorting, and cellular responses to stress and infection, and its dysfunction is increasingly linked to human disease. Understanding GO:0097749 provides a mechanistic entry point for studying lysosomal biology, neurodegeneration, and host-pathogen interactions, and it offers experimental handles for CRISPR-based perturbation and imaging-based assays.
• Membrane tubulation shapes endosomes and lysosomes, influencing cargo sorting and organelle identity.
• TECPR1-mediated tubulation supports lysosome repair during energy crisis, linking tubulation to cell survival.
• LRRK2-dependent tubulation from lysosomes connects membrane remodeling to Parkinson's disease biology.
• Pathogens such as meningococci exploit host membrane tubulation to recruit signaling receptors.
• Bacterial glycolipids can directly induce membrane tubulation, highlighting lipid-driven mechanisms.
• Cytoskeletal systems provide force and organization for tubulation across scales.
• Two-component modules couple tubulation to fission, integrating curvature generation with scission.
• Biomembrane force probes enable quantitative measurement of tubulation mechanics.
• Lysosomal quality control pathways depend on tubulation for membrane retrieval and repair.
• Tubulation is a tractable phenotype for CRISPR screens and high-content imaging.
What Happens During membrane tubulation?
Initiation and membrane curvature generation
In simple terms: The membrane first bends locally to start a tube.
Membrane tubulation begins with local curvature generation driven by protein modules and lipid composition. Two-component modules can generate curvature and couple it to fission, establishing a tubular intermediate. Bacterial glycolipids can also directly induce tubulation, showing that lipid-driven mechanisms can initiate curvature. Cytoskeletal forces contribute to shaping and extending these initial deformations.
Tubule extension and stabilization
In simple terms: The short bend is extended into a longer tube and held in shape.
Once initiated, tubules are extended and stabilized by protein scaffolds and cytoskeletal systems. LRRK2 mediates tubulation and vesicle sorting from lysosomes, indicating a role in sustaining tubular extensions. TECPR1-mediated membrane tubulation supports lysosome repair, demonstrating stabilization of tubules in a stress context. Physical principles derived from cytoskeletal studies help explain how forces stabilize tubular geometry.
Cargo sorting and vesicle formation
In simple terms: The tube helps sort and package cargo into vesicles.
Tubulation is frequently coupled to cargo sorting and vesicle formation. LRRK2 mediates tubulation and vesicle sorting from lysosomes, linking tubular membrane organization to cargo selection. Two-component modules can couple tubulation with fission, enabling vesicle release from tubular intermediates. This coupling is central to endosomal and lysosomal sorting pathways.
Fission and resolution
In simple terms: The tube pinches off to complete the process.
Fission resolves tubular intermediates into vesicles or restores membrane continuity. Two-component modules can drive membrane tubulation coupled with fission, providing a minimal system for studying resolution. Lysosomal quality control pathways rely on such resolution steps for membrane retrieval and repair. Pathogen-driven tubulation also interfaces with host membrane trafficking, including fission-dependent steps.
Pathogen and host membrane remodeling
In simple terms: Some microbes hijack the host's tube-making machinery.
Meningococci drive host membrane tubulation to recruit their signaling receptors, illustrating pathogen exploitation of this process. Bacterial glycolipids can induce membrane tubulation directly, providing a lipid-based mechanism for host membrane remodeling. These examples highlight membrane tubulation as a host-pathogen interface.
Key Genes Involved in GO:0097749 membrane tubulation
The following genes and proteins have been experimentally implicated in membrane tubulation (GO:0097749) or in closely related membrane remodeling processes.
| Gene | Major Role | Research Relevance |
|---|---|---|
| LRRK2 | Mediates tubulation and vesicle sorting from lysosomes | Parkinson's disease and lysosomal sorting |
| TECPR1 | Mediates membrane tubulation for lysosome repair | Lysosomal quality control and energy crisis |
| ATG16L1 | Autophagy-related membrane remodeling | Lysosomal quality control context |
| Rab7 | Endosomal/lysosomal membrane trafficking | Tubulation and sorting pathways |
| Rab9 | Endosomal tubule formation and cargo sorting | Endosomal tubulation |
| VPS35 | Retromer-associated sorting | Endosomal tubulation and neurodegeneration |
| SNX1 | Sorting nexin, membrane curvature and tubulation | Endosomal tubule formation |
| SNX2 | Sorting nexin, membrane remodeling | Endosomal tubulation |
| BIN1 | Membrane bending and tubulation | Membrane remodeling |
| DNM2 | Dynamin, fission coupled to tubulation | Tubulation-fission coupling |
| Actin (ACTB) | Cytoskeletal force for tubulation | Cytoskeletal mechanisms |
| Myosin motors (MYO6) | Force generation on membranes | Cytoskeletal tubulation |
| Microtubules (TUBB) | Scaffolding and transport | Cytoskeletal tubulation |
| Clathrin (CLTC) | Membrane bending and invagination | Inward tubulation |
| AP-2 (AP2M1) | Endocytic membrane remodeling | Inward tubulation |
| Caveolin (CAV1) | Membrane curvature and tubulation | Membrane organization |
| EHD2 | Membrane tubulation and fission | Tubulation-fission coupling |
How Is membrane tubulation Regulated?
Membrane tubulation is regulated by protein modules that couple curvature generation to fission, as shown for two-component systems. Cytoskeletal systems provide regulated force and scaffolding that control tubule extension and stability. In lysosomes, LRRK2 regulates tubulation and vesicle sorting, linking kinase-dependent signaling to membrane remodeling. TECPR1-mediated tubulation is engaged during energy crisis, indicating stress-responsive regulation of lysosome repair. Pathogen-derived factors such as bacterial glycolipids and meningococcal effectors can also regulate host tubulation.
membrane tubulation and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| LRRK2 | Parkinson's disease; lysosomal tubulation and sorting | LRRK2 KO and point-mutation knock-in cell models |
| TECPR1 | Lysosomal repair during energy crisis | TECPR1 KO and tagged knock-in for imaging |
| ATG16L1 | Lysosomal quality control | ATG16L1 KO autophagy models |
| VPS35 | Endosomal sorting and neurodegeneration | VPS35 KO and knock-in models |
| SNX1/SNX2 | Endosomal tubulation and sorting | SNX KO and overexpression models |
Membrane tubulation in neurodegeneration
LRRK2 mediates tubulation and vesicle sorting from lysosomes, and LRRK2 dysfunction is linked to Parkinson's disease biology. Defects in lysosomal tubulation and sorting may contribute to neuronal vulnerability through impaired membrane homeostasis. Lysosomal quality control pathways that depend on tubulation are relevant to neurodegeneration.
Membrane tubulation in lysosomal disease and quality control
TECPR1-mediated membrane tubulation supports lysosome repair during energy crisis, connecting tubulation to lysosomal quality control. Lysosomal quality control reviews highlight tubulation as a mechanism for membrane retrieval and repair. Disruption of these pathways can impair lysosomal function and cellular stress responses.
Membrane tubulation in infection
Meningococci drive host membrane tubulation to recruit their signaling receptors, a mechanism that supports infection. Bacterial glycolipids can directly induce membrane tubulation, providing a pathogen-derived trigger. These interactions position membrane tubulation as a target for anti-infective research.
From membrane tubulation-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is a candidate gene required for membrane tubulation? | CRISPR knockout cell model |
| Does a disease variant alter tubulation? | Point-mutation knock-in cell model |
| Where does a protein localize during tubulation? | Tagged knock-in with fluorescent tag |
| Does overexpression drive tubulation? | Overexpression cell model |
| Which genes regulate tubulation in a genome-wide manner? | CRISPR library screening |
| How do lipids and proteins cooperate in tubulation? | In vitro reconstitution and biomembrane force probe |
How to Study the membrane tubulation Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Live-cell fluorescence imaging | Tubule formation and dynamics | Visualizing membrane tubulation |
| Biomembrane force probe | Mechanical properties of tubulation | Quantifying membrane mechanics |
| In vitro reconstitution | Minimal components for tubulation and fission | Dissecting two-component modules |
| CRISPR knockout | Gene requirement for tubulation | Loss-of-function studies |
| CRISPR overexpression | Sufficiency to induce tubulation | Gain-of-function studies |
| CRISPR library screening | Genome-wide regulators of tubulation | Discovery of novel factors |
| Tagged knock-in imaging | Protein localization during tubulation | Tracking specific proteins |
| Pathogen infection assays | Host tubulation induced by microbes | Host-pathogen interaction studies |
Imaging-based tubulation assays
Fluorescence and live-cell imaging are used to visualize tubular membrane projections and quantify tubulation dynamics. Tagged knock-in models enable tracking of specific proteins during tubule formation. High-content imaging can be combined with CRISPR perturbation to identify regulators.
Biophysical measurement of tubulation
Biomembrane force probes allow quantitative measurement of membrane tubulation mechanics. In vitro reconstitution with two-component modules provides a minimal system to dissect tubulation and fission. Cytoskeletal physical principles can be tested in reconstituted systems.
Genetic perturbation and screening
CRISPR knockout and overexpression models are used to test whether specific genes are required for or sufficient to drive tubulation. CRISPR library screening can identify novel regulators of membrane tubulation. Point-mutation knock-in models can assess disease variant effects.
Pathogen and lipid-based induction
Bacterial glycolipids can be used to induce membrane tubulation experimentally. Meningococcal infection models can probe host membrane tubulation and receptor recruitment. These systems complement genetic approaches to study tubulation mechanisms.
How CRISPR Can Be Used to Study GO:0097749 membrane tubulation
Knockout
CRISPR knockout cell models are used to test whether a gene is required for membrane tubulation, as shown for lysosomal tubulation pathways. Loss-of-function models can reveal defects in tubule formation, cargo sorting, and lysosome repair.
Point Mutation
Point-mutation knock-in models allow assessment of disease-associated variants in genes such as LRRK2 for their effects on tubulation. These models help distinguish catalytic and non-catalytic functions in membrane remodeling.
Knock-in
Tagged knock-in models enable visualization of endogenous proteins during membrane tubulation, as exemplified by TECPR1 studies. Knock-in of reporters supports dynamic imaging of tubule formation and resolution.
Overexpression
Overexpression models test whether a gene is sufficient to drive membrane tubulation, as shown for LRRK2 and two-component modules. These models are useful for gain-of-function screens and mechanistic dissection.
How EDITGENE Supports membrane tubulation Research
Researchers studying membrane tubulation-related genes often need to determine whether a candidate gene is causally involved in tubule formation, cargo sorting, or disease-associated dysfunction. Rigorous causal testing requires well-controlled CRISPR models that can isolate loss-of-function, gain-of-function, and variant-specific effects in relevant cell types.
Contact EDITGENE today to design your custom CRISPR model for membrane tubulation research.
Frequently Asked Questions About membrane tubulation
What is membrane tubulation (GO:0097749)?
Membrane tubulation is a membrane organization process that forms tubular projections, facing inward as invaginations or outward as endosomal tubules.
What genes are involved in membrane tubulation?
Genes implicated include LRRK2, TECPR1, and components of two-component modules and cytoskeletal systems.
How is membrane tubulation regulated?
It is regulated by protein modules coupling curvature to fission, cytoskeletal forces, and stress-responsive pathways such as lysosome repair.
Why is membrane tubulation important for lysosomes?
Tubulation supports lysosome repair and vesicle sorting, as shown for TECPR1 and LRRK2.
Can pathogens induce membrane tubulation?
Yes, meningococci drive host membrane tubulation to recruit signaling receptors, and bacterial glycolipids can directly induce tubulation.
What methods study membrane tubulation?
Live-cell imaging, biomembrane force probes, in vitro reconstitution, and CRISPR perturbation are commonly used.
Is membrane tubulation linked to Parkinson's disease?
LRRK2 mediates lysosomal tubulation and sorting, linking this process to Parkinson's disease biology.
What is the role of the cytoskeleton in membrane tubulation?
Cytoskeletal systems provide force and scaffolding that shape and stabilize tubular membranes.
How do two-component modules drive tubulation?
They generate curvature and couple it to fission, enabling tubular intermediate resolution.
How can CRISPR help study membrane tubulation?
CRISPR knockout, knock-in, overexpression, and library screening can test gene requirement, variant effects, and genome-wide regulators.
Conclusion
Membrane tubulation (GO:0097749) is a central membrane organization process that shapes organelles, sorts cargo, and interfaces with infection and disease. Mechanistic studies have defined protein modules, cytoskeletal contributions, and stress-responsive pathways that drive tubule formation and resolution. CRISPR-based models and quantitative imaging provide powerful tools to dissect these mechanisms and their disease relevance.
References
- 1. Chen H et al.. 2026. Repair of damaged lysosomes by TECPR1-mediated membrane tubulation during energy crisis.. Cell Res 36(1):51-71 PMID: 41478856
- 2. Pincet L et al.. 2023. Membrane Tubulation with a Biomembrane Force Probe.. Membranes (Basel) 13(12) PMID: 38132914
- 3. Bonet-Ponce L et al.. 2020. LRRK2 mediates tubulation and vesicle sorting from lysosomes.. Sci Adv 6(46) PMID: 33177079
- 4. Nomura K et al.. 2025. Membrane tubulation induced by a bacterial glycolipid.. Sci Rep 15(1):9699 PMID: 40113929
- 5. Henn D et al.. 2025. Lysosomal quality control Review.. Autophagy 21(7):1413-1432 PMID: 39968899
- 6. Park SH et al.. 2026. Membrane Tubulation by Cytoskeletal System: From Physical Principles to Cellular Mechanisms and In Vitro Reconstitution.. J Oleo Sci 75(7):737-754 PMID: 42386553
- 7. Bhattacharyya S et al.. 2024. Dynamics of membrane tubulation coupled with fission by a two-component module.. Proc Natl Acad Sci U S A 121(20):e2402180121 PMID: 38717859
- 8. Laurent-Granger A et al.. 2025. Meningococci drive host membrane tubulation to recruit their signaling receptors.. Nat Commun 16(1):10433 PMID: 41290585
