GO:1903059 regulation of protein lipidation: Signaling and Disease, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1903059 (regulation of protein lipidation) is a biological process that modulates the frequency, rate or extent of protein lipidation, a reversible post-translational modification.
• Protein lipidation encompasses several forms including S-palmitoylation, N-myristoylation, prenylation, cholesterylation, and GPI-anchoring, each controlling protein localization, stability, and interactions [1,8].
• Dysregulation of protein lipidation is linked to cancer, neurodegeneration, metabolic disorders, and infectious diseases, making it a therapeutic target [1,2,8].
• Key regulatory enzymes include ZDHHC-family palmitoyltransferases, APT1/APT2 depalmitoylases, NMT1/2, and prenyltransferases (FNTA, PGGT1B, RABGGTA/B) [1,8].
• Small-molecule modulators of lipidation are being developed as chemical probes and therapeutics, highlighting the druggability of this process.
• CRISPR-based models (knockout, point mutation, knock-in, overexpression) enable causal interrogation of lipidation regulators in disease contexts [1,8].
Description
Protein lipidation is a reversible post-translational modification that attaches lipid moieties to proteins, controlling their membrane association, trafficking, and signaling. The Gene Ontology term GO:1903059, regulation of protein lipidation, refers to any process that modulates the frequency, rate or extent of this modification. This regulatory layer is essential for cellular homeostasis, and its disruption contributes to a wide range of pathologies including cancer, neurodegeneration, and metabolic diseases [1,8]. Understanding how protein lipidation is regulated at the molecular level is therefore critical for both basic biology and therapeutic development [2,8].
regulation of protein lipidation At A Glance
| GO ID | GO:1903059 |
|---|---|
| GO term | regulation of protein lipidation |
| Ontology | biological_process |
| Synonym | regulation of lipid:protein modification; regulation of protein amino acid lipidation |
| Major function | Modulates the frequency, rate or extent of protein lipidation, affecting protein localization, stability, and interactions |
| Related modifications | S-palmitoylation, N-myristoylation, prenylation, cholesterylation, GPI-anchoring [1,8] |
| Key enzymes | ZDHHC palmitoyltransferases, APT1/APT2, NMT1/2, FNTA, PGGT1B, RABGGTA/B [1,8] |
| Disease relevance | Cancer, neurodegeneration, metabolic disorders, infectious diseases [1,2,8] |
What Is GO:1903059?
GO:1903059 (regulation of protein lipidation) is defined as any process that modulates the frequency, rate or extent of protein lipidation, the covalent attachment of lipid groups to proteins. This includes regulation of enzymes that add or remove lipids, as well as modulation of substrate availability and subcellular localization of the modification machinery [1,8].
Why Is regulation of protein lipidation Important in Cell Biology?
Regulation of protein lipidation is crucial because it controls the dynamic membrane association of hundreds of proteins, thereby influencing signal transduction, vesicular trafficking, and cell proliferation [1,8]. Dysregulation of this process is implicated in cancer, where aberrant lipidation drives oncogenic signaling, and in neurodegeneration, where altered lipidation contributes to protein aggregation and toxicity [1,8]. Moreover, pathogens exploit host lipidation machinery, and small-molecule modulators are being explored as therapeutics.
• Controls membrane targeting and signaling of Ras, Rho, and other small GTPases [1,8].
• Regulates synaptic transmission and neuronal survival through palmitoylation of receptors and scaffolds.
• Modulates immune signaling by controlling localization of adaptor proteins.
• Influences cancer cell proliferation and survival via oncogenic lipidation [1,8].
• Contributes to metabolic disorders through altered lipid homeostasis [4,7].
• Plays a role in host-pathogen interactions by modifying viral and bacterial proteins.
• Provides targets for chemical probes and therapeutics.
• Essential for development and tissue homeostasis.
• Crosstalk with phosphorylation and ubiquitination in signaling networks.
• Dysregulation linked to neurodegeneration and protein aggregation [1,8].
What Happens During regulation of protein lipidation?
Substrate recognition and enzyme recruitment
In simple terms: The cell decides which proteins get lipids by bringing specific enzymes together with their targets.
Regulation of protein lipidation begins with the recognition of substrate proteins by lipidation enzymes, such as ZDHHC palmitoyltransferases for S-palmitoylation or NMT1/2 for N-myristoylation [1,8]. This step is controlled by enzyme expression levels, post-translational modifications of the enzymes, and scaffolding proteins that localize enzymes to specific membranes. For example, Hsp90 can influence the stability and activity of lipidation enzymes, indirectly affecting substrate lipidation.
Lipid attachment and modification
In simple terms: A lipid molecule is chemically attached to the protein, changing its properties.
Once recruited, the enzyme catalyzes the covalent attachment of a lipid moiety to the substrate, often at specific cysteine or glycine residues. This modification is reversible for some lipids like palmitate, allowing dynamic regulation [1,8]. The attachment can alter protein conformation, membrane affinity, and interaction partners.
Removal of lipid groups (depalmitoylation and others)
In simple terms: Enzymes can also remove lipids, making the process reversible.
Depalmitoylation is mediated by acyl-protein thioesterases (APT1/APT2) and other enzymes, which hydrolyze the thioester bond to release palmitate [1,8]. This step is critical for cycling proteins between membranes and cytosol, and its regulation affects signaling dynamics. Other lipids like prenyl groups are generally not removed, but their levels can be regulated by synthesis and transferase activity.
Integration with cellular signaling and trafficking
In simple terms: Lipidation changes where a protein goes and what it does in the cell.
Regulation of protein lipidation is tightly integrated with cellular signaling pathways, such as those involving SREBP transcription factors that control lipid homeostasis. Mitochondria-rough-ER contacts also regulate systemic lipid homeostasis, influencing the availability of lipid substrates for lipidation. Additionally, drug-mediated regulation of membrane protein function can impact lipidation indirectly.
Key Genes Involved in GO:1903059 regulation of protein lipidation
The following genes encode key enzymes and regulators involved in protein lipidation and its regulation.
| Gene | Major Role | Research Relevance |
|---|---|---|
| ZDHHC2 | Palmitoyltransferase for S-palmitoylation | Regulates synaptic signaling and cancer [1,8] |
| ZDHHC3 | Palmitoyltransferase | Modulates AMPA receptor trafficking |
| ZDHHC7 | Palmitoyltransferase | Impacts neuronal development |
| ZDHHC9 | Palmitoyltransferase | Mutated in X-linked intellectual disability |
| ZDHHC20 | Palmitoyltransferase | Regulates EGFR signaling |
| APT1 (LYPLA1) | Depalmitoylase | Controls Ras signaling [1,8] |
| APT2 (LYPLA2) | Depalmitoylase | Regulates immune signaling |
| NMT1 | N-myristoyltransferase | Essential for development; cancer target [1,8] |
| NMT2 | N-myristoyltransferase | Overlaps with NMT1 |
| FNTA | Prenyltransferase subunit | Required for Ras prenylation |
| PGGT1B | Geranylgeranyltransferase subunit | Modulates Rho GTPase function |
| RABGGTA | Rab geranylgeranyltransferase subunit | Regulates vesicular trafficking |
| RABGGTB | Rab geranylgeranyltransferase subunit | Essential for Rab prenylation |
| HSP90AA1 | Chaperone | Stabilizes lipidation enzymes |
| SREBF1 | Transcription factor | Regulates lipid homeostasis |
| SREBF2 | Transcription factor | Controls cholesterol synthesis |
| ACSL4 | Acyl-CoA synthetase | Influences lipid metabolism and ferroptosis |
| DRP1 (DNM1L) | Mitochondrial fission protein | Regulated by phosphorylation and lipidation |
How Is regulation of protein lipidation Regulated?
Regulation of protein lipidation is controlled at multiple levels. Transcription factors such as SREBP1 and SREBP2 regulate the expression of lipid synthesis genes, indirectly affecting substrate availability. Mitochondria-rough-ER contacts modulate systemic lipid homeostasis, influencing lipidation capacity. Additionally, drug-mediated regulation of membrane protein function can alter the lipid environment and affect lipidation. Small molecules can directly modulate lipidation enzymes, offering therapeutic opportunities.
regulation of protein lipidation and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| ZDHHC9 | X-linked intellectual disability | Knockout mouse, patient iPSC-derived neurons |
| NMT1 | Cancer (e.g., colorectal) | Knockout cell lines, xenograft models |
| APT1 (LYPLA1) | Cancer, inflammation | Knockout mice, overexpression cell lines |
| SREBF1 | Metabolic syndrome, fatty liver | Knockout and transgenic mice |
| HSP90AA1 | Cancer, neurodegeneration | Point mutation knock-in, chemical inhibition |
Cancer
Aberrant protein lipidation drives oncogenic signaling, particularly through Ras and Rho GTPases, which require prenylation and palmitoylation for membrane localization and activity [1,8]. Overexpression or mutation of lipidation enzymes, such as ZDHHC proteins, has been observed in various cancers, making them potential therapeutic targets [1,2].
Neurodegeneration
Altered protein lipidation contributes to neurodegenerative diseases, including Alzheimer's and Huntington's, by affecting protein aggregation and synaptic function [1,8]. For example, palmitoylation of amyloid precursor protein influences its processing and toxicity.
Metabolic disorders
Dysregulation of lipid homeostasis, including protein lipidation, is linked to obesity, diabetes, and fatty liver disease [4,7]. SREBP transcription factors, which regulate lipid synthesis, are central to these disorders.
Infectious diseases
Pathogens exploit host lipidation machinery to modify their own proteins or host proteins, facilitating immune evasion and replication. Targeting lipidation enzymes may provide antiviral and antibacterial strategies [1,2].
From regulation of protein lipidation-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does knockout of ZDHHC2 affect synaptic signaling? | ZDHHC2 knockout mouse or neuronal cell line |
| What is the effect of a point mutation in NMT1 on substrate specificity? | NMT1 point-mutant knock-in cell line |
| Can knock-in of tagged APT1 reveal its interactome? | APT1 tagged knock-in via CRISPR |
| Does overexpression of SREBP1 alter lipidation profiles? | SREBP1 overexpression cell line |
| Is ZDHHC20 required for EGFR signaling? | ZDHHC20 knockout cancer cell line |
| What is the role of Hsp90 in regulating lipidation enzymes? | Hsp90 point mutation or knockout models |
How to Study the regulation of protein lipidation Process
| Method | What It Measures | Typical Application |
|---|---|---|
| CRISPR knockout screen | Loss-of-function effects on lipidation | Identify essential regulators |
| CRISPR activation screen | Gain-of-function effects | Discover enhancers of lipidation |
| Mass spectrometry | Lipidation sites and stoichiometry | Global profiling of modifications |
| Fluorescence microscopy | Subcellular localization changes | Live-cell imaging of lipidation |
| In vitro enzyme assay | Catalytic activity | Kinetic studies and inhibitor screening |
| Lipidomics | Lipid substrate levels | Metabolic profiling |
| Co-immunoprecipitation | Protein-protein interactions | Identify enzyme-substrate complexes |
| RNA-seq | Transcriptional changes | Pathway analysis after perturbation |
CRISPR screening for lipidation regulators
Genome-wide CRISPR knockout or activation screens can identify genes that regulate protein lipidation, using reporters of lipidation or lipid-dependent signaling [1,8]. These screens are powerful for discovering novel regulators and therapeutic targets.
Proteomics and lipidomics
Mass spectrometry-based proteomics can map lipidation sites and quantify changes in response to genetic or pharmacological perturbations. Lipidomics complements this by measuring lipid species that serve as substrates.
Imaging and reporter assays
Fluorescent reporters that localize to membranes upon lipidation enable live-cell imaging of the process. These assays are useful for high-content screening of modulators.
Biochemical assays for enzyme activity
In vitro assays using recombinant enzymes and substrates measure the catalytic activity of lipidation enzymes, allowing kinetic analysis and inhibitor testing [1,2].
How CRISPR Can Be Used to Study GO:1903059 regulation of protein lipidation
Knockout
CRISPR knockout of lipidation enzymes (e.g., ZDHHC2, NMT1) can reveal their essential roles in cell signaling and viability [1,8]. Knockout models are valuable for validating targets identified in screens.
Point Mutation
Introducing point mutations in catalytic residues or regulatory sites of lipidation enzymes allows precise dissection of their functions without complete loss of protein. For example, point mutations in NMT1 can alter substrate specificity.
Knock-in
Knock-in of tagged versions (e.g., GFP, HA) of lipidation enzymes enables visualization and immunoprecipitation of endogenous complexes. This approach preserves native regulation and expression levels.
Overexpression
Overexpression of lipidation enzymes or substrates can model gain-of-function states observed in diseases like cancer [1,8]. It is useful for studying downstream signaling and identifying inhibitors.
How EDITGENE Supports regulation of protein lipidation Research
Researchers studying regulation of protein lipidation-related genes often need to determine whether a candidate gene is causally involved in a specific biological process or disease. EDITGENE provides comprehensive CRISPR-based services to generate precisely engineered cell models, enabling rigorous functional studies.
Contact EDITGENE today to design your custom CRISPR model for regulation of protein lipidation research.
Frequently Asked Questions About regulation of protein lipidation
What is GO:1903059?
GO:1903059 is the Gene Ontology term for regulation of protein lipidation, defined as any process that modulates the frequency, rate or extent of protein lipidation.
What is protein lipidation?
Protein lipidation is the covalent attachment of lipid groups to proteins, controlling their membrane localization and function [1,8].
What genes are involved in regulation of protein lipidation?
Key genes include ZDHHC family palmitoyltransferases, APT1/APT2 depalmitoylases, NMT1/2, and prenyltransferases such as FNTA and PGGT1B [1,8].
How is protein lipidation regulated?
It is regulated by enzyme expression, post-translational modifications, substrate availability, and cellular lipid homeostasis [1,4].
What diseases are associated with dysregulated protein lipidation?
Cancer, neurodegeneration, metabolic disorders, and infectious diseases are linked to altered lipidation [1,2,8].
What are the types of protein lipidation?
Major types include S-palmitoylation, N-myristoylation, prenylation, cholesterylation, and GPI-anchoring.
Can protein lipidation be targeted therapeutically?
Yes, small-molecule modulators of lipidation enzymes are being developed as chemical probes and therapeutics.
What methods are used to study protein lipidation?
Methods include CRISPR screens, mass spectrometry, fluorescence imaging, and biochemical enzyme assays [1,2].
What is the role of ZDHHC enzymes?
ZDHHC enzymes catalyze S-palmitoylation, affecting protein trafficking and signaling [1,8].
How does CRISPR help study regulation of protein lipidation?
CRISPR enables knockout, knock-in, and point mutation of lipidation genes to dissect their causal roles in cells and disease models [1,8].
Conclusion
Regulation of protein lipidation (GO:1903059) is a fundamental biological process that controls protein localization and signaling, with broad implications for human health and disease [1,8]. Understanding its mechanisms offers opportunities for therapeutic intervention, and CRISPR-based models are indispensable tools for advancing this field.
References
- 1. Yuan Y et al.. 2024. Protein lipidation in health and disease: molecular basis, physiological function and pathological implication.. Signal Transduct Target Ther 9(1):60 PMID: 38485938
- 2. Wang Z et al.. 2023. Small-Molecule Modulation of Protein Lipidation: From Chemical Probes to Therapeutics.. Chembiochem 24(14):e202300071 PMID: 37059689
- 4. Eberlé D et al.. 2004. SREBP transcription factors: master regulators of lipid homeostasis.. Biochimie 86(11):839-48 PMID: 15589694
- 5. Rusinova R et al.. 2021. Mechanisms underlying drug-mediated regulation of membrane protein function.. Proc Natl Acad Sci U S A 118(46) PMID: 34753824
- 6. Miao Z et al.. 2022. Hsp90 induces Acsl4-dependent glioma ferroptosis via dephosphorylating Ser637 at Drp1.. Cell Death Dis 13(6):548 PMID: 35697672
- 7. Anastasia I et al.. 2021. Mitochondria-rough-ER contacts in the liver regulate systemic lipid homeostasis.. Cell Rep 34(11):108873 PMID: 33730569
- 8. Chen B et al.. 2018. Protein Lipidation in Cell Signaling and Diseases: Function, Regulation, and Therapeutic Opportunities.. Cell Chem Biol 25(7):817-831 PMID: 29861273
