GO:1903962 arachidonate transmembrane transporter activity: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1903962 (arachidonate transmembrane transporter activity) is a molecular_function term describing the transfer of arachidonate from one side of a membrane to the other.
• Arachidonate transport is closely linked to membrane lipid signaling and to the function of ion channels such as TRPV3 and TRP channels in mechanotransduction [1,7].
• Altered arachidonate handling is implicated in metabolic stress, cortical spreading depression, and platelet activation in cystic fibrosis [2,5].
• The term is distinct from arachidonate metabolism enzymes; it specifically covers transmembrane movement of the fatty acid.
• Experimental study of this activity relies on lipid transport assays, electrophysiology, and CRISPR-based gene editing of candidate transporters [1,7].
• Understanding GO:1903962 helps connect membrane lipid dynamics to excitatory amino acid signaling and neurological disease [4,8].
Description
Arachidonate transmembrane transporter activity (GO:1903962) is a molecular function that enables the movement of arachidonate, a polyunsaturated fatty acid, across a membrane from one side to the other. This activity is fundamental to membrane lipid remodeling and to the release of arachidonate as a signaling molecule. The term is defined in QuickGO as enabling the transfer of arachidonate from one side of a membrane to the other, and it is classified under molecular_function. Researchers study this activity because arachidonate and its metabolites influence membrane fluidity, ion channel function, and inflammatory signaling [1,6]. The transport step itself is distinct from the enzymatic oxygenation or esterification of arachidonate, making GO:1903962 a specific annotation for membrane translocation events. In the nervous system, arachidonate transport is linked to TRP channel function and to mechanotransduction processes in diverse organisms [1,7]. Metabolic stress such as cortical spreading depression also involves changes in lipid handling that may depend on arachidonate transport. In peripheral systems, platelet activation in cystic fibrosis has been associated with altered arachidonate metabolism, highlighting the clinical relevance of this transport activity. Excitatory amino acid signaling and NMDA receptor function further connect arachidonate dynamics to synaptic physiology [4,8]. This article summarizes the definition, mechanism, key genes, disease links, and research methods for GO:1903962, based on published literature.
arachidonate transmembrane transporter activity At A Glance
| GO ID | GO:1903962 |
|---|---|
| GO term | arachidonate transmembrane transporter activity |
| Ontology | molecular_function |
| Synonym | arachidonate transporter activity; arachidonic acid transporter activity |
| Major function | Transfer of arachidonate across a membrane |
| Related processes | Membrane lipid signaling, ion channel regulation, mechanotransduction [1,7] |
| Disease relevance | Cystic fibrosis platelet activation, cortical spreading depression, excitatory amino acid disorders [2,4,5] |
| Research methods | Lipid transport assays, electrophysiology, CRISPR gene editing [1,7] |
What Is GO:1903962?
GO:1903962, arachidonate transmembrane transporter activity, is a molecular function that enables the transfer of arachidonate from one side of a membrane to the other. It is synonymous with arachidonate transporter activity and arachidonic acid transporter activity. This activity is not the same as arachidonate synthesis or metabolism; it specifically describes the transmembrane movement of the fatty acid.
Why Is arachidonate transmembrane transporter activity Important in Cell Biology?
Arachidonate transmembrane transporter activity is important because arachidonate is a precursor to eicosanoids and a modulator of ion channels, and its movement across membranes affects cellular signaling and membrane properties [1,6]. Dysregulation of arachidonate handling has been linked to metabolic stress, platelet activation, and neurological conditions, making this activity a potential target for research and therapeutic intervention [2,5].
• Arachidonate transport influences membrane lipid composition and fluidity.
• It contributes to the release of arachidonate for eicosanoid synthesis.
• TRPV3 and other TRP channels are functionally linked to arachidonate and lipid signaling [1,7].
• Cortical spreading depression involves metabolic and lipid changes that may depend on arachidonate transport.
• Platelet activation in cystic fibrosis is associated with altered arachidonate metabolism.
• Excitatory amino acid signaling and NMDA receptor function are connected to arachidonate dynamics [4,8].
• The activity is a distinct molecular function that can be studied with transport assays.
• CRISPR-based models can help identify genes required for arachidonate transport [1,7].
Molecular Mechanism of arachidonate transmembrane transporter activity
Substrate recognition and binding
In simple terms: The transporter must first recognize and bind arachidonate.
Arachidonate transmembrane transporter activity requires specific binding of arachidonate, a polyunsaturated fatty acid, to a membrane protein or protein complex. This binding is the first step that positions the fatty acid for translocation across the lipid bilayer. The molecular details of arachidonate recognition are not fully resolved for all transporters, but studies of lipid-sensitive channels such as TRPV3 indicate that arachidonate and related lipids can interact with membrane proteins to modulate their function.
Translocation across the membrane
In simple terms: The bound arachidonate is moved from one side of the membrane to the other.
Once bound, arachidonate is transferred across the membrane, which is the defining event of GO:1903962. This transfer may occur through a proteinaceous pathway or via a carrier mechanism, and it is distinct from simple diffusion because the activity is annotated as a transporter function. The direction of transport can be inward or outward depending on the cellular context, and the process is often coupled to membrane lipid remodeling [1,6].
Coupling to ion channel and signaling proteins
In simple terms: Arachidonate transport can be linked to the activity of ion channels and signaling proteins.
Arachidonate transport is functionally connected to ion channels such as TRPV3 and other TRP channels, which are activated by thermal and mechanical stimuli [1,7]. In dinoflagellates, TRP channels play a role in mechanotransduction, suggesting that lipid transport and channel activity are evolutionarily linked. In neurons, arachidonate dynamics intersect with excitatory amino acid signaling and NMDA receptor function [4,8].
Regulation by metabolic and pathological states
In simple terms: The activity can change during metabolic stress or disease.
Metabolic pathophysiology such as cortical spreading depression involves changes in lipid metabolism that may affect arachidonate transport. In cystic fibrosis, platelet activation is associated with altered arachidonate metabolism, indicating that disease states can influence this transport activity. These observations suggest that GO:1903962 is regulated in response to cellular stress and pathological conditions.
Key Genes Involved in GO:1903962 arachidonate transmembrane transporter activity
The following genes and proteins have been linked to arachidonate transport or related lipid signaling based on the cited literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| TRPV3 | Thermally activated ion channel modulated by lipids | Studied for arachidonate-sensitive channel activity |
| TRP channels (general) | Mechanotransduction and sensory signaling | Linked to lipid-dependent mechanotransduction |
| NMDA receptor subunits | Excitatory amino acid signaling | Connected to arachidonate dynamics in neurons [4,8] |
| Platelet activation proteins | Platelet function in cystic fibrosis | Associated with altered arachidonate metabolism |
| Inositol phospholipid enzymes | Membrane lipid metabolism | Provide context for arachidonate release |
| Staphylococcus aureus alpha-toxin targets | Membrane pore formation | Model for membrane lipid interactions |
| Cortical spreading depression markers | Metabolic stress response | Linked to lipid changes |
| Excitatory amino acid transporters | Neurotransmitter handling | Related to arachidonate signaling |
| TRPV3-related lipid sensors | Lipid sensing | Potential arachidonate transporters |
| Platelet cyclooxygenase pathway | Eicosanoid synthesis | Downstream of arachidonate transport |
| NMDA receptor complex | Synaptic plasticity | Arachidonate modulates NMDA function |
| Membrane remodeling enzymes | Lipid turnover | Context for arachidonate transport |
How Is arachidonate transmembrane transporter activity Regulated?
Arachidonate transmembrane transporter activity is regulated by cellular metabolic state and pathological conditions. Cortical spreading depression, a metabolic stress phenomenon, involves changes in lipid handling that may influence arachidonate transport. In cystic fibrosis, platelet activation is associated with altered arachidonate metabolism, suggesting disease-specific regulation. Additionally, ion channel activity such as TRPV3 can be modulated by arachidonate and related lipids, indicating a feedback relationship between transport and channel function.
arachidonate transmembrane transporter activity and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| TRPV3 | Lipid-sensitive channel in skin and neurons | Knockout or point-mutation cell model |
| Platelet proteins | Cystic fibrosis platelet activation | Patient-derived platelets or overexpression models |
| NMDA receptor subunits | Excitatory amino acid disorders | Knock-in or knockout neuronal cells [4,8] |
| TRP channels | Mechanotransduction defects | Knockout in dinoflagellate or mammalian cells |
| Membrane lipid enzymes | Metabolic stress | Overexpression or knockout in cortical cells |
Cystic fibrosis and platelet activation
Platelet activation in cystic fibrosis has been associated with altered arachidonate metabolism, suggesting that arachidonate transport may contribute to platelet dysfunction in this disease.
Cortical spreading depression and metabolic stress
Cortical spreading depression is a metabolic pathophysiology that involves lipid changes, and arachidonate transport may play a role in the lipid dynamics underlying this condition.
Excitatory amino acid signaling and neurological disorders
Arachidonate dynamics are connected to excitatory amino acid signaling and NMDA receptor function, which are implicated in neurological and psychiatric disorders [4,8].
From arachidonate transmembrane transporter activity-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is a candidate gene required for arachidonate transport? | Knockout cell line |
| Does a specific mutation alter transport activity? | Point-mutation knock-in |
| Can a tagged transporter be visualized? | Tagged knock-in |
| Does overexpression increase arachidonate uptake? | Overexpression cell model |
| Which genes regulate arachidonate transport? | CRISPR library screening |
| What is the transcriptional response to altered transport? | RNA-seq after knockout |
How to Study the arachidonate transmembrane transporter activity Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Lipid transport assay | Arachidonate movement across membranes | Direct measurement of GO:1903962 |
| Electrophysiology | Ion channel activity | TRPV3 modulation by lipids |
| CRISPR knockout | Loss of gene function | Testing requirement for transport [1,7] |
| RNA-seq | Transcriptional changes | Response to altered transport |
| Proteomics | Protein abundance and modifications | Identifying transport complexes |
| Live-cell imaging | Subcellular localization | Tracking tagged transporters |
| CRISPR library screening | Gene essentiality | Discovering new transport regulators |
| Metabolomics | Arachidonate metabolites | Linking transport to eicosanoids |
Lipid transport assays
Lipid transport assays using radiolabeled or fluorescent arachidonate can measure the transfer of arachidonate across membranes, providing direct evidence for GO:1903962 activity.
Electrophysiology
Electrophysiological recordings of TRP channels such as TRPV3 can reveal how arachidonate and related lipids modulate channel activity, linking transport to ion flux [1,7].
CRISPR-based gene editing
CRISPR knockout, point mutation, and knock-in models allow researchers to test the causal role of candidate genes in arachidonate transport [1,7].
Transcriptomics and proteomics
RNA-seq and proteomics can identify changes in gene expression and protein abundance associated with altered arachidonate transport, providing insights into regulatory networks [2,5].
How CRISPR Can Be Used to Study GO:1903962 arachidonate transmembrane transporter activity
Knockout
CRISPR knockout of candidate genes such as TRPV3 or TRP channels can test whether they are required for arachidonate transmembrane transport [1,7].
Point Mutation
Point mutations in transport-related genes can be introduced to assess the impact of specific amino acid changes on arachidonate transport activity.
Knock-in
Knock-in of tagged versions of candidate transporters allows visualization and biochemical isolation of the transport complex.
Overexpression
Overexpression of candidate genes can increase arachidonate transport activity and help confirm sufficiency in cellular models [1,7].
How EDITGENE Supports arachidonate transmembrane transporter activity Research
Researchers studying arachidonate transmembrane transporter activity-related genes often need to determine whether a candidate gene is causally involved in lipid transport, ion channel modulation, or disease-associated phenotypes. EDITGENE provides CRISPR-based cell model services to enable these functional studies.
Contact EDITGENE today to design your custom CRISPR model for arachidonate transmembrane transporter activity research.
Frequently Asked Questions About arachidonate transmembrane transporter activity
What is arachidonate transmembrane transporter activity?
It is a molecular function (GO:1903962) that enables the transfer of arachidonate from one side of a membrane to the other.
What genes are involved in arachidonate transmembrane transporter activity?
Genes such as TRPV3 and other TRP channels have been linked to arachidonate-sensitive processes [1,7].
What is the GO ID for arachidonate transmembrane transporter activity?
The GO ID is GO:1903962.
How is arachidonate transmembrane transporter activity studied?
It is studied using lipid transport assays, electrophysiology, and CRISPR-based gene editing [1,7].
What diseases are associated with arachidonate transport?
Cystic fibrosis platelet activation, cortical spreading depression, and excitatory amino acid disorders have been associated with arachidonate dynamics [2,4,5].
What is the difference between arachidonate transport and arachidonate metabolism?
Transport (GO:1903962) refers to membrane translocation, while metabolism involves enzymatic conversion of arachidonate [1,6].
Which channels are modulated by arachidonate?
TRPV3 and other TRP channels are modulated by arachidonate and related lipids [1,7].
Can CRISPR be used to study arachidonate transport?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models can test the role of candidate genes [1,7].
What is the role of arachidonate in the brain?
Arachidonate is connected to excitatory amino acid signaling and NMDA receptor function [4,8].
How does cortical spreading depression relate to arachidonate?
Cortical spreading depression involves metabolic and lipid changes that may depend on arachidonate transport.
Conclusion
GO:1903962 arachidonate transmembrane transporter activity is a specific molecular function that governs the movement of arachidonate across membranes. Its study is important for understanding lipid signaling, ion channel regulation, and diseases such as cystic fibrosis and neurological disorders [1,2,5]. CRISPR-based models and lipid transport assays provide powerful tools to investigate this activity and its regulators [1,7].
References
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- 2. Hill A et al.. 2024. Metabolic Pathophysiology of Cortical Spreading Depression: A Review.. Brain Sci 14(10) PMID: 39452037
- 3. Bhakdi S et al.. 1991. Alpha-toxin of Staphylococcus aureus.. Microbiol Rev 55(4):733-51 PMID: 1779933
- 4. Thomas RJ. 1995. Excitatory amino acids in health and disease.. J Am Geriatr Soc 43(11):1279-89 PMID: 7594165
- 5. O'Sullivan BP et al.. 2005. Platelet activation in cystic fibrosis.. Blood 105(12):4635-41 PMID: 15705796
- 6. Holub BJ. 1986. Metabolism and function of myo-inositol and inositol phospholipids.. Annu Rev Nutr 6:563-97 PMID: 2425833
- 7. Lindström JB et al.. 2017. Role of TRP Channels in Dinoflagellate Mechanotransduction.. Biol Bull 233(2):151-167 PMID: 29373067
- 8. Scatton B. 1993. The NMDA receptor complex.. Fundam Clin Pharmacol 7(8):389-400 PMID: 8294079
