GO:0071283 cellular response to iron(III) ion: Iron Uptake and Cellular Stress Response, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071283 describes any change in a cell's state or activity caused by an iron(III) ion stimulus, including changes in gene expression, transport, secretion, and metabolism.
• Iron(III) is the oxidized, ferric form of iron; its poor solubility means cells must reduce it or chelate it for uptake, and this process is tightly linked to respiration and proton translocation in some bacteria.
• Iron(III) exposure can inhibit DNA and RNA virus replication, showing that this response intersects directly with host-pathogen interactions.
• Fluorescent iron(III) chelators allow researchers to monitor labile iron pools in endosomes and lysosomes, linking GO:0071283 to organelle-specific iron handling.
• Fungi such as Rhodotorula mucilaginosa and Saccharomyces cerevisiae mount measurable biochemical and uptake responses to iron(III), making them tractable models for this GO term.
• Iron(III) also interacts with other metal ions such as chromium(III), producing combined cytotoxicity and genotoxicity that must be considered in experimental design.
Description
GO:0071283, cellular response to iron(III) ion, is a biological process term that captures how a cell changes its state or activity after encountering the ferric form of iron. Iron is an essential micronutrient, but its oxidized Fe(III) form is poorly soluble at neutral pH, so cells must actively sense, chelate, reduce, or transport it to maintain homeostasis. The response includes transcriptional, metabolic, and transport-related changes that allow the cell to cope with iron availability or toxicity. Understanding this process matters because iron(III) is not only a nutrient but also a stressor: it can drive oxidative chemistry, alter membrane function, and modulate host-pathogen interactions. In environmental and industrial microbiology, iron(III) exposure changes toxin synthesis and ion transport in cyanobacteria, illustrating the ecological reach of this response. In yeast and fungal systems, iron(III) uptake is a genetically tractable trait that responds to physical and chemical perturbations. For biomedical researchers, GO:0071283 provides a framework to study how cells integrate metal sensing with gene expression, organelle function, and disease-relevant stress pathways.
cellular response to iron(III) ion At A Glance
| GO ID | GO:0071283 |
|---|---|
| GO term | cellular response to iron(III) ion |
| Ontology | biological_process |
| Synonym | cellular response to iron(III) |
| Major function | Coordinating cellular changes in transport, gene expression, metabolism, and stress defense in response to ferric iron |
| Stimulus | Iron(III) ion (Fe3+) |
| Related ion chemistry | Iron(III) is the oxidized, poorly soluble form of iron that often requires reduction or chelation for cellular uptake |
| Representative organisms | Bacteria, fungi, cyanobacteria, and mammalian cells |
| Disease relevance | Iron overload, infection, oxidative stress, and metal co-exposure toxicity |
What Is GO:0071283?
In our own words, GO:0071283 refers to any cellular process that is triggered or modified by an iron(III) ion stimulus. This includes changes in cell movement, secretion, enzyme production, gene expression, and other activities that occur as a direct or indirect result of the cell encountering Fe(III). The term is deliberately broad: it does not specify a single receptor or pathway, but rather the cellular outcome of responding to ferric iron. It is a biological process term, meaning it describes a series of molecular events rather than a static component or a single catalytic activity. Researchers use it to annotate genes and pathways whose expression or activity changes when cells are exposed to iron(III), whether that exposure is nutritional, toxic, or part of a host-microbe interaction.
Why Is cellular response to iron(III) ion Important in Cell Biology?
GO:0071283 is important because iron(III) is both an essential nutrient and a potential toxin, and the cellular response to it determines whether a cell survives, adapts, or dies. This process is central to iron homeostasis, host-pathogen competition, and environmental metal stress. Because iron(III) solubility and redox chemistry differ from iron(II), cells must deploy distinct uptake and detoxification strategies, and these strategies are often conserved across bacteria, fungi, and mammals. The term also connects to human health through iron overload disorders, infection susceptibility, and the growing field of metal-based therapeutics. For researchers, GO:0071283 offers a precise annotation target for transcriptomic, proteomic, and imaging studies that examine how cells respond to ferric iron.
• Iron(III) is a major environmental and nutritional form of iron, so cellular responses to it are widespread across taxa.
• The response includes changes in ion transport, which can be measured as altered expression of transporters and channels.
• Iron(III) exposure can inhibit DNA and RNA virus replication, linking this GO term to antiviral defense.
• Labile iron(III) pools can be monitored in endosomes and lysosomes, connecting the response to organelle biology.
• Fungal and yeast models show that iron(III) uptake is responsive to physical stimuli such as pulsed electric fields.
• Combined exposure to iron(III) and chromium(III) produces cytotoxicity and genotoxicity, relevant to metal co-exposure risk assessment.
• Iron(III) sensing is part of the broader metal homeostasis network that includes zinc and other transition metals.
• Chemical tools for detecting iron(III) alongside chromium(III) and aluminium(III) are advancing, supporting mechanistic studies.
• The response is relevant to biotechnology, including control of toxin synthesis in cyanobacteria.
• Understanding GO:0071283 can inform therapeutic strategies that target iron metabolism in infection and cancer.
What Happens During cellular response to iron(III) ion?
Iron(III) sensing and signal initiation
In simple terms: The cell first notices that iron(III) is present, often through changes in metal availability or membrane interactions.
The response begins when a cell encounters iron(III) ions in its environment or within an organelle. Because iron(III) is poorly soluble, sensing may involve chelators, surface-associated reductases, or changes in the labile iron pool. In bacteria such as Shewanella putrefaciens, iron(III) can serve as a terminal electron acceptor, and its reduction is coupled to proton translocation, directly altering cellular energetics. In cyanobacteria, exposure to a flavonoid that affects iron and zinc ion transport leads to down-regulation of transport and toxin synthesis, showing that iron(III)-related signals can be integrated with secondary metabolism. These early events set the stage for downstream transcriptional and metabolic changes.
Transcriptional and metabolic reprogramming
In simple terms: The cell changes which genes are turned on or off to cope with the iron(III) stimulus.
Once iron(III) is sensed, cells alter gene expression to adjust uptake, storage, and detoxification. In Microcystis aeruginosa, exposure to 5,4'-dihydroxyflavone down-regulates genes involved in iron and zinc ion transport as well as toxin synthesis, indicating a coordinated transcriptional response to altered metal availability. In yeast, iron uptake is enhanced by pulsed electric field treatment, demonstrating that physical perturbations can modulate the iron(III) response and that this response is measurable at the level of transport activity. These changes help the cell balance iron needs against toxicity.
Ion transport and homeostasis
In simple terms: The cell moves iron(III) or related ions across membranes to keep internal levels safe.
A central outcome of GO:0071283 is the regulation of ion transport. Iron(III) must often be reduced to iron(II) before transport, or chelated and internalized through specific uptake systems. In Rhodotorula mucilaginosa and Cladosporium herbarum isolated from aquatic environments, iron(III) ions elicit biochemical responses that reflect adaptation to metal availability. In Saccharomyces cerevisiae, pulsed electric fields enhance iron uptake, showing that membrane permeability and transport activity are plastic components of the response. These transport events are essential for maintaining homeostasis and preventing iron overload.
Stress, toxicity, and interaction with other metals
In simple terms: Too much iron(III), especially with other metals, can damage the cell and trigger defense responses.
Iron(III) can participate in oxidative chemistry and, when combined with other metals such as chromium(III), produce cytotoxicity, genotoxicity, and mutagenicity. Studies in cell and microbial systems show that chromium(III) and iron(III) can inhibit DNA and RNA virus replication, indicating that the cellular response to iron(III) intersects with antiviral pathways. Fluorescent iron(III) chelators have been used to monitor endosomal and lysosomal labile iron pools, revealing that organelle-specific iron handling is part of the stress response. These findings highlight that GO:0071283 includes both adaptive and defensive components.
Detection and chemical biology of iron(III) responses
In simple terms: Scientists use special chemical probes to see where iron(III) goes and how the cell reacts.
Chemical tools are critical for studying GO:0071283. Fluorescent iron(III) chelators enable selective monitoring of endosomal and lysosomal labile iron pools, providing spatial and temporal resolution of the response. Recent reviews describe single molecular sensing tools for ternary iron(III), chromium(III), and aluminium(III) species, which support multiplexed detection in biological and environmental samples. These tools complement genetic and biochemical approaches, allowing researchers to link iron(III) exposure to specific cellular outcomes.
Key Genes Involved in GO:0071283 cellular response to iron(III) ion
The genes and proteins below are representative participants or reporters of cellular responses to iron(III), based on the cited literature; they are not an exhaustive list of every gene annotated to GO:0071283.
| Gene | Major Role | Research Relevance |
|---|---|---|
| Transporters of iron/zinc ions (e.g., in Microcystis aeruginosa) | Mediate ion uptake and efflux in response to iron(III) and other metals | Down-regulated upon flavonoid exposure, linking iron(III) response to toxin synthesis |
| Shewanella putrefaciens respiratory reductases | Couple anaerobic iron(III) reduction to proton translocation | Model for respiration-linked iron(III) response |
| Saccharomyces cerevisiae iron uptake system | Enhances iron uptake in response to physical stimuli | Demonstrates plasticity of iron(III) uptake |
| Rhodotorula mucilaginosa biochemical response factors | Coordinate biochemical adaptation to iron(III) ions | Environmental fungal model for iron(III) response |
| Cladosporium herbarum biochemical response factors | Coordinate biochemical adaptation to iron(III) ions | Environmental fungal model for iron(III) response |
| Endosomal/lysosomal labile iron pool components | Maintain organelle-specific iron(III) pools | Targets for fluorescent chelator imaging |
| DNA and RNA virus replication machinery | Inhibited by chromium(III) and iron(III) | Links iron(III) response to antiviral effects |
| Metal co-exposure response genes | Mediate cytotoxicity, genotoxicity, and mutagenicity | Relevant to chromium(III)-iron(III) interactions |
| Fluorescent iron(III) chelator targets | Report labile iron(III) in organelles | Chemical biology tools for GO:0071283 |
| Ternary metal sensing targets | Detect iron(III), chromium(III), and aluminium(III) | Supports multiplexed metal detection |
| Microcystis aeruginosa toxin synthesis genes | Regulate toxin production under metal stress | Down-regulated with iron/zinc transport changes |
| Proton translocation complexes | Link iron(III) reduction to energy conservation | Studied in Shewanella putrefaciens |
| Yeast membrane transport proteins | Facilitate iron uptake after pulsed electric field | Model for enhancing iron(III) uptake |
| Fungal stress response proteins | Protect against metal-induced damage | Studied in Rhodotorula and Cladosporium |
| Viral replication proteins | Targets of iron(III) inhibition | Relevant to antiviral mechanisms |
| Genotoxicity response proteins | Respond to combined metal exposure | Studied in cytotoxicity assays |
| Iron/zinc transport regulators | Coordinate metal homeostasis | Key nodes in cyanobacterial response |
| Labile iron pool sensors | Monitor iron(III) availability | Used with fluorescent chelators |
How Is cellular response to iron(III) ion Regulated?
The cellular response to iron(III) is regulated at multiple levels. In cyanobacteria, exposure to 5,4'-dihydroxyflavone down-regulates iron and zinc ion transport genes, indicating that secondary metabolites can modulate the response. In yeast, pulsed electric fields enhance iron uptake, showing that physical stimuli can regulate transport activity. In bacteria, iron(III) reduction is coupled to proton translocation, linking the response to respiratory energy metabolism. Combined exposure to chromium(III) and iron(III) alters cytotoxicity and genotoxicity outcomes, suggesting that metal interactions fine-tune the response. These examples indicate that GO:0071283 is not a fixed program but is dynamically regulated by chemical, physical, and biological inputs.
cellular response to iron(III) ion and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| Viral replication machinery | Viral infection | Cell culture with iron(III) and chromium(III) exposure |
| Metal co-exposure response genes | Genotoxicity and mutagenicity | Cytotoxicity and genotoxicity assays |
| Endosomal/lysosomal iron pool components | Lysosomal dysfunction and neurodegeneration | Fluorescent chelator imaging in cultured cells |
| Microcystis aeruginosa toxin synthesis genes | Cyanobacterial toxin production | Cyanobacterial cultures with flavonoid exposure |
| Yeast iron uptake system | Iron uptake enhancement | Saccharomyces cerevisiae with pulsed electric field |
Iron(III) and viral infection
Chromium(III) and iron(III) have been shown to inhibit replication of DNA and RNA viruses, suggesting that the cellular response to iron(III) can influence viral life cycles. This has implications for understanding how metal availability shapes host-pathogen interactions and for developing metal-based antiviral strategies.
Metal co-exposure and genotoxicity
Interactions between chromium(III) and iron(III) produce measurable cytotoxicity, genotoxicity, and mutagenicity in experimental systems. These findings are relevant to environmental and occupational exposure scenarios where multiple metals coexist, and they highlight the need to study GO:0071283 in the context of metal mixtures.
Lysosomal iron and disease
Fluorescent iron(III) chelators have been used to selectively monitor endosomal and lysosomal labile iron pools. Dysregulation of these pools is linked to lysosomal storage disorders and neurodegeneration, making organelle-specific iron(III) handling a disease-relevant aspect of GO:0071283.
Environmental and biotechnological relevance
In Microcystis aeruginosa, iron(III)-related transport changes are accompanied by altered toxin synthesis, which affects water quality and public health. In fungi and yeast, iron(III) uptake responses are relevant to bioremediation and industrial fermentation. These examples show that GO:0071283 has impacts beyond human disease.
From cellular response to iron(III) ion-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does a candidate gene mediate iron(III) uptake? | Knockout cell line or yeast deletion strain |
| Does a point mutation alter iron(III) sensing? | Point-mutation knock-in cell line |
| Can a tagged protein report iron(III) localization? | Tagged knock-in with fluorescent chelator imaging |
| Does overexpression of a transporter increase iron(III) response? | Overexpression cell line |
| How does iron(III) affect viral replication? | Cell culture infection model with iron(III) treatment |
| What genes are differentially expressed under iron(III) stress? | RNA-seq in wild-type and knockout cells |
How to Study the cellular response to iron(III) ion Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Changes in gene expression | Transcriptional response to iron(III) |
| Fluorescent chelator imaging | Labile iron(III) pools in organelles | Endosomal/lysosomal iron monitoring |
| Biochemical response assays | Metabolic and enzymatic changes | Fungal response to iron(III) |
| Cytotoxicity assays | Cell viability and death | Metal co-exposure studies |
| Genotoxicity assays | DNA damage and mutagenicity | Chromium(III)-iron(III) interactions |
| Pulsed electric field treatment | Iron uptake enhancement | Yeast iron transport studies |
| Viral replication assays | DNA and RNA virus replication | Antiviral effects of iron(III) |
| Ternary metal sensing | Detection of iron(III), chromium(III), aluminium(III) | Multiplexed metal analysis |
Transcriptomics and RNA-seq
RNA-seq can identify genes whose expression changes upon iron(III) exposure. In Microcystis aeruginosa, transcriptomic analysis revealed down-regulation of iron and zinc ion transport genes and toxin synthesis genes after flavonoid treatment. Similar approaches can be applied to mammalian cells to map the transcriptional landscape of GO:0071283.
Fluorescent chelator imaging
Fluorescent iron(III) chelators enable selective monitoring of endosomal and lysosomal labile iron pools. These probes can be used in live-cell imaging to track the spatial and temporal dynamics of iron(III) within organelles, providing direct evidence of the cellular response.
Biochemical and cytotoxicity assays
Biochemical response assays in fungi such as Rhodotorula mucilaginosa and Cladosporium herbarum can measure metabolic changes induced by iron(III) ions. Cytotoxicity, genotoxicity, and mutagenicity assays are used to assess the combined effects of iron(III) with other metals such as chromium(III).
Metal sensing and chemical tools
Single molecular sensing tools for ternary iron(III), chromium(III), and aluminium(III) species allow multiplexed detection in biological and environmental samples. These tools complement genetic approaches and can be used to validate iron(III) exposure conditions in cell culture.
How CRISPR Can Be Used to Study GO:0071283 cellular response to iron(III) ion
Knockout
CRISPR knockout can be used to delete candidate genes involved in iron(III) transport or sensing, such as yeast iron uptake genes, to test whether they are required for the cellular response. In mammalian cells, knockout of endosomal iron handling genes can reveal their role in labile iron pool regulation.
Point Mutation
Point mutations can be introduced into genes encoding iron transporters or sensors to dissect specific residues required for iron(III) recognition or transport. This approach is useful for separating transport activity from regulatory functions, as suggested by studies on iron(III) chelation and organelle targeting.
Knock-in
Knock-in of fluorescent or epitope tags allows real-time tracking of iron(III)-responsive proteins. Tagged knock-in models can be combined with fluorescent iron(III) chelators to correlate protein localization with labile iron pools in endosomes and lysosomes.
Overexpression
Overexpression of iron transporters or stress response genes can enhance or amplify the cellular response to iron(III). In cyanobacteria, overexpression or down-regulation of transport genes alters toxin synthesis, providing a model for manipulating GO:0071283.
How EDITGENE Supports cellular response to iron(III) ion Research
Researchers studying cellular response to iron(III) ion-related genes often need to determine whether a candidate gene is causally involved in iron sensing, transport, or stress adaptation. CRISPR-based models provide a direct way to test these hypotheses by deleting, mutating, tagging, or overexpressing the gene of interest in relevant cell types.
Contact EDITGENE today to design your custom CRISPR model for cellular response to iron(III) ion research.
Frequently Asked Questions About cellular response to iron(III) ion
What is GO:0071283?
GO:0071283 is the Gene Ontology term for cellular response to iron(III) ion, describing any change in a cell's state or activity caused by an iron(III) stimulus.
What does cellular response to iron(III) ion mean?
It means the cell changes its movement, secretion, enzyme production, gene expression, or other activities after encountering iron(III) ions.
What genes are involved in cellular response to iron(III) ion?
Genes involved include iron and zinc ion transporters, respiratory reductases, yeast iron uptake systems, and organelle iron handling proteins.
How is iron(III) different from iron(II) in cells?
Iron(III) is the oxidized, poorly soluble form that often requires reduction or chelation for uptake, whereas iron(II) is more soluble and readily transported.
Can iron(III) inhibit viruses?
Yes, chromium(III) and iron(III) have been shown to inhibit replication of DNA and RNA viruses in experimental systems.
How do researchers monitor iron(III) in cells?
Fluorescent iron(III) chelators can selectively monitor endosomal and lysosomal labile iron pools.
What model organisms are used to study iron(III) responses?
Bacteria such as Shewanella putrefaciens, fungi such as Rhodotorula mucilaginosa and Cladosporium herbarum, yeast Saccharomyces cerevisiae, and cyanobacteria are used.
Is iron(III) toxic to cells?
Iron(III) can contribute to cytotoxicity and genotoxicity, especially in combination with other metals such as chromium(III).
How does iron(III) affect cyanobacteria?
In Microcystis aeruginosa, iron(III)-related transport changes are accompanied by down-regulation of toxin synthesis genes.
What CRISPR models are available for iron(III) response studies?
Knockout, point mutation, knock-in, and overexpression models can be generated to study genes involved in GO:0071283.
Conclusion
GO:0071283, cellular response to iron(III) ion, is a biologically broad and experimentally tractable process that spans nutrient uptake, stress defense, and host-pathogen interactions. The cited literature shows that iron(III) triggers measurable changes in gene expression, ion transport, organelle iron pools, and viral replication, with important implications for environmental and human health. By combining CRISPR models with transcriptomics, imaging, and biochemical assays, researchers can dissect the mechanisms underlying this response and identify new targets for intervention.
References
- 1. Yu S et al.. 2023. Down-regulation of iron/zinc ion transport and toxin synthesis in Microcystis aeruginosa exposed to 5,4'-dihydroxyflavone.. J Hazard Mater 460:132396 PMID: 37672994
- 2. Terpiłowska S et al.. 2017. Chromium(III) and iron(III) inhibits replication of DNA and RNA viruses.. Biometals 30(4):565-574 PMID: 28612172
- 3. Fakih S et al.. 2008. Targeting the lysosome: fluorescent iron(III) chelators to selectively monitor endosomal/lysosomal labile iron pools.. J Med Chem 51(15):4539-52 PMID: 18624421
- 4. Cudowski A et al.. 2019. Biochemical response of Rhodotorula mucilaginosa and Cladosporium herbarum isolated from aquatic environment on iron(III) ions.. Sci Rep 9(1):19492 PMID: 31862957
- 5. Terpilowska S et al.. 2018. Interactions between chromium(III) and iron(III), molybdenum(III) or nickel(II): Cytotoxicity, genotoxicity and mutagenicity studies.. Chemosphere 201:780-789 PMID: 29550572
- 6. Myers CR et al.. 1990. Respiration-linked proton translocation coupled to anaerobic reduction of manganese(IV) and iron(III) in Shewanella putrefaciens MR-1.. J Bacteriol 172(11):6232-8 PMID: 2172208
- 7. Nowosad K et al.. 2021. Pulsed Electric Field (PEF) Enhances Iron Uptake by the Yeast Saccharomyces cerevisiae.. Biomolecules 11(6) PMID: 34200319
- 8. Saha S et al.. 2023. Recent developments in the creation of a single molecular sensing tool for ternary iron (III), chromium (III), aluminium (III) ionic species: A review.. Luminescence 38(7):1026-1046 PMID: 36251318
