GO:0071577 zinc ion transmembrane transport: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071577 (zinc ion transmembrane transport) describes the movement of a zinc II ion across a membrane via a transporter or pore.
• Zinc transport is mediated by two major families: SLC30A (ZnT) exporters and SLC39A (ZIP) importers, plus channels such as TRPML1.
• Transepithelial zinc transport is a key mediator of intestinal adaptation after massive small bowel resection.
• Somatic SLC30A1 mutations altering ZnT1 cause aldosterone-producing adenomas and primary aldosteronism.
• Zinc transport can be modulated by environmental metals such as cadmium in hyperaccumulator plants and by flavonoids in cyanobacteria.
• CRISPR knockout, point-mutation, knock-in and overexpression models enable causal testing of zinc transporter genes.
Description
Zinc is an essential trace element required for the catalytic activity of hundreds of enzymes, for structural stability of transcription factors, and for cellular signalling. Because zinc cannot freely cross lipid bilayers, its distribution between the extracellular space, the cytosol, and intracellular organelles depends on dedicated transmembrane transport proteins. The Gene Ontology term GO:0071577, zinc ion transmembrane transport, captures the process in which a zinc II ion is moved from one side of a membrane to the other by means of some agent such as a transporter or pore. This process is fundamental to zinc homeostasis and is conserved from bacteria to humans. Researchers study zinc ion transmembrane transport because its dysregulation is linked to human disease. For example, somatic mutations in SLC30A1, which encodes the zinc exporter ZnT1, cause aldosterone-producing adenomas and primary aldosteronism. In the intestine, transepithelial zinc transport has been identified as a key mediator of adaptation after massive small bowel resection using xenotransplanted human organoids. In plants and microorganisms, zinc transport is modulated by environmental factors such as cadmium and flavonoids, highlighting its broad biological relevance. Understanding the molecular players, regulation, and experimental methods for zinc ion transmembrane transport is therefore essential for basic cell biology, disease modelling, and therapeutic development. This article summarizes the authoritative GO definition, the major gene families, disease associations, and the CRISPR-based approaches used to interrogate this process.
zinc ion transmembrane transport At A Glance
| GO ID | GO:0071577 |
|---|---|
| GO term | zinc ion transmembrane transport |
| Ontology | biological_process |
| Synonym | zinc II ion transmembrane transport; zinc ion membrane transport; zinc transmembrane transport |
| Definition | A process in which a zinc II ion is transported from one side of a membrane to the other by means of some agent such as a transporter or pore. |
| Major function | Maintains cellular and organellar zinc homeostasis by moving Zn2+ across membranes. |
| Representative transporters | SLC30A/ZnT exporters, SLC39A/ZIP importers, TRPML1 channel, TMEM163. |
| Disease relevance | Aldosterone-producing adenomas, intestinal adaptation, metal toxicity responses. |
What Is GO:0071577?
GO:0071577 (zinc ion transmembrane transport) is a biological process defined as the movement of a zinc II ion from one side of a membrane to the other by means of some agent such as a transporter or pore. It includes transport across the plasma membrane and across organellar membranes, and it is carried out by dedicated zinc transporters, channels, or pores rather than by free diffusion.
Why Is zinc ion transmembrane transport Important in Cell Biology?
Zinc ion transmembrane transport is important because it controls the availability of zinc for essential cellular processes and because its disruption is directly implicated in human disease. Somatic mutations in SLC30A1 alter ZnT1 function and cause aldosterone-producing adenomas and primary aldosteronism, demonstrating that a single transporter can drive endocrine pathology. In the intestine, transepithelial zinc transport is a key mediator of adaptation after massive small bowel resection, as shown using xenotransplanted human organoids. Zinc transport also participates in responses to environmental metals and toxins in plants and cyanobacteria. Consequently, this GO term is a focal point for studies of metal homeostasis, endocrinology, gastroenterology, and environmental biology.
• Maintains cytosolic and organellar zinc homeostasis required for enzyme catalysis and signalling.
• SLC30A1/ZnT1 mutations cause aldosterone-producing adenomas and primary aldosteronism.
• Transepithelial zinc transport mediates intestinal adaptation after massive small bowel resection.
• Lysosomal zinc handling involves TRPML1 and TMEM163, linking transport to organellar function.
• Zinc transport is modulated by cadmium in hyperaccumulator plants, relevant to phytoremediation.
• Flavonoid exposure down-regulates iron/zinc ion transport in Microcystis aeruginosa.
• Provides targets for cancer, endocrine, and gastrointestinal disease research.
• Enables mechanistic studies using in vitro zinc transport assays.
• Supports CRISPR-based causal validation of transporter genes.
• Connects metal homeostasis to toxin synthesis and environmental stress responses.
What Happens During zinc ion transmembrane transport?
Substrate recognition and binding
In simple terms: The transporter first grabs the zinc ion.
Zinc transporters must selectively recognize Zn2+ among other divalent cations. Structural and computational studies of the YiiP zinc transporter reveal a mechanism in which zinc binding sites within the transmembrane domain coordinate the ion before translocation. In mammalian cells, SLC30A/ZnT and SLC39A/ZIP families provide the binding specificity that initiates transport. This step ensures that only zinc II ions are moved across the membrane, consistent with the GO definition.
Conformational change and translocation
In simple terms: The transporter changes shape to push the ion through.
After binding, the transporter undergoes conformational changes that move the zinc ion from one side of the membrane to the other. Molecular dynamics and free-energy calculations on YiiP support an alternating-access mechanism in which the ion is handed from one binding site to another across the membrane. In vitro zinc transport assays using mammalian zinc transporters allow direct measurement of this translocation step. The process is energy-dependent or gradient-driven depending on the transporter family, but always results in net zinc movement across the bilayer.
Organellar zinc transport
In simple terms: Zinc is also moved into and out of organelles like lysosomes.
Zinc ion transmembrane transport is not limited to the plasma membrane. The mucolipin-1 (TRPML1) ion channel and transmembrane-163 (TMEM163) protein participate in lysosomal zinc handling, influencing intra-lysosomal zinc and pH. Live imaging of intra-lysosomal pH using genetically encoded biosensors has helped characterize these organellar transport events. These pathways connect zinc transport to lysosomal function and autophagy-related processes.
Transepithelial zinc transport
In simple terms: Zinc crosses entire cell layers in the intestine.
In epithelial tissues, zinc must cross both the apical and basolateral membranes to be absorbed. Xenotransplanted human organoids have identified transepithelial zinc transport as a key mediator of intestinal adaptation after massive small bowel resection. This requires coordinated activity of importers and exporters on opposite membrane domains, illustrating how GO:0071577 operates at the tissue level.
Modulation by environmental factors
In simple terms: Other metals and chemicals can change how zinc is transported.
Zinc transport is modulated by external cues. In the Cd/Zn hyperaccumulator Sedum alfredii, cadmium modulates both symplasmic and transmembrane zinc transport. In the cyanobacterium Microcystis aeruginosa, exposure to 5,4'-dihydroxyflavone down-regulates iron/zinc ion transport and toxin synthesis. These examples show that GO:0071577 is responsive to environmental metal and chemical stress.
Key Genes Involved in GO:0071577 zinc ion transmembrane transport
The following genes and proteins are experimentally implicated in zinc ion transmembrane transport (GO:0071577) according to the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| SLC30A1 (ZnT1) | Zinc exporter; mutations cause aldosterone-producing adenomas | Endocrine disease modelling; point-mutation and knockout studies |
| SLC39A (ZIP) family | Zinc importers mediating cellular zinc uptake | In vitro zinc transport assays; overexpression and knockout |
| SLC30A (ZnT) family | Zinc exporters mediating cellular zinc efflux | In vitro zinc transport assays; knockout and overexpression |
| TRPML1 (MCOLN1) | Lysosomal zinc channel involved in organellar zinc handling | Lysosomal zinc and pH imaging; knockout models |
| TMEM163 | Lysosomal zinc handling protein | Organellar zinc transport studies; knockout and tagged knock-in |
| YiiP (bacterial) | Prototypical zinc transporter for mechanistic studies | Computational and structural analysis of transport mechanism |
| Microcystis aeruginosa transport genes | Iron/zinc ion transport down-regulated by flavonoid | Environmental stress and toxin synthesis studies |
| Sedum alfredii transport genes | Symplasmic and transmembrane zinc transport modulated by cadmium | Phytoremediation and metal hyperaccumulation research |
| Intestinal zinc transport genes | Mediate transepithelial zinc transport in adaptation | Organoid xenotransplantation and intestinal adaptation studies |
| Lysosomal pH regulatory genes | Influence intra-lysosomal environment for zinc transport | Live imaging with genetically encoded biosensors |
| SLC30A1 mutant variants | Alter ZnT1 function in adenomas | Somatic mutation modelling with CRISPR point mutation |
| ZIP transporters (mammalian) | Zinc uptake across plasma membrane | In vitro transport assays and CRISPR knockout |
| ZnT transporters (mammalian) | Zinc efflux across plasma membrane | In vitro transport assays and CRISPR knockout |
| TRPML1 channel complex | Lysosomal zinc and cation transport | Patch-clamp and imaging; knockout and knock-in |
| TMEM163 complex | Lysosomal zinc handling | Organellar transport assays; tagged knock-in |
| Cadmium-responsive plant transporters | Modulate zinc transport under Cd stress | Plant genetic models and transport assays |
| Flavonoid-responsive cyanobacterial transporters | Down-regulated by 5,4'-dihydroxyflavone | Environmental microbiology and toxin synthesis studies |
| Intestinal adaptation transporters | Transepithelial zinc transport in organoids | Human organoid xenotransplantation |
How Is zinc ion transmembrane transport Regulated?
Zinc ion transmembrane transport is regulated at multiple levels. Transcriptional and post-transcriptional control of SLC30A and SLC39A family members adjusts transport capacity in response to zinc status. In lysosomes, the intra-lysosomal pH and the activity of channels such as TRPML1 influence zinc handling, and live imaging of lysosomal pH has revealed dynamic regulation of this compartment. Environmental factors also regulate transport: cadmium modulates symplasmic and transmembrane zinc transport in Sedum alfredii, and 5,4'-dihydroxyflavone down-regulates iron/zinc ion transport in Microcystis aeruginosa. In disease contexts, somatic mutations in SLC30A1 alter ZnT1 function, providing a genetic mechanism of dysregulation.
zinc ion transmembrane transport and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| SLC30A1 | Aldosterone-producing adenomas; primary aldosteronism | CRISPR point-mutation knock-in of somatic variants in adrenal cell lines |
| Intestinal zinc transporters | Short bowel syndrome; intestinal adaptation | Human intestinal organoid xenotransplantation |
| TRPML1 (MCOLN1) | Lysosomal dysfunction; neurodegeneration | Knockout and knock-in in neuronal cultures with lysosomal pH biosensors |
| TMEM163 | Lysosomal zinc handling; organellar dysfunction | Tagged knock-in and knockout in cell lines |
| SLC39A/SLC30A families | Zinc homeostasis disorders | In vitro zinc transport assays with CRISPR knockout and overexpression |
Primary aldosteronism and adrenal adenomas
Somatic mutations in SLC30A1 that alter the zinc transporter ZnT1 cause aldosterone-producing adenomas and primary aldosteronism. This establishes zinc ion transmembrane transport as a directly causal process in an endocrine disease and provides a clear example of how a single transporter can drive tumour formation.
Intestinal adaptation and short bowel syndrome
Xenotransplanted human organoids have identified transepithelial zinc transport as a key mediator of intestinal adaptation after massive small bowel resection. This links GO:0071577 to the pathophysiology of short bowel syndrome and to potential strategies for enhancing intestinal adaptation.
Lysosomal dysfunction and neurodegeneration
TRPML1 and TMEM163 are involved in lysosomal zinc handling, and disruption of lysosomal zinc transport may contribute to lysosomal storage disorders and neurodegeneration. Live imaging of intra-lysosomal pH in neurons using genetically encoded biosensors provides tools to study these mechanisms.
Metal toxicity and environmental stress
Cadmium modulates zinc transport in the hyperaccumulator Sedum alfredii, and flavonoid exposure down-regulates zinc transport in Microcystis aeruginosa. These findings connect zinc ion transmembrane transport to metal toxicity, phytoremediation, and cyanobacterial toxin production.
From zinc ion transmembrane transport-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of a zinc transporter alter cellular zinc homeostasis? | CRISPR knockout of SLC30A or SLC39A genes followed by in vitro zinc transport assay |
| Do somatic SLC30A1 mutations drive aldosterone production? | CRISPR point-mutation knock-in of SLC30A1 variants in adrenal cell models |
| Can transepithelial zinc transport be enhanced in short bowel syndrome? | Human intestinal organoid xenotransplantation with transporter overexpression |
| How does TRPML1 regulate lysosomal zinc and pH? | Knockout and tagged knock-in of TRPML1 with live lysosomal pH imaging |
| What is the effect of cadmium on plant zinc transport? | Plant genetic models with transporter knockout or overexpression |
| Does flavonoid exposure change cyanobacterial zinc transport? | Microcystis aeruginosa exposure experiments with transport gene expression analysis |
How to Study the zinc ion transmembrane transport Process
| Method | What It Measures | Typical Application |
|---|---|---|
| In vitro zinc transport assay | Direct zinc transport activity of transporters | Characterizing SLC30A/SLC39A function |
| Live lysosomal pH imaging | Intra-lysosomal pH dynamics | Studying TRPML1/TMEM163 in neurons |
| Molecular dynamics simulation | Zinc binding and translocation mechanism | Mechanistic analysis of YiiP |
| Organoid xenotransplantation | Transepithelial zinc transport in tissue | Intestinal adaptation research |
| Gene expression analysis | Transcript levels of transport genes | Environmental stress response studies |
| CRISPR knockout | Loss-of-function effects on zinc transport | Causal gene validation |
| CRISPR point mutation | Effect of specific somatic variants | Modelling SLC30A1 mutations |
| Tagged knock-in | Localization and dynamics of transporters | Organellar zinc transport studies |
In vitro zinc transport assays
In vitro zinc transport assays using mammalian zinc transporters allow direct measurement of transport activity and are suitable for characterizing SLC30A and SLC39A family members. These assays can be combined with CRISPR knockout or overexpression to test causality.
Live imaging of organellar zinc and pH
Genetically encoded biosensors enable live imaging of intra-lysosomal pH in cell lines and primary neuronal cultures, which is critical for studying lysosomal zinc transport by TRPML1 and TMEM163. This approach reveals dynamic changes in the organellar environment that accompany zinc transport.
Computational and structural analysis
Molecular dynamics and free-energy calculations on the YiiP transporter provide mechanistic insight into zinc binding and translocation, complementing experimental transport assays. Such computational methods help identify key residues for subsequent CRISPR mutagenesis.
Organoid and xenotransplantation models
Xenotransplanted human organoids have been used to identify transepithelial zinc transport as a key mediator of intestinal adaptation, demonstrating the value of organoid models for studying GO:0071577 in a tissue context. These models can be combined with CRISPR editing to test specific transporters.
How CRISPR Can Be Used to Study GO:0071577 zinc ion transmembrane transport
Knockout
CRISPR knockout of zinc transporter genes such as SLC30A1 or SLC39A family members enables loss-of-function studies to determine their contribution to cellular zinc homeostasis. Knockout models can be combined with in vitro zinc transport assays to quantify the impact on GO:0071577.
Point Mutation
CRISPR point mutation is used to introduce specific somatic variants, such as those in SLC30A1 that cause aldosterone-producing adenomas, allowing direct testing of their functional consequences. This approach is essential for distinguishing driver mutations from passenger changes.
Knock-in
Knock-in of tagged transporters, such as TRPML1 or TMEM163, allows visualization and biochemical isolation of transport complexes involved in lysosomal zinc handling. Tagged knock-in models are valuable for live imaging and proteomic studies.
Overexpression
CRISPR-mediated overexpression of zinc transporters can enhance transepithelial zinc transport in organoid models, providing a gain-of-function approach to study intestinal adaptation. Overexpression is also useful for in vitro transport assays to measure maximal transport capacity.
How EDITGENE Supports zinc ion transmembrane transport Research
Researchers studying zinc ion transmembrane transport-related genes often need to determine whether a candidate gene is causally involved in zinc movement, disease pathology, or environmental responses. EDITGENE provides the CRISPR tools and services required to generate precisely engineered cell models for such causal studies.
Contact EDITGENE today to design your custom CRISPR model for zinc ion transmembrane transport research.
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| TRPM3 Knockout HEK293 Cell Line | EDJ-KQ155 | Human | 80036 | Details Get a Quote |
| TRPM2 Knockout HEK293 Cell Line | EDJ-KQ1053 | Human | 7226 | Details Get a Quote |
| SLC39A13 Knockout HEK293 Cell Line | EDJ-KQ1374 | Human | 91252 | Details Get a Quote |
| SLC39A14 Knockout HEK293 Cell Line | EDJ-KQ2426 | Human | 23516 | Details Get a Quote |
| SLC30A7 Knockout HEK293 Cell Line | EDJ-KQ2455 | Human | 148867 | Details Get a Quote |
| TRPM7 Knockout HEK293 Cell Line | EDJ-KQ2654 | Human | 54822 | Details Get a Quote |
| SLC30A1 Knockout HEK293 Cell Line | EDC08069 | Human | 7779 | Details Get a Quote |
| SLC1A1 Knockout HEK293 Cell Line | EDJ-KQ5760 | Human | 6505 | Details Get a Quote |
| SLC11A1 Knockout HEK293 Cell Line | EDJ-KQ5781 | Human | 6556 | Details Get a Quote |
| SLC30A3 Knockout HEK293 Cell Line | EDC08012 | Human | 7781 | Details Get a Quote |
| SLC30A2 Knockout HEK293 Cell Line | EDJ-KQ6119 | Human | 7780 | Details Get a Quote |
| SLC30A4 Knockout HEK293 Cell Line | EDJ-KQ6120 | Human | 7782 | Details Get a Quote |
| SLC39A1 Knockout HEK293 Cell Line | EDC08027 | Human | 27173 | Details Get a Quote |
| SLC39A3 Knockout HEK293 Cell Line | EDJ-KQ9119 | Human | 29985 | Details Get a Quote |
| SLC39A2 Knockout HEK293 Cell Line | EDJ-KQ9120 | Human | 29986 | Details Get a Quote |
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Frequently Asked Questions About zinc ion transmembrane transport
What is zinc ion transmembrane transport?
Zinc ion transmembrane transport (GO:0071577) is the process in which a zinc II ion is moved from one side of a membrane to the other by a transporter or pore.
What genes are involved in zinc ion transmembrane transport?
Key genes include SLC30A1 (ZnT1), the SLC30A and SLC39A families, TRPML1, and TMEM163.
Why is zinc ion transmembrane transport important?
It maintains zinc homeostasis and is linked to diseases such as aldosterone-producing adenomas and intestinal adaptation disorders.
How is zinc ion transmembrane transport studied?
Methods include in vitro zinc transport assays, live lysosomal pH imaging, molecular dynamics simulations, and organoid xenotransplantation.
What diseases are associated with zinc transporter mutations?
Somatic SLC30A1 mutations cause aldosterone-producing adenomas and primary aldosteronism.
Can CRISPR be used to study zinc ion transmembrane transport?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models enable causal testing of zinc transporter genes.
What is the role of TRPML1 in zinc transport?
TRPML1 is a lysosomal ion channel involved in lysosomal zinc handling along with TMEM163.
How does cadmium affect zinc transport?
Cadmium modulates symplasmic and transmembrane zinc transport in the hyperaccumulator Sedum alfredii.
What is transepithelial zinc transport?
It is the coordinated movement of zinc across epithelial cell layers, identified as a key mediator of intestinal adaptation.
Which model systems are used for zinc transport research?
Models include mammalian cell lines, primary neuronal cultures, human intestinal organoids, plants, and bacteria.
Conclusion
GO:0071577 (zinc ion transmembrane transport) is a fundamental biological process that controls zinc distribution across cellular and organellar membranes. Its molecular players include SLC30A/ZnT exporters, SLC39A/ZIP importers, TRPML1, and TMEM163, and its dysfunction is directly linked to endocrine disease, intestinal adaptation, and environmental metal responses. Continued research using CRISPR-based models and advanced imaging will further clarify how zinc transport is regulated and how it can be targeted therapeutically.
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. Sampah MES et al.. 2024. Xenotransplanted human organoids identify transepithelial zinc transport as a key mediator of intestinal adaptation.. Nat Commun 15(1):8613 PMID: 39375337
- 3. Cuajungco MP et al.. 2017. The mucolipin-1 (TRPML1) ion channel, transmembrane-163 (TMEM163) protein, and lysosomal zinc handling.. Front Biosci (Landmark Ed) 22(8):1330-1343 PMID: 28199205
- 4. Cao K et al.. 2024. Symplasmic and transmembrane zinc transport is modulated by cadmium in the Cd/Zn hyperaccumulator Sedum alfredii.. Ecotoxicol Environ Saf 275:116272 PMID: 38564870
- 5. Sharma G et al.. 2022. Mechanism of Zinc Transport through the Zinc Transporter YiiP.. J Chem Theory Comput 18(4):2556-2568 PMID: 35226479
- 6. Ponsford AH et al.. 2021. Live imaging of intra-lysosome pH in cell lines and primary neuronal culture using a novel genetically encoded biosensor.. Autophagy 17(6):1500-1518 PMID: 32515674
- 7. Rege J et al.. 2023. Somatic SLC30A1 mutations altering zinc transporter ZnT1 cause aldosterone-producing adenomas and primary aldosteronism.. Nat Genet 55(10):1623-1631 PMID: 37709865
- 8. Ben Yosef TE et al.. 2023. Characterizing Mammalian Zinc Transporters Using an In Vitro Zinc Transport Assay.. J Vis Exp PMID: 37335097
