GO:0071535 RING-like zinc finger domain binding: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071535 RING-like zinc finger domain binding is a molecular function describing the selective binding of a protein to a RING-like zinc finger domain, a zinc-coordinating fold related to the C3HC4 RING finger.
• RING-like domains are found in diverse proteins including coatomer alpha-COP, UBR-box proteins, MID1, MuRF1, arterivirus helicases, and biomineralization proteins, where they mediate protein-protein interactions and self-association.
• The RING-like fold is defined by a binuclear zinc-binding architecture that can be recognized by partner proteins through surface features rather than a single consensus sequence.
• Binding to RING-like zinc finger domains is experimentally studied using structural biology, yeast two-hybrid, co-immunoprecipitation, and CRISPR-based perturbation of the interacting partners.
• Dysregulation of RING-like domain interactions has been linked to viral pathogenesis, developmental disorders, and cancer-related signaling, making these domains attractive drug targets.
• CRISPR knockout, point-mutation, knock-in, and overexpression models enable causal testing of RING-like domain binding in human cells and model organisms.
Description
GO:0071535 RING-like zinc finger domain binding is a molecular function term that describes the binding of a protein to a RING-like zinc finger domain, a zinc-coordinating structural motif related to the canonical C3HC4 RING finger. RING-like domains are widespread in eukaryotic and viral proteomes and often serve as protein-protein interaction modules that recruit binding partners to multi-protein complexes. The term is distinct from generic zinc ion binding because it specifies recognition of a folded RING-like domain rather than coordination of zinc by the binding protein itself. Understanding this function is important because RING-like domains participate in processes ranging from coatomer assembly and protein quality control to viral replication and biomineralization. Researchers studying GO:0071535 aim to identify which proteins bind RING-like domains, how binding specificity is achieved, and how these interactions can be perturbed for therapeutic benefit. The availability of structural and functional data for RING-like folds such as the MID1 B-box2, MuRF1 B-box2, and the UBR-box has provided a framework for predicting and testing new binding events.
RING-like zinc finger domain binding At A Glance
| GO ID | GO:0071535 |
|---|---|
| GO term | RING-like zinc finger domain binding |
| Ontology | molecular_function |
| Synonym | None listed in QuickGO |
| Definition | Binding to a RING-like zinc finger domain of a protein; the RING-like domain is a zinc finger domain related to the C3HC4 RING finger domain. |
| Major function | Mediates selective protein-protein recognition of RING-like zinc finger folds in partner proteins. |
| Representative domains | RING-like folds including B-box, UBR-box, and variant RING sequences in coatomer, viral helicases, and biomineralization proteins. |
| Related structural motif | Binuclear zinc-binding treble clef and RING-like folds. |
| Experimental evidence types | Solution NMR structures, X-ray crystallography, yeast two-hybrid, co-immunoprecipitation, and mutational analysis. |
What Is GO:0071535?
In our own words, GO:0071535 describes the activity of a protein that selectively binds to a RING-like zinc finger domain of another protein. The RING-like domain is a zinc finger fold evolutionarily and structurally related to the C3HC4 RING finger, typically using a binuclear zinc-binding site to stabilize a compact globular structure. Binding to this domain can be mediated by surface patches, hydrophobic grooves, or electrostatic complementarity, and it often serves to nucleate or regulate protein complexes. The term is a molecular function, not a biological process or cellular component, and it should be used when the experimentally demonstrated activity is recognition of a RING-like domain, not merely zinc binding or generic protein binding.
Why Is RING-like zinc finger domain binding Important in Cell Biology?
GO:0071535 is important because RING-like zinc finger domains are recurrent interaction hubs in proteins that control coatomer trafficking, ubiquitin-proteasome substrate recognition, developmental signaling, and viral replication. Defects in these interactions can alter protein stability, complex assembly, and cellular responses to stress, with direct implications for human disease. Because RING-like folds are structurally distinct from canonical RING fingers, they offer opportunities for selective pharmacological targeting and for designing CRISPR models that dissect binding interfaces.
• RING-like domains are found in essential trafficking proteins such as alpha-COP, where a novel C-terminal RING finger contributes to coatomer function.
• The UBR-box is a binuclear RING-like treble clef zinc finger that mediates recognition of N-degron substrates in the N-end rule pathway.
• MID1 B-box2 adopts an evolutionarily conserved RING fold, linking RING-like binding to developmental signaling and Opitz G/BBB syndrome biology.
• Arterivirus helicases contain a complex zinc-binding domain resembling nonsense-mediated mRNA decay helicases, highlighting viral exploitation of RING-like folds.
• The RING finger protein ZIN interacts with HIV-1 Vif, showing that RING-like binding can modulate viral infectivity.
• An unusual RING-like sequence in the biomineralization protein AP7 demonstrates that RING-like folds occur outside classical signaling contexts.
• hDKIR, a human kelch protein homolog, participates in ring-like structures, connecting RING-like binding to cytoskeletal and cell-cycle organization.
• MuRF1 B-box2 self-association reveals a novel interaction pattern within a RING-like fold, relevant to muscle atrophy signaling.
• CRISPR-based knockout and point-mutation models allow causal testing of RING-like domain binding in human cells.
• RING-like domain interfaces are candidate targets for antiviral and anticancer intervention.
Molecular Mechanism of RING-like zinc finger domain binding
Recognition of the RING-like fold
In simple terms: A binding protein recognizes the three-dimensional shape of a RING-like zinc finger domain.
Binding to a RING-like zinc finger domain begins with structural recognition of the folded domain rather than a linear peptide sequence. The RING-like fold is stabilized by zinc coordination and presents a compact surface that can be engaged by partner proteins. Solution structures of MID1 B-box2 and MuRF1 B-box2 show that the RING-like architecture creates defined surface patches suitable for protein-protein contacts. The UBR-box, a binuclear RING-like treble clef zinc finger, similarly uses its folded scaffold to recognize specific substrates.
Zinc-dependent conformational stability
In simple terms: Zinc holds the RING-like domain in the right shape so it can be bound.
Zinc coordination is essential for maintaining the RING-like fold. The MID1 B-box2 CHC(D/C)C2H2 zinc-binding domain requires zinc for its conserved RING fold, and removal of zinc disrupts the structure. The arterivirus helicase zinc-binding domain also depends on zinc for its regulatory function. Because zinc occupancy controls fold integrity, binding to RING-like domains is sensitive to cellular zinc availability and to mutations in zinc-coordinating residues.
Interface formation and self-association
In simple terms: RING-like domains can bind partners or pair with each other.
Some RING-like domains engage in self-association, as shown for MuRF1 B-box2, which forms a novel self-association pattern within a RING-like fold. This self-association can create higher-order assemblies that recruit additional binding proteins. In the coatomer protein alpha-COP, a novel C-terminal RING finger may contribute to intra- or intermolecular contacts that support coatomer assembly. These observations indicate that GO:0071535 can describe both heterotypic and homotypic recognition events.
Functional consequences of binding
In simple terms: Once bound, the interaction changes what the partner protein can do.
Binding to a RING-like domain can alter enzymatic activity, substrate selection, or localization of the partner. The UBR-box uses its RING-like fold to bind N-degron substrates and deliver them to the N-end rule pathway. The RING finger protein ZIN interacts with HIV-1 Vif, potentially modulating Vif function during infection. In biomineralization, an unusual RING-like sequence in AP7 may coordinate protein-mineral interactions. Thus, GO:0071535 is mechanistically linked to downstream cellular outcomes rather than being a passive binding event.
Regulation by cellular context
In simple terms: The cell can tune these interactions by changing protein levels or modifications.
The availability of RING-like domain-containing proteins and their binding partners is regulated by transcription, translation, and degradation. hDKIR is involved in ring-like structures that are cell-cycle dependent, suggesting temporal control of RING-like interactions. Viral proteins such as arterivirus helicase and HIV-1 Vif can hijack RING-like binding to favor replication. These examples show that GO:0071535 activity is context-dependent and can be rewired during infection or disease.
Key Genes Involved in GO:0071535 RING-like zinc finger domain binding
The following genes and proteins are experimentally linked to RING-like zinc finger domain binding or to the RING-like domains that are recognized in this function.
| Gene | Major Role | Research Relevance |
|---|---|---|
| COPA (alpha-COP) | Coatomer subunit with a novel C-terminal RING finger | Model for RING-like domain function in vesicular trafficking |
| UBR1/UBR2 | Contain UBR-box, a binuclear RING-like treble clef zinc finger | Study of N-degron recognition and N-end rule pathway |
| MID1 | B-box2 domain adopts a conserved RING fold | Developmental signaling and Opitz G/BBB syndrome research |
| MID2 | B-box2 RING-like domain | Comparative structural studies of RING-like folds |
| MuRF1 (TRIM63) | B-box2 RING-like domain with self-association | Muscle atrophy signaling and protein interaction studies |
| TRIM family members | RING-like B-box domains | Broad family of RING-like interaction modules |
| ZIN (RNF34-like) | RING finger protein interacting with HIV-1 Vif | Antiviral restriction and Vif biology |
| HIV-1 Vif | Viral protein bound by ZIN | Host-virus interaction studies |
| AP7 | Extracellular biomineralization protein with unusual RING-like sequence | Biomineralization and non-canonical RING-like folds |
| hDKIR | Human kelch protein homolog in ring-like structures | Cell-cycle and cytoskeletal organization |
| Arterivirus nsp10/helicase | Complex zinc-binding domain resembling NMD helicase | Viral replication and RING-like domain mimicry |
| NMD helicase (UPF1-like) | Zinc-binding domain related to arterivirus helicase | RNA surveillance and RING-like domain comparison |
| C3HC4 RING finger proteins | Canonical RING domain reference | Structural comparison to RING-like folds |
| B-box proteins | Zinc-binding domains related to RING | Interaction and structural studies |
| UBR-box proteins | Binuclear RING-like treble clef | Substrate recognition studies |
| Kelch-repeat proteins | Scaffold proteins forming ring-like structures | Protein-protein interaction research |
| Vif-interacting host factors | Host proteins binding HIV-1 Vif | Antiviral target discovery |
How Is RING-like zinc finger domain binding Regulated?
Regulation of RING-like zinc finger domain binding occurs at multiple levels. Zinc availability and zinc-coordinating residue integrity control the folded state of the RING-like domain, as shown for MID1 B-box2 and the arterivirus helicase zinc-binding domain. Protein abundance and turnover of both the RING-like domain-containing protein and its binding partner determine interaction probability; hDKIR-associated ring-like structures are cell-cycle regulated. Post-translational modifications and self-association can further tune binding, as illustrated by MuRF1 B-box2 self-association. Viral proteins such as HIV-1 Vif can also modulate these interactions to promote infection.
RING-like zinc finger domain binding and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| MID1 | Developmental signaling and Opitz G/BBB syndrome | Knockout and point-mutation cell lines; structural binding assays |
| HIV-1 Vif / ZIN | Viral infectivity and host restriction | Overexpression and knockout of ZIN in HIV infection models |
| UBR1/UBR2 | N-end rule pathway and protein quality control in cancer | Knockout of UBR-box recognition; degron reporter assays |
| MuRF1 (TRIM63) | Muscle atrophy signaling | Knockout and knock-in of B-box2 mutations in muscle cells |
| Arterivirus helicase | Viral replication and RNA surveillance mimicry | Viral reverse genetics and zinc-binding domain mutants |
Developmental disorders and MID1
MID1 B-box2 adopts an evolutionarily conserved RING fold, and mutations affecting this domain have been studied in the context of developmental signaling. Because RING-like domains mediate protein-protein interactions, disruption of MID1 binding events may contribute to developmental phenotypes. Research using structural and cellular models can clarify how RING-like domain binding by MID1 affects downstream pathways.
Viral pathogenesis
RING-like zinc finger domain binding is exploited by viruses. The RING finger protein ZIN interacts with HIV-1 Vif, and this interaction may influence viral infectivity. Arterivirus helicases contain a complex zinc-binding domain resembling a nonsense-mediated mRNA decay helicase, suggesting that RING-like folds are important for viral replication. These findings support antiviral strategies that target RING-like domain interfaces.
Cancer and protein quality control
UBR-box proteins use a binuclear RING-like treble clef zinc finger to recognize N-degron substrates in the N-end rule pathway, a process linked to protein quality control and cell growth. Dysregulation of such recognition can affect the stability of oncoproteins and tumor suppressors. Studying GO:0071535 in cancer models may reveal vulnerabilities in N-degron-dependent degradation.
Muscle atrophy and MuRF1
MuRF1 B-box2 displays a novel self-association pattern within a RING-like fold, and MuRF1 is a well-known regulator of muscle atrophy signaling. RING-like domain binding by MuRF1 may influence its ability to form complexes and target proteins for degradation. Experimental models that perturb MuRF1 B-box2 interactions can help define its role in muscle wasting.
From RING-like zinc finger domain binding-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of a RING-like domain abolish partner binding? | CRISPR knockout of the RING-like domain-containing gene |
| Which residues mediate RING-like domain recognition? | Point-mutation knock-in of zinc-coordinating or interface residues |
| Can a tagged RING-like domain pull down novel partners? | Knock-in of an epitope tag at the endogenous locus |
| Does overexpression of a RING-like domain protein alter signaling? | Doxycycline-inducible overexpression cell lines |
| Is binding conserved across species? | Comparative structural and binding assays using orthologs |
| Can a viral RING-like domain be targeted? | Viral reverse genetics with zinc-binding domain mutations |
How to Study the RING-like zinc finger domain binding Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Solution NMR | Three-dimensional structure and dynamics of RING-like domains | MID1 B-box2 and MuRF1 B-box2 structural studies |
| X-ray crystallography | Atomic structure of RING-like domain complexes | Arterivirus helicase zinc-binding domain |
| Yeast two-hybrid | Binary protein-protein interaction | ZIN-Vif interaction mapping |
| Co-immunoprecipitation | Endogenous complex formation | Validation of RING-like domain binding in cells |
| GST pull-down | In vitro direct binding | Domain mapping of RING-like interfaces |
| Site-directed mutagenesis | Requirement of specific residues for binding | Zinc-coordinating residue analysis |
| CRISPR knockout | Loss-of-function phenotype | Testing RING-like domain gene function |
| CRISPR knock-in | Tagged or mutant endogenous protein | Interface mutation and localization studies |
Structural biology (NMR and crystallography)
Solution NMR and X-ray crystallography are primary methods for defining RING-like folds and their binding interfaces. The MID1 B-box2 structure was solved by NMR and revealed a conserved RING fold. MuRF1 B-box2 structural analysis identified a novel self-association pattern. These methods provide the atomic detail needed to interpret GO:0071535 binding events.
Binding assays (yeast two-hybrid, co-IP, pull-down)
Yeast two-hybrid, co-immunoprecipitation, and GST pull-down assays detect physical interactions between RING-like domains and their partners. The interaction between ZIN and HIV-1 Vif was demonstrated using such approaches. These assays can be combined with domain mapping to localize the binding interface.
Mutational analysis and zinc-binding studies
Site-directed mutagenesis of zinc-coordinating residues and interface residues tests the requirement for RING-like domain binding. The arterivirus helicase zinc-binding domain was functionally dissected by mutation. Similar strategies apply to UBR-box and B-box domains.
CRISPR-based perturbation and functional readouts
CRISPR knockout, point mutation, and knock-in models allow causal testing of RING-like domain binding in cells. Knockout of alpha-COP RING finger or UBR-box proteins can reveal trafficking or degradation defects. Combining CRISPR with transcriptomics or proteomics links binding events to cellular phenotypes.
How CRISPR Can Be Used to Study GO:0071535 RING-like zinc finger domain binding
Knockout
CRISPR knockout of genes encoding RING-like domain-containing proteins or their binding partners can abolish the interaction and reveal downstream phenotypes. For example, knocking out COPA or UBR-box proteins tests the role of RING-like domains in trafficking and N-degron recognition. Knockout models are also useful for validating whether a candidate binding event is required for a cellular process.
Point Mutation
Point mutations in zinc-coordinating or interface residues can selectively disrupt RING-like domain binding without deleting the entire protein. This approach is informed by structural studies of MID1 B-box2 and MuRF1 B-box2. CRISPR point-mutation models allow precise testing of GO:0071535 in an endogenous context.
Knock-in
Knock-in of epitope tags, fluorescent proteins, or disease-associated mutations enables visualization and functional analysis of RING-like domain proteins at endogenous levels. Tagged knock-in of alpha-COP or hDKIR can reveal localization and interaction dynamics. Knock-in of patient-derived mutations in MID1 or UBR-box genes can model disease mechanisms.
Overexpression
Overexpression of RING-like domain proteins or their binding partners can amplify interactions and uncover gain-of-function phenotypes. Overexpression of ZIN or HIV-1 Vif has been used to study their interaction. Inducible overexpression systems are valuable for testing whether increased RING-like domain binding drives signaling or disease phenotypes.
How EDITGENE Supports RING-like zinc finger domain binding Research
Researchers studying RING-like zinc finger domain binding-related genes often need to determine whether a candidate gene is causally involved in a specific interaction or phenotype. EDITGENE provides CRISPR-based cell models and screening services that enable precise perturbation of RING-like domain-encoding loci, from complete knockout to single-residue point mutations and tagged knock-ins. These tools help convert correlative binding data into mechanistic evidence and support target validation for antiviral, developmental, and cancer research.
Contact EDITGENE today to design your custom CRISPR model for RING-like zinc finger domain binding research.
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Frequently Asked Questions About RING-like zinc finger domain binding
What is GO:0071535 RING-like zinc finger domain binding?
GO:0071535 is a molecular function term describing the binding of a protein to a RING-like zinc finger domain, a zinc-coordinating fold related to the C3HC4 RING finger.
What genes are involved in RING-like zinc finger domain binding?
Genes include COPA, UBR1/UBR2, MID1, MID2, MuRF1 (TRIM63), ZIN, and viral factors such as HIV-1 Vif and arterivirus helicase.
What is the difference between a RING finger and a RING-like zinc finger domain?
A RING-like domain is structurally related to the canonical C3HC4 RING finger but may have variations in zinc-coordinating residues and fold topology, as seen in B-box and UBR-box domains.
How is RING-like zinc finger domain binding studied experimentally?
Common methods include NMR and crystallography, yeast two-hybrid, co-immunoprecipitation, GST pull-down, site-directed mutagenesis, and CRISPR-based perturbation.
Which diseases are linked to RING-like zinc finger domain binding?
Research has linked these interactions to developmental disorders involving MID1, viral pathogenesis through HIV-1 Vif and arterivirus helicases, muscle atrophy via MuRF1, and cancer-related protein quality control through UBR-box proteins.
What is the role of zinc in RING-like zinc finger domain binding?
Zinc coordination stabilizes the RING-like fold, and loss of zinc can disrupt the domain structure and its ability to bind partners.
Can CRISPR be used to study RING-like zinc finger domain binding?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models allow causal testing of RING-like domain function in cells.
What is the UBR-box and how does it relate to RING-like domains?
The UBR-box is a binuclear RING-like treble clef zinc finger that mediates substrate recognition in the N-end rule pathway.
Is RING-like zinc finger domain binding involved in viral infection?
Yes, the RING finger protein ZIN interacts with HIV-1 Vif, and arterivirus helicases contain a complex zinc-binding domain resembling a nonsense-mediated mRNA decay helicase.
How can EDITGENE help with RING-like zinc finger domain binding research?
EDITGENE provides CRISPR knockout, point-mutation, knock-in, overexpression cell models, library screening, and bioinformatics services to study RING-like domain interactions.
Conclusion
GO:0071535 RING-like zinc finger domain binding defines a structurally and functionally important molecular recognition event that connects zinc-coordinating folds to diverse cellular processes. From coatomer assembly and N-end rule degradation to viral pathogenesis and muscle atrophy signaling, RING-like domains serve as interaction hubs that can be systematically dissected with modern structural and CRISPR tools. Continued research using knockout, point-mutation, knock-in, and overexpression models will clarify how these binding events contribute to health and disease, and may reveal new therapeutic opportunities.
References
- 1. Kaur G et al.. 2015. A novel RING finger in the C-terminal domain of the coatomer protein α-COP.. Biol Direct 10:70 PMID: 26666296
- 2. Kaur G et al.. 2015. The UBR-box and its relationship to binuclear RING-like treble clef zinc fingers.. Biol Direct 10:36 PMID: 26185100
- 3. Massiah MA et al.. 2007. Solution structure of the MID1 B-box2 CHC(D/C)C(2)H(2) zinc-binding domain: insights into an evolutionarily conserved RING fold.. J Mol Biol 369(1):1-10 PMID: 17428496
- 4. Deng Z et al.. 2014. Structural basis for the regulatory function of a complex zinc-binding domain in a replicative arterivirus helicase resembling a nonsense-mediated mRNA decay helicase.. Nucleic Acids Res 42(5):3464-77 PMID: 24369429
- 5. Feng F et al.. 2004. Ring finger protein ZIN interacts with human immunodeficiency virus type 1 Vif.. J Virol 78(19):10574-81 PMID: 15367624
- 6. Collino S et al.. 2008. Identification and structural characterization of an unusual RING-like sequence within an extracellular biomineralization protein, AP7.. Biochemistry 47(12):3745-55 PMID: 18298090
- 7. Mai A et al.. 2004. hDKIR, a human homologue of the Drosophila kelch protein, involved in a ring-like structure.. Exp Cell Res 300(1):72-83 PMID: 15383316
- 8. Mrosek M et al.. 2008. Structural analysis of B-Box 2 from MuRF1: identification of a novel self-association pattern in a RING-like fold.. Biochemistry 47(40):10722-30 PMID: 18795805
