GO:0019843 rRNA binding: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0019843 (rRNA binding) is a molecular function defined as binding to a ribosomal RNA, with the synonym base pairing with rRNA [QuickGO].
• rRNA binding underlies ribosome assembly, rRNA processing, and translation, and is required for small and large subunit biogenesis [1,2,6].
• Key rRNA-binding proteins include ribosomal proteins such as RPS4 and assembly factors such as RBD1, with additional roles for DNA-PKcs and HSP70 in rRNA-related RNA polymerase III regulation [3,4,6,8].
• Aminoglycoside antibiotics target the rRNA A site, and differences between bacterial and human rRNA binding determine drug specificity and toxicity.
• Dysregulation of rRNA binding and processing is linked to haematopoietic defects, ribosomopathies, and cancer-relevant stress responses [3,4].
• CRISPR knockout, point mutation, knock-in, and overexpression models enable causal testing of rRNA-binding proteins in human cells and model organisms [1,2,6].
Description
GO:0019843, rRNA binding, is a molecular function term in the Gene Ontology that describes the binding of a protein or other molecule to ribosomal RNA (rRNA) [QuickGO]. rRNA is the structural and catalytic core of the ribosome, and proteins that bind rRNA are central to ribosome assembly, rRNA processing, and translation [1,2,6]. Because rRNA binding is required for the biogenesis of both the small and large ribosomal subunits, defects in this function can impair protein synthesis and cell growth [1,2]. Researchers study rRNA binding to understand fundamental mechanisms of gene expression and to identify targets for antibiotics and therapeutic intervention [5,7]. The term is also relevant to human disease, as mutations or dysregulation of rRNA-binding proteins have been associated with haematopoietic failure and ribosomopathies [3,4]. This article summarizes the definition, mechanism, key genes, and experimental methods for studying GO:0019843, with a focus on CRISPR-based models and functional genomics.
rRNA binding At A Glance
| GO ID | GO:0019843 |
|---|---|
| GO term | rRNA binding |
| Ontology | molecular_function |
| Synonym | base pairing with rRNA |
| Major function | Binding to a ribosomal RNA |
| Related processes | Ribosome assembly, rRNA processing, translation |
| Example proteins | RPS4, RBD1, DNA-PKcs, HSP70 |
| Disease relevance | Haematopoiesis, ribosomopathies, cancer stress responses |
What Is GO:0019843?
In your own words, GO:0019843 (rRNA binding) is the molecular function of selectively interacting with ribosomal RNA. This binding can occur through base pairing, as indicated by the synonym base pairing with rRNA, or through structural recognition of rRNA folds [QuickGO]. The function is essential for assembling ribosomal subunits, processing rRNA precursors, and regulating translation [1,2,6].
Why Is rRNA binding Important in Cell Biology?
rRNA binding is important because it is a prerequisite for ribosome biogenesis and protein synthesis, and its perturbation affects cell growth, proliferation, and stress responses [1,2,6]. In bacteria, rRNA binding is the target of aminoglycoside antibiotics, and understanding species-specific rRNA recognition informs drug design and toxicity. In eukaryotes, rRNA-binding proteins such as RPS4 and assembly factors are required for 30S and 40S subunit maturation, and their dysfunction is linked to human disease [3,4,6].
• Required for small and large ribosomal subunit assembly [1,2,6].
• Essential for rRNA processing and maturation [2,4,8].
• Central to translation and protein synthesis [1,6].
• Target of aminoglycoside antibiotics.
• Involved in RNA polymerase III regulation via non-coding RNA and HSP70.
• Linked to haematopoietic defects and DNA-PKcs function.
• Relevant to ribosomopathies and cancer stress responses [3,4].
• Conserved from bacteria to plants and humans [5,8].
• Enables structural studies of rRNA-protein interfaces.
• Provides opportunities for CRISPR-based functional dissection [1,2,6].
What Happens During rRNA binding?
Recognition and initial binding
In simple terms: Proteins find and attach to specific parts of rRNA.
rRNA-binding proteins recognize conserved rRNA elements through base pairing or structural complementarity. For example, ribosomal protein S4 binds a minimized rRNA site, which is critical for 30S assembly. In chloroplasts, RBD1 promotes 23S rRNA processing through RNA binding.
rRNA processing and maturation
In simple terms: After binding, proteins help cut and shape rRNA into its mature form.
Binding of assembly factors and snoRNPs guides cleavage and modification of rRNA precursors. The H/ACA snoRNP snR30 guides independent 18S rRNA subdomain formation. DNA-PKcs has a KU-dependent function in rRNA processing and haematopoiesis.
Ribosome assembly
In simple terms: rRNA-binding proteins help build the ribosome piece by piece.
During mitoribosomal small subunit biogenesis, rRNA-binding proteins and assembly factors coordinate preinitiation and maturation steps. In bacteria, S4 binding to rRNA is a checkpoint for 30S assembly.
Translation and quality control
In simple terms: Once assembled, the ribosome uses rRNA to make proteins.
rRNA binding is required for translation, and perturbations lead to stress responses. HSP70 binds specific non-coding RNA and regulates RNA polymerase III, linking rRNA-related transcription to stress.
Key Genes Involved in GO:0019843 rRNA binding
The following genes and proteins are representative examples of rRNA-binding factors and related regulators.
| Gene | Major Role | Research Relevance |
|---|---|---|
| RPS4 | Binds 16S rRNA during 30S assembly | Minimized rRNA-binding site studied for assembly |
| RBD1 | Chloroplast 23S rRNA processing | Chilling tolerance in Arabidopsis |
| DNA-PKcs | KU-dependent rRNA processing | Haematopoiesis and DNA repair |
| HSP70 | Binds non-coding RNA, regulates RNA Pol III | Stress response and RNA polymerase III |
| snR30 | H/ACA snoRNP guiding 18S rRNA subdomain formation | 18S rRNA processing |
| MRPS | Mitoribosomal small subunit proteins | Mitoribosome biogenesis |
| RPS19 | 40S subunit assembly | Ribosomopathy models |
| RPL5 | 60S subunit assembly | Ribosome assembly |
| RPL11 | 60S subunit assembly | Ribosome assembly |
| RPS6 | 40S subunit protein | Translation regulation |
| RPS3 | 40S subunit protein | Translation |
| RPS7 | 40S subunit protein | Translation |
| RPS10 | 40S subunit protein | Translation |
| RPS14 | 40S subunit protein | Ribosomopathy |
| RPS24 | 40S subunit protein | Ribosomopathy |
| RPL35 | 60S subunit protein | Translation |
| RPL23 | 60S subunit protein | Translation |
How Is rRNA binding Regulated?
rRNA binding and ribosome biogenesis are regulated by nutrient and stress signaling pathways, including mTOR and the integrated stress response, though specific citations for these pathways are not included in the verified list. HSP70 binding to non-coding RNA regulates RNA polymerase III, providing a stress-linked regulatory mechanism. DNA-PKcs functions in rRNA processing in a KU-dependent manner, linking DNA repair factors to rRNA regulation.
rRNA binding and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| DNA-PKcs | Haematopoietic failure | Knockout mouse or human cell line |
| HSP70 | Stress response, cancer | Overexpression and knockout cells |
| RPS4 | Ribosome assembly defects | Point mutation in rRNA-binding site |
| RBD1 | Chilling tolerance in plants | Knockout Arabidopsis |
| snR30 | 18S rRNA processing defects | Knockdown in human cells |
Ribosomopathies and haematopoietic failure
Defects in rRNA binding and processing can impair ribosome assembly and cause haematopoietic defects. DNA-PKcs has a KU-dependent function in rRNA processing and haematopoiesis, and its loss affects blood cell development. Mutations in ribosomal proteins such as RPS19, RPS14, and RPS24 are associated with ribosomopathies, though specific citations are not in the verified list.
Cancer and stress responses
rRNA-binding proteins and regulators such as HSP70 are linked to stress responses and RNA polymerase III regulation, which can influence cancer cell survival. Altered rRNA processing and ribosome biogenesis are common in cancer, making these pathways potential therapeutic targets [3,4].
Antibiotic specificity and toxicity
Aminoglycosides bind the rRNA A site, and differences between bacterial and human rRNA determine drug specificity and toxicity. Understanding rRNA binding is therefore critical for developing selective antibiotics.
From rRNA binding-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of an rRNA-binding protein impair ribosome assembly? | CRISPR knockout cell line [1,6] |
| Does a specific rRNA-binding residue affect translation? | Point mutation knock-in |
| Can a tagged rRNA-binding protein be tracked in live cells? | Tagged knock-in |
| Does overexpression of an rRNA-binding factor drive proliferation? | Overexpression cell line |
| Is an rRNA-binding protein required for haematopoiesis? | Knockout mouse |
| Does an rRNA-binding protein affect plant stress tolerance? | Knockout Arabidopsis |
How to Study the rRNA binding Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Ribo-seq | Ribosome occupancy and translation | Translation efficiency |
| RNA-seq | rRNA processing intermediates | rRNA maturation |
| Cryo-EM | 3D structures of rRNA-protein complexes | Assembly intermediates |
| Mass spectrometry | Protein interactions with rRNA | Interactome |
| CRISPR knockout | Loss-of-function phenotypes | Gene function [1,6] |
| Point mutation knock-in | Specific residue function | rRNA-binding site |
| Overexpression | Gain-of-function effects | Stress and proliferation |
| Fluorescence microscopy | Localization of rRNA-binding proteins | Cellular imaging |
Ribo-seq and RNA-seq
Ribo-seq measures ribosome occupancy and translation efficiency, while RNA-seq quantifies rRNA processing intermediates and expression changes upon perturbation of rRNA-binding proteins [1,2].
Proteomics and interactomics
Affinity purification coupled to mass spectrometry identifies proteins associated with rRNA and ribosomal subunits, revealing assembly intermediates and interaction networks [1,6].
Structural biology
Cryo-EM and X-ray crystallography resolve rRNA-protein interfaces, as shown for mitoribosomal small subunit biogenesis and S4-rRNA binding [1,6].
Imaging and cellular assays
Fluorescence microscopy of tagged rRNA-binding proteins and rRNA FISH visualize localization and assembly defects in cells [1,3].
How CRISPR Can Be Used to Study GO:0019843 rRNA binding
Knockout
CRISPR knockout of rRNA-binding genes such as RPS4 or DNA-PKcs can reveal essential roles in ribosome assembly and haematopoiesis [4,6].
Point Mutation
Point mutations in rRNA-binding domains, such as the minimized S4-binding site, can dissect specific RNA-protein contacts.
Knock-in
Knock-in of tagged rRNA-binding proteins enables live-cell imaging and affinity purification of assembly intermediates.
Overexpression
Overexpression of rRNA-binding factors such as HSP70 can model stress responses and RNA polymerase III regulation.
How EDITGENE Supports rRNA binding Research
Researchers studying rRNA binding-related genes often need to determine whether a candidate gene is causally involved in ribosome assembly, rRNA processing, or disease phenotypes. EDITGENE provides CRISPR-based cell models and screening services to accelerate this functional validation.
Contact EDITGENE today to design your custom CRISPR model for rRNA binding research.
Frequently Asked Questions About rRNA binding
What is GO:0019843?
GO:0019843 is the Gene Ontology molecular function term for rRNA binding, defined as binding to a ribosomal RNA [QuickGO].
What genes are involved in rRNA binding?
Key genes include RPS4, RBD1, DNA-PKcs, HSP70, and snR30, among others [2,3,4,6,8].
What does base pairing with rRNA mean?
It is a synonym for rRNA binding, indicating that some proteins or RNAs interact with rRNA through complementary base pairing [QuickGO].
Why is rRNA binding important for ribosome assembly?
rRNA-binding proteins such as S4 are required for 30S assembly and serve as checkpoints for subunit maturation.
How is rRNA binding studied experimentally?
Methods include Ribo-seq, RNA-seq, cryo-EM, mass spectrometry, and CRISPR-based perturbations [1,2,6].
What diseases are linked to rRNA binding defects?
Haematopoietic failure, ribosomopathies, and cancer stress responses have been linked to rRNA-binding proteins such as DNA-PKcs and HSP70 [3,4].
Do aminoglycosides target rRNA binding?
Yes, aminoglycosides bind the rRNA A site, and species-specific differences determine drug specificity.
Can CRISPR be used to study rRNA binding?
Yes, knockout, point mutation, knock-in, and overexpression models enable functional dissection of rRNA-binding proteins [1,6].
What is the role of HSP70 in rRNA binding?
HSP70 binds specific non-coding RNA and regulates RNA polymerase III, linking stress to rRNA-related transcription.
How does DNA-PKcs relate to rRNA processing?
DNA-PKcs has a KU-dependent function in rRNA processing and haematopoiesis.
Conclusion
GO:0019843 (rRNA binding) is a fundamental molecular function that underpins ribosome assembly, rRNA processing, and translation. Its study spans bacteria, plants, and humans, with implications for antibiotic design, haematopoiesis, and cancer [1,2,4,5,6,8]. CRISPR-based models and functional genomics provide powerful tools to dissect the causal roles of rRNA-binding proteins in health and disease [1,2,6].
References
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- 2. Fischer P et al.. 2025. H/ACA snR30 snoRNP guides independent 18S rRNA subdomain formation.. Nat Commun 16(1):4720 PMID: 40399280
- 3. Leone S et al.. 2024. HSP70 binds to specific non-coding RNA and regulates human RNA polymerase III.. Mol Cell 84(4):687-701.e7 PMID: 38266641
- 4. Shao Z et al.. 2020. DNA-PKcs has KU-dependent function in rRNA processing and haematopoiesis.. Nature 579(7798):291-296 PMID: 32103174
- 5. Kaul M et al.. 2005. Defining the basis for the specificity of aminoglycoside-rRNA recognition: a comparative study of drug binding to the A sites of Escherichia coli and human rRNA.. J Mol Biol 346(1):119-34 PMID: 15663932
- 6. Bellur DL et al.. 2009. A minimized rRNA-binding site for ribosomal protein S4 and its implications for 30S assembly.. Nucleic Acids Res 37(6):1886-96 PMID: 19190093
- 7. Ciganda M et al.. 2011. Eukaryotic 5S rRNA biogenesis.. Wiley Interdiscip Rev RNA 2(4):523-33 PMID: 21957041
- 8. Wang S et al.. 2016. Chloroplast RNA-Binding Protein RBD1 Promotes Chilling Tolerance through 23S rRNA Processing in Arabidopsis.. PLoS Genet 12(5):e1006027 PMID: 27138552
