GO:0099077 histone-dependent DNA binding: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0099077 (histone-dependent DNA binding) describes DNA-binding activity that requires prior binding to a histone, coupling chromatin recognition to DNA interaction.
• Linker histones such as H1 shape nucleosome entry/exit DNA geometry and stabilize higher-order chromatin, providing the structural basis for histone-dependent DNA binding.
• Histone post-translational modifications, including acetylation and methylation, modulate histone-dependent DNA binding and transcriptional repression.
• Histone-dependent recruitment of non-histone proteins such as Tup1-Ssn6 and DNMT1 demonstrates the functional reach of this activity in gene silencing and DNA methylation.
• Altered expression of histone-modifier genes is associated with pathological and clinical outcomes in human breast cancer, linking this term to disease.
• CRISPR knockout, point-mutation, knock-in, and overexpression models enable causal dissection of histone-dependent DNA binding in chromatin and disease contexts.
Description
GO:0099077, histone-dependent DNA binding, is a molecular function defined as DNA-binding activity that is dependent on binding to a histone. In practical terms, this means that a protein or complex does not engage DNA in a sequence- or structure-specific manner on its own; instead, its DNA-binding capability is conferred or enabled by a prior interaction with a histone protein or histone-containing nucleosome. This term captures a fundamental layer of chromatin biology in which histone proteins act as adaptors or cofactors that license DNA engagement. The concept emerged from biochemical studies showing that linker histones such as H1 alter the path and dynamics of nucleosomal DNA, thereby creating histone-dependent DNA conformations that influence protein access and transcription. Histone acetylation further modulates nucleosome mobility and positioning, and linker histone-dependent transcriptional repression depends on the acetylation state of the underlying histones. These observations established that DNA binding in chromatin is frequently conditional on histone identity, modification state, and nucleosome architecture. For researchers, GO:0099077 provides a precise annotation for activities that would otherwise be misclassified as generic DNA binding. It is relevant to gene silencing complexes such as Tup1-Ssn6, which associate with repressed genes in a histone-dependent manner in vivo, and to epigenetic maintenance factors such as DNMT1, whose recruitment to DNA is attenuated by ubiquitinated histone-dependent mechanisms and negatively controlled by USP7. The term also intersects with developmental signaling, as the histone demethylase UTX counteracts glucocorticoid deregulation of osteogenesis through both histone-dependent and histone-independent pathways. Because histone-dependent DNA binding sits at the interface of chromatin structure, transcription, and DNA methylation, it is a high-value target for mechanistic and translational studies.
histone-dependent DNA binding At A Glance
| GO ID | GO:0099077 |
|---|---|
| GO term | histone-dependent DNA binding |
| Ontology | molecular_function |
| Synonym | none |
| Definition | DNA-binding activity that is dependent on binding to a histone |
| Major function | Enables DNA engagement by proteins or complexes only after they bind a histone or histone-containing nucleosome |
| Example complexes | Linker histone H1-nucleosome assemblies, Tup1-Ssn6 repression complexes, DNMT1 recruitment machinery |
| Modification dependence | Histone acetylation and ubiquitination modulate the activity |
| Disease relevance | Histone-modifier expression profiles associate with breast cancer outcomes |
What Is GO:0099077?
In our own words, GO:0099077 describes a DNA-binding activity that is not intrinsic to the DNA-binding protein alone but is contingent on binding to a histone. The histone may be a linker histone, a core histone within a nucleosome, or a modified histone, and the resulting histone-protein-DNA assembly is what executes the DNA-binding function. This definition distinguishes histone-dependent DNA binding from sequence-specific transcription factor binding and from histone-independent DNA interactions.
Why Is histone-dependent DNA binding Important in Cell Biology?
Histone-dependent DNA binding is important because it explains how chromatin context dictates whether a protein can access DNA, thereby controlling transcription, silencing, and epigenetic inheritance. Linker histones organize nucleosome entry/exit DNA and stabilize repressed chromatin, and their acetylation-dependent effects on nucleosome mobility directly influence transcriptional repression. Non-histone proteins such as Tup1-Ssn6 require histone-dependent association to occupy repressed genes in vivo, showing that this activity is a prerequisite for gene silencing. DNMT1 recruitment to DNA is attenuated by ubiquitinated histone-dependent mechanisms and is negatively controlled by USP7, linking histone-dependent DNA binding to global DNA methylation. UTX counteracts glucocorticoid deregulation of osteogenesis through histone-dependent and histone-independent pathways, connecting this term to developmental signaling. Finally, histone-modifier gene expression profiles are associated with pathological and clinical outcomes in breast cancer, underscoring the translational importance of this activity.
• Defines a chromatin-contextual DNA-binding mechanism that is distinct from intrinsic sequence-specific DNA binding.
• Provides the structural basis for linker histone-dependent nucleosome organization and transcriptional repression.
• Enables histone-dependent recruitment of silencing complexes such as Tup1-Ssn6 to repressed genes in vivo.
• Links histone ubiquitination to DNMT1 recruitment and global DNA methylation control.
• Connects histone demethylation by UTX to glucocorticoid-regulated osteogenesis.
• Explains how histone acetylation alters nucleosome mobility and positioning.
• Supports annotation of non-histone chromosomal proteins that require histones for nucleosomal localization.
• Associates histone-modifier gene expression with breast cancer pathology and clinical outcome.
• Offers a mechanistic framework for studying epigenetic drugs that target histone-dependent DNA interactions.
• Guides CRISPR-based causal studies of chromatin factors in disease models.
Molecular Mechanism of histone-dependent DNA binding
Histone binding as a prerequisite for DNA engagement
In simple terms: A protein must first grab onto a histone before it can hold onto DNA.
The defining feature of GO:0099077 is that DNA binding is conditional on histone binding. Linker histones such as H1 bind the nucleosome and organize the entry/exit DNA, creating a histone-dependent DNA structure that is distinct from naked DNA. This histone-first mechanism means that the DNA-binding activity cannot be reconstituted with DNA alone; it requires the histone or histone-containing nucleosome as a cofactor.
Linker histone-dependent DNA structure and dynamics
In simple terms: Linker histones bend and position the DNA that enters and exits the nucleosome.
Biophysical studies of linear mononucleosomes demonstrated that linker histones impose a specific DNA structure and alter the organization and dynamics of nucleosome entry/exit DNAs. These histone-dependent conformational changes influence how other proteins access nucleosomal DNA and provide the structural basis for histone-dependent DNA binding.
Histone modification as a regulatory switch
In simple terms: Chemical marks on histones can turn histone-dependent DNA binding on or off.
Histone acetylation influences transcription, nucleosome mobility and positioning, and linker histone-dependent transcriptional repression. Histone ubiquitination attenuates DNMT1 recruitment to DNA, and USP7 negatively controls global DNA methylation by reversing this ubiquitinated histone-dependent recruitment. These findings show that the modification state of histones is a key determinant of whether histone-dependent DNA binding occurs.
Histone-dependent recruitment of non-histone proteins
In simple terms: Some non-histone proteins can only find their target genes when histones are present.
The Tup1-Ssn6 complex associates with repressed genes in vivo in a histone-dependent manner, demonstrating that histone-dependent DNA binding is used by transcriptional corepressors. Similarly, a nonhistone chromosomal protein, the H2A-specific protease, requires histone-dependent reconstitution for nucleosomal localization. These examples illustrate that histone-dependent DNA binding is a general mechanism for targeting proteins to chromatin.
Cofactors and pathway integration
In simple terms: Other enzymes and signaling pathways tune histone-dependent DNA binding.
UTX, a histone demethylase, counteracts glucocorticoid deregulation of osteogenesis by modulating histone-dependent and histone-independent pathways, indicating that histone-modifying enzymes can integrate with hormone signaling to control this activity. USP7 acts as a negative regulator of global DNA methylation by attenuating ubiquitinated histone-dependent DNMT1 recruitment. Together, these cofactors define a regulatory network around GO:0099077.
Key Genes Involved in GO:0099077 histone-dependent DNA binding
The following genes and proteins are experimentally linked to histone-dependent DNA binding or its regulation, based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| H1 linker histones | Bind nucleosome entry/exit DNA and impose histone-dependent DNA structure | Core structural effectors of GO:0099077; studied by nucleosome reconstitution and biophysics |
| H2A-specific protease | Nonhistone chromosomal protein requiring histone-dependent reconstitution for nucleosomal localization | Model for histone-dependent targeting of non-histone proteins |
| TUP1 | Component of Tup1-Ssn6 repressor complex that associates with repressed genes in a histone-dependent manner | Genetic model for histone-dependent gene silencing in vivo |
| SSN6 | Partner of Tup1 in histone-dependent repression complex | Used to dissect histone-dependent recruitment to repressed promoters |
| DNMT1 | DNA methyltransferase recruited to DNA via ubiquitinated histone-dependent mechanisms | Links histone-dependent DNA binding to global DNA methylation |
| USP7 | Deubiquitinase that negatively controls global DNA methylation by attenuating ubiquitinated histone-dependent DNMT1 recruitment | Regulator of histone-dependent DNA binding and methylation |
| UTX (KDM6A) | Histone demethylase that modulates histone-dependent and histone-independent pathways in osteogenesis | Connects histone-dependent mechanisms to glucocorticoid signaling and differentiation |
| Histone acetyltransferases | Deposit acetylation marks that influence nucleosome mobility and linker histone-dependent repression | Enzymes that set the modification state required for histone-dependent DNA binding |
| Histone deacetylases | Remove acetylation and thereby modulate histone-dependent transcriptional repression | Pharmacological and genetic handles on histone-dependent DNA binding |
| Histone methyltransferases | Write methylation marks that can influence histone-dependent pathways | Potential upstream regulators of GO:0099077 |
| Histone demethylases | Erase methylation marks; UTX is a key example | Enzymes that reverse histone marks and modulate histone-dependent DNA binding |
| Histone ubiquitin ligases | Add ubiquitin marks that enable DNMT1 recruitment | Upstream writers of the ubiquitinated histone signal |
| Histone deubiquitinases | Remove ubiquitin marks; USP7 is a key example | Negative regulators of histone-dependent DNMT1 recruitment |
| Core histones H2A/H2B/H3/H4 | Form the nucleosome that provides the histone surface for DNA binding | Fundamental components of histone-dependent DNA binding assays |
| Chromatin remodeling ATPases | Alter nucleosome positioning and access, indirectly influencing histone-dependent DNA binding | Candidate modifiers of histone-dependent DNA interactions |
| Histone chaperones | Assist histone deposition and nucleosome assembly, enabling histone-dependent DNA binding | Upstream factors in reconstitution experiments |
| Histone-modifier gene panel | Expression profiles associated with breast cancer pathology and outcome | Biomarker and target discovery for histone-dependent mechanisms |
How Is histone-dependent DNA binding Regulated?
Histone-dependent DNA binding is regulated at multiple levels. Histone acetylation alters nucleosome mobility and positioning and modulates linker histone-dependent transcriptional repression, effectively gating whether histone-dependent DNA binding leads to repression. Histone ubiquitination promotes DNMT1 recruitment to DNA, while the deubiquitinase USP7 negatively controls global DNA methylation by attenuating this ubiquitinated histone-dependent recruitment. Histone demethylation by UTX counteracts glucocorticoid deregulation of osteogenesis through histone-dependent and histone-independent pathways, showing that hormonal signaling can intersect with this activity. In addition, the expression of histone-modifier genes is associated with pathological and clinical outcomes in breast cancer, suggesting that transcriptional regulation of these enzymes shapes histone-dependent DNA binding in disease.
histone-dependent DNA binding and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| Histone-modifier gene panel | Breast cancer pathology and clinical outcome | Knockout or overexpression of individual modifiers in breast cancer cell lines followed by expression profiling |
| DNMT1 | Global DNA methylation and epigenetic maintenance | Point-mutation of ubiquitin-binding or histone-interacting residues; methylation profiling |
| USP7 | Negative control of DNA methylation | Knockout and rescue with catalytically dead USP7; DNMT1 recruitment assays |
| UTX (KDM6A) | Glucocorticoid deregulation of osteogenesis | Knockout in osteogenic differentiation models with glucocorticoid treatment |
| TUP1/SSN6 | Histone-dependent gene repression | Knockout of TUP1 or SSN6 in yeast and chromatin immunoprecipitation at repressed genes |
Histone-dependent DNA binding in cancer
Histone-modifier gene expression profiles are associated with pathological and clinical outcomes in human breast cancer, indicating that deregulated histone-dependent mechanisms contribute to tumor biology. Because histone-dependent DNA binding controls chromatin accessibility and gene silencing, alterations in the enzymes that set histone marks, such as acetyltransferases and deacetylases, can reshape transcriptional programs in cancer. DNMT1 recruitment via ubiquitinated histone-dependent mechanisms further links this activity to DNA methylation patterns that are frequently disrupted in malignancy.
Epigenetic regulation and DNA methylation disorders
USP7 negatively controls global DNA methylation by attenuating ubiquitinated histone-dependent DNMT1 recruitment, placing histone-dependent DNA binding at the center of epigenetic maintenance. Disruption of this axis could alter DNA methylation fidelity and contribute to diseases characterized by aberrant methylation. The dependency on histone ubiquitination provides a potential therapeutic node for modulating methylation without directly inhibiting DNMT1.
Developmental and metabolic signaling
UTX counteracts glucocorticoid deregulation of osteogenesis by modulating histone-dependent and histone-independent pathways, linking histone-dependent DNA binding to bone development and steroid signaling. This suggests that conditions involving glucocorticoid excess or altered osteogenesis may involve histone-dependent mechanisms. The dual histone-dependent and histone-independent actions of UTX highlight the complexity of targeting this activity in developmental disease.
From histone-dependent DNA binding-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is a candidate gene required for histone-dependent DNA binding? | CRISPR knockout cell line followed by nucleosome binding assays |
| Does a specific histone residue mediate DNA engagement? | Point-mutation knock-in of histone or histone-interacting residues |
| Can a histone-dependent DNA binding event be visualized at target loci? | Tagged knock-in of the DNA-binding protein with a fluorescent or epitope tag |
| Does overexpression of a histone modifier alter repression? | Overexpression cell model with transcriptional readouts |
| Which histone marks are required for DNMT1 recruitment? | Knockout of ubiquitin ligases or deubiquitinases combined with methylation profiling |
| Does loss of a histone demethylase affect differentiation? | Knockout of UTX in osteogenic differentiation models |
How to Study the histone-dependent DNA binding Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Nucleosome reconstitution with linker histones | Histone-dependent DNA structure and dynamics | Defining the structural basis of GO:0099077 |
| Chromatin immunoprecipitation | In vivo occupancy of proteins at repressed genes | Testing histone-dependent recruitment of repressors |
| DNA methylation profiling | Global DNA methylation levels | Assessing DNMT1 recruitment via ubiquitinated histones |
| Histone acetylation assays | Acetylation-dependent nucleosome mobility and repression | Linking histone marks to histone-dependent DNA binding |
| Histone demethylation assays | UTX activity and pathway effects | Dissecting histone-dependent vs histone-independent functions |
| Nonhistone chromosomal protein reconstitution | Histone-dependent nucleosomal localization | Studying H2A-specific protease targeting |
| Transcriptomic profiling | Histone-modifier gene expression signatures | Correlating histone-dependent mechanisms with clinical outcome |
| CRISPR knockout followed by binding assays | Causal requirement of a gene for histone-dependent DNA binding | Functional validation of candidate regulators |
Nucleosome reconstitution and biophysical assays
Linker histone-dependent DNA structure and nucleosome entry/exit DNA organization were defined using linear mononucleosomes and biophysical measurements. These assays can be adapted to test whether a candidate protein binds DNA only in the presence of histones, directly reporting GO:0099077 activity.
Chromatin immunoprecipitation and in vivo occupancy
Histone-dependent association of Tup1-Ssn6 with repressed genes was demonstrated in vivo using chromatin immunoprecipitation. Similar approaches can map histone-dependent DNA binding across the genome and distinguish it from histone-independent binding.
DNA methylation and epigenetic profiling
USP7 regulation of global DNA methylation via ubiquitinated histone-dependent DNMT1 recruitment was uncovered using methylation profiling and recruitment assays. These methods connect histone-dependent DNA binding to downstream epigenetic states.
Expression profiling of histone modifiers
Histone-modifier gene expression profiles associated with breast cancer outcomes were identified by transcriptomic profiling of patient samples. Such profiling can nominate histone-dependent DNA binding components as biomarkers or therapeutic targets.
How CRISPR Can Be Used to Study GO:0099077 histone-dependent DNA binding
Knockout
CRISPR knockout of candidate genes such as TUP1, SSN6, USP7, or UTX enables loss-of-function tests of histone-dependent DNA binding and its downstream effects on repression, methylation, or differentiation. Knockout cell lines can be subjected to nucleosome binding assays, chromatin immunoprecipitation, and methylation profiling to determine whether the gene is required for the activity.
Point Mutation
Point-mutation models can be used to dissect which residues of a histone or histone-interacting protein are required for histone-dependent DNA binding. For example, mutating ubiquitin acceptor sites on histones can test their role in DNMT1 recruitment, and mutating acetylation sites can test effects on linker histone-dependent repression.
Knock-in
Tagged knock-in of DNA-binding proteins or histones allows visualization and purification of histone-dependent DNA binding complexes. This approach is useful for mapping nucleosomal localization of nonhistone proteins such as the H2A-specific protease and for tracking repressor complexes at endogenous loci.
Overexpression
Overexpression models can test whether increasing the level of a histone modifier or DNA-binding protein enhances or disrupts histone-dependent DNA binding. Overexpression of histone acetyltransferases or deacetylases can shift the acetylation balance that controls nucleosome mobility and linker histone-dependent repression, while overexpression of UTX can probe histone-dependent and histone-independent effects on osteogenesis.
How EDITGENE Supports histone-dependent DNA binding Research
Researchers studying histone-dependent DNA binding-related genes often need to determine whether a candidate gene is causally involved in the activity or is merely correlated with it. CRISPR-based models provide the cleanest way to establish causality, and EDITGENE offers a full suite of services to generate and characterize such models.
Contact EDITGENE today to design your custom CRISPR model for histone-dependent DNA binding research.
Frequently Asked Questions About histone-dependent DNA binding
What is histone-dependent DNA binding?
Histone-dependent DNA binding (GO:0099077) is DNA-binding activity that is dependent on binding to a histone, meaning the protein or complex must first interact with a histone or nucleosome before it can engage DNA.
What genes are involved in histone-dependent DNA binding?
Genes and proteins linked to this activity include linker histones H1, the H2A-specific protease, TUP1, SSN6, DNMT1, USP7, and UTX, among others.
How is histone-dependent DNA binding regulated?
It is regulated by histone modifications such as acetylation and ubiquitination, and by enzymes including histone acetyltransferases, deacetylases, ubiquitin ligases, and deubiquitinases such as USP7.
Why is histone-dependent DNA binding important in cancer?
Histone-modifier gene expression profiles are associated with pathological and clinical outcomes in breast cancer, and histone-dependent mechanisms influence chromatin accessibility and DNA methylation.
What is the role of linker histones in histone-dependent DNA binding?
Linker histones such as H1 organize nucleosome entry/exit DNA and impose a histone-dependent DNA structure that shapes protein access and transcriptional repression.
How does USP7 affect histone-dependent DNA binding?
USP7 negatively controls global DNA methylation by attenuating ubiquitinated histone-dependent DNMT1 recruitment.
What experimental methods study histone-dependent DNA binding?
Nucleosome reconstitution, chromatin immunoprecipitation, DNA methylation profiling, histone modification assays, and transcriptomic profiling are commonly used.
Can CRISPR be used to study histone-dependent DNA binding?
Yes, CRISPR knockout, point-mutation, knock-in, and overexpression models can test causal roles of genes and residues in histone-dependent DNA binding.
What diseases are linked to histone-dependent DNA binding?
Breast cancer, epigenetic methylation disorders, and glucocorticoid-related osteogenesis defects have been linked to components of this activity.
What is the GO ID for histone-dependent DNA binding?
The Gene Ontology ID is GO:0099077, with ontology aspect molecular_function and no synonyms.
Conclusion
GO:0099077, histone-dependent DNA binding, defines a chromatin-contextual DNA-binding activity in which histones serve as essential cofactors for DNA engagement. The verified literature shows that linker histones shape nucleosomal DNA structure, that histone acetylation and ubiquitination regulate the activity, and that non-histone proteins such as Tup1-Ssn6 and DNMT1 rely on histones for recruitment. These mechanisms connect histone-dependent DNA binding to transcriptional repression, DNA methylation, and developmental signaling. The association of histone-modifier expression with breast cancer outcomes highlights the translational relevance of this term. CRISPR-based knockout, point-mutation, knock-in, and overexpression models, combined with nucleosome and methylation assays, provide a rigorous path to dissect and target histone-dependent DNA binding in disease.
References
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- 4. Davie JK et al.. 2002. Histone-dependent association of Tup1-Ssn6 with repressed genes in vivo.. Mol Cell Biol 22(3):693-703 PMID: 11784848
- 5. Wang FS et al.. 2017. Histone demethylase UTX counteracts glucocorticoid deregulation of osteogenesis by modulating histone-dependent and -independent pathways.. J Mol Med (Berl) 95(5):499-512 PMID: 28130569
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