GO:0140984 histone H4K12 methyltransferase activity: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0140984 (histone H4K12 methyltransferase activity) is a molecular_function term describing the catalysis of methyl group transfer from S-adenosyl-L-methionine to histone H4 lysine 12, producing S-adenosyl-L-homocysteine and H4K12me.
• H4K12 methylation is a post-translational modification that participates in chromatin-based processes including meiotic chromosome organization and heterochromatin compaction.
• The modification is dynamically regulated during early embryonic development and somatic cell nuclear reprogramming, as shown in cloned mouse embryos and pig cloning studies.
• H4K12 methylation can be influenced by oncogenic transcription factors such as Myc, which alter histone modification landscapes on target chromatin.
• Pathogen effectors can modulate host histone modifications, including H4K12 methylation, revealing crosstalk between host and pathogen epigenomes.
• Studying GO:0140984 requires integrating enzyme assays, chromatin immunoprecipitation, and CRISPR-based perturbation of candidate methyltransferases and demethylases.
Description
Histone H4 lysine 12 (H4K12) methylation is a covalent chromatin modification catalyzed by enzymes annotated with the Gene Ontology molecular_function term GO:0140984, histone H4K12 methyltransferase activity. This activity transfers a methyl group from the cofactor S-adenosyl-L-methionine (SAM) to the epsilon-amino group of lysine 12 on histone H4, generating S-adenosyl-L-homocysteine (SAH) and methylated H4K12. The modification is part of the broader histone code that regulates chromatin structure and gene expression, and it has been detected in diverse biological contexts including meiosis, early embryogenesis, and host-pathogen interactions. For researchers, GO:0140984 provides a precise functional annotation to distinguish H4K12-specific methyltransferase activity from other histone lysine methyltransferase activities. The term is particularly relevant because H4K12 methylation participates in spatiotemporal arrangements of histone H3 and H4 post-translational modifications required for meiotic prophase I chromosome organization. It is also dynamically reprogrammed during the first cell cycle of cloned embryos, where abnormal histone acetylation and methylation patterns can reduce developmental efficiency. Understanding the enzymes, cofactors, and regulatory inputs that control H4K12 methylation is essential for dissecting chromatin-dependent processes in development, disease, and infection. This article integrates the QuickGO definition with verified PubMed literature to outline the mechanism, key genes, disease links, and experimental models for studying GO:0140984.
histone H4K12 methyltransferase activity At A Glance
| GO ID | GO:0140984 |
|---|---|
| GO term | histone H4K12 methyltransferase activity |
| Ontology | molecular_function |
| Synonym | histone H4K12 methylase activity; histone H4K12 methylation; histone-H4K12 methyltransferase activity; histone H4 lysine 12-specific methyltransferase activity; histone lysine N-methyltransferase activity (H4-K12 specific); histone methylase activity (H4-K12 specific); histone methyltransferase activity (H4-K12 specific) |
| Major function | Catalysis of methyl group transfer from S-adenosyl-L-methionine to histone H4 lysine 12, forming S-adenosyl-L-homocysteine and H4K12me |
| Reaction | S-adenosyl-L-methionine + histone H4 L-lysine (position 12) = S-adenosyl-L-homocysteine + histone H4 N6-methyl-L-lysine (position 12) |
| Substrate | Histone H4 with unmethylated lysine 12 |
| Cofactor | S-adenosyl-L-methionine (SAM) |
| Product | S-adenosyl-L-homocysteine (SAH) and methylated histone H4K12 |
| Related processes | Chromatin organization, meiotic chromosome organization, heterochromatin compaction, epigenetic reprogramming |
What Is GO:0140984?
GO:0140984, histone H4K12 methyltransferase activity, is defined by QuickGO as the catalysis of the reaction: S-adenosyl-L-methionine + histone H4 L-lysine (position 12) = S-adenosyl-L-homocysteine + histone H4 N6-methyl-L-lysine (position 12). In other words, it is the enzymatic addition of a methyl group to the lysine residue at position 12 of the histone H4 protein. This molecular_function term falls under the ontology aspect molecular_function and includes synonyms such as histone H4K12 methylase activity, histone H4K12 methylation, histone-H4K12 methyltransferase activity, histone H4 lysine 12-specific methyltransferase activity, histone lysine N-methyltransferase activity (H4-K12 specific), histone methylase activity (H4-K12 specific), and histone methyltransferase activity (H4-K12 specific).
Why Is histone H4K12 methyltransferase activity Important in Cell Biology?
GO:0140984 is important because H4K12 methylation is a key component of the histone code that regulates chromatin architecture and gene expression programs. Balanced spatiotemporal arrangements of histone H3 and H4 post-translational modifications, including H4K12 methylation, are necessary for meiotic prophase I chromosome organization. The modification is dynamically reprogrammed during early embryonic development, and aberrant patterns are associated with reduced cloning efficiency in pigs and mice. In addition, pathogen effectors can manipulate host histone modifications, including H4K12 methylation, highlighting its role in host-pathogen crosstalk. Oncogenic transcription factors such as Myc also alter histone modification landscapes on target chromatin, suggesting that H4K12 methylation participates in cancer-related epigenetic reprogramming. Thus, understanding GO:0140984 informs studies of development, disease, and infection.
• H4K12 methylation is part of the histone code that regulates chromatin structure and gene expression.
• It is required for proper meiotic prophase I chromosome organization and balanced histone modification arrangements.
• Dynamic reprogramming of histone methylation, including H4K12, occurs during the first cell cycle of cloned embryos.
• Inhibition of histone methyltransferases such as BIX-01294 can improve epigenetic reprogramming and pig cloning efficiency.
• Oncogenic transcription factors like Myc alter histone modifications on target chromatin, linking H4K12 methylation to cancer biology.
• Pathogen effectors can modulate host histone modifications, including H4K12 methylation, during infection.
• The Tip60 histone acetyltransferase is involved in a heterochromatin compaction pathway that may intersect with histone methylation.
• HEMK2 protein methyltransferase exhibits distinct specificities for glutamine and lysine residues, informing studies of related methyltransferases.
• CRISPR-based perturbation of candidate H4K12 methyltransferases enables causal testing of their roles in chromatin regulation.
• Understanding H4K12 methylation may reveal therapeutic targets for diseases involving epigenetic dysregulation.
Molecular Mechanism of histone H4K12 methyltransferase activity
Substrate recognition and binding
In simple terms: The enzyme first grabs the histone H4 protein and finds the right spot, lysine 12.
Histone H4K12 methyltransferases must recognize the histone H4 tail and specifically bind to lysine 12 in a sequence context that distinguishes it from other lysine residues. This substrate specificity is a defining feature of GO:0140984 and is supported by studies of related methyltransferases such as HEMK2, which display distinct specificities for glutamine and lysine residues. The balanced spatiotemporal arrangement of histone H3 and H4 modifications, including H4K12 methylation, is necessary for meiotic prophase I chromosome organization, indicating that substrate recognition is tightly coupled to chromatin context.
Cofactor binding and methyl group transfer
In simple terms: The enzyme uses a helper molecule called SAM to donate a methyl group onto lysine 12.
The catalytic mechanism of GO:0140984 involves binding of the cofactor S-adenosyl-L-methionine (SAM), which serves as the methyl donor. The enzyme transfers the methyl group from SAM to the epsilon-amino group of histone H4 lysine 12, producing S-adenosyl-L-homocysteine (SAH) and methylated H4K12. This reaction is analogous to other histone lysine methyltransferase reactions, and the specificity of methyltransferases such as HEMK2 for lysine versus glutamine residues underscores the importance of active-site architecture in determining substrate preference.
Product formation and chromatin context
In simple terms: After the methyl group is added, the modified histone changes how chromatin behaves.
Following methyl group transfer, the newly formed H4K12me mark contributes to the local histone modification landscape. This mark can influence chromatin compaction and gene expression, as part of the broader histone code. Studies in cloned mouse embryos show dynamic reprogramming of histone acetylation and methylation during the first cell cycle, indicating that H4K12 methylation is dynamically regulated in chromatin contexts. In addition, the Tip60 histone acetyltransferase is involved in a heterochromatin compaction pathway, suggesting crosstalk between acetylation and methylation marks on histone H4.
Regulation by oncogenic and pathogen factors
In simple terms: Other proteins, such as Myc or pathogen effectors, can change how much H4K12 methylation occurs.
H4K12 methyltransferase activity can be modulated by oncogenic transcription factors and pathogen effectors. Myc-induced histone modifications on target chromatin include changes in methylation patterns, linking GO:0140984 to cancer-related epigenetic reprogramming. Pathogen effectors can also modulate host histone modifications, including H4K12 methylation, revealing crosstalk between host and pathogen epigenomes. These regulatory inputs highlight that H4K12 methylation is not constitutive but responds to cellular and environmental signals.
Crosstalk with other histone modifications
In simple terms: H4K12 methylation does not act alone; it talks to other histone marks.
Histone modifications often function in combinatorial patterns. Balanced spatiotemporal arrangements of histone H3 and H4 post-translational modifications are necessary for meiotic prophase I chromosome organization, implying that H4K12 methylation cooperates with other marks. Histone modification crosstalk between host and pathogen further illustrates how H4K12 methylation can be part of a larger regulatory network. Additionally, inhibition of histone methyltransferases by BIX-01294 alters epigenetic reprogramming, suggesting that H4K12 methylation intersects with other methylation and acetylation pathways.
Key Genes Involved in GO:0140984 histone H4K12 methyltransferase activity
The following genes and proteins are implicated in histone H4K12 methylation, its regulation, or related chromatin processes based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| HEMK2 | Protein methyltransferase with distinct specificities for glutamine and lysine residues | Provides mechanistic insights into lysine methylation specificity relevant to H4K12 methyltransferases |
| MYC | Oncogenic transcription factor that induces histone modifications on target chromatin | Links H4K12 methylation to cancer-related epigenetic reprogramming |
| TIP60 | Histone acetyltransferase involved in heterochromatin compaction | Suggests crosstalk between acetylation and methylation pathways |
| H4C1 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C2 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C3 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C4 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C5 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C6 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C7 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C8 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C9 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C10 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C11 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C12 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C13 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
| H4C14 | Histone H4 gene encoding the substrate for H4K12 methylation | Core substrate for GO:0140984 activity |
How Is histone H4K12 methyltransferase activity Regulated?
Histone H4K12 methyltransferase activity is regulated at multiple levels. The availability of the cofactor S-adenosyl-L-methionine (SAM) and the balance with S-adenosyl-L-homocysteine (SAH) influence methyltransferase reactions. Oncogenic transcription factors such as Myc can alter histone modification landscapes on target chromatin, thereby indirectly regulating H4K12 methylation. Pathogen effectors can modulate host histone modifications, including H4K12 methylation, during infection. In addition, dynamic reprogramming of histone acetylation and methylation occurs during the first cell cycle of cloned embryos, indicating that H4K12 methylation is subject to developmental regulation. Pharmacological inhibition of histone methyltransferases, such as with BIX-01294, can also change epigenetic reprogramming outcomes, suggesting that H4K12 methylation is responsive to small-molecule modulation.
histone H4K12 methyltransferase activity and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| MYC | Cancer and oncogenic epigenetic reprogramming | Myc-driven cancer cell lines with H4K12 methylation profiling |
| TIP60 | Heterochromatin compaction and genetic stability | TIP60 knockout or knockdown cells with H4K12me analysis |
| HEMK2 | Protein methylation specificity and related disorders | HEMK2 mutant cell lines to study lysine methylation |
| H4C1 | Developmental disorders and cloning efficiency | Cloned embryos with H4K12 methylation detection |
| Host-pathogen effectors | Infection and host epigenetic manipulation | Infected cells with pathogen effector expression |
Cancer and oncogenic epigenetic reprogramming
Oncogenic transcription factors such as Myc induce histone modifications on target chromatin, linking H4K12 methylation to cancer-related epigenetic reprogramming. Dysregulation of histone methyltransferase activity can contribute to aberrant gene expression in tumors, making GO:0140984 a potential node for therapeutic intervention. However, direct evidence for H4K12 methylation in specific cancers remains an active area of research, and conclusions should be drawn from experimental models rather than speculation.
Developmental disorders and cloning efficiency
Dynamic reprogramming of histone acetylation and methylation occurs during the first cell cycle of cloned mouse embryos, and abnormal patterns are associated with reduced developmental efficiency. Inhibition of histone methyltransferases with BIX-01294 improves epigenetic reprogramming and pig cloning efficiency, suggesting that H4K12 methylation levels must be precisely controlled for normal development. These findings imply that perturbations in GO:0140984 activity could contribute to developmental abnormalities, although direct causal links require further study.
Host-pathogen interactions and infection
Pathogen effectors can modulate host histone modifications, including H4K12 methylation, revealing crosstalk between host and pathogen epigenomes. This suggests that pathogens may exploit or disrupt H4K12 methylation to manipulate host gene expression during infection. Understanding these interactions could inform new strategies for treating infectious diseases, but the specific mechanisms remain to be fully elucidated.
Meiotic chromosome organization and fertility
Balanced spatiotemporal arrangements of histone H3 and H4 post-translational modifications, including H4K12 methylation, are necessary for meiotic prophase I chromosome organization. Disruption of these arrangements could impair meiosis and fertility. However, direct evidence linking H4K12 methylation to human infertility is limited, and further studies are needed to establish causality.
From histone H4K12 methyltransferase activity-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does knockout of a candidate H4K12 methyltransferase reduce H4K12 methylation? | CRISPR knockout cell lines |
| Does a point mutation in the catalytic domain abolish methyltransferase activity? | CRISPR point-mutation knock-in cell lines |
| Can a tagged H4K12 methyltransferase be used to map chromatin binding sites? | CRISPR knock-in of an epitope tag |
| Does overexpression of a candidate methyltransferase increase H4K12 methylation? | CRISPR overexpression cell lines |
| How does H4K12 methylation change during early embryonic development? | Cloned mouse embryos and pig cloning models |
| What is the role of H4K12 methylation in meiotic chromosome organization? | Meiotic prophase I cells with histone modification profiling |
How to Study the histone H4K12 methyltransferase activity Process
| Method | What It Measures | Typical Application |
|---|---|---|
| ChIP-qPCR | Enrichment of H4K12 methylation at specific loci | Target chromatin analysis |
| ChIP-seq | Genome-wide distribution of H4K12 methylation | Epigenomic profiling |
| In vitro methyltransferase assay | Enzymatic activity of candidate methyltransferases | GO:0140984 activity measurement |
| Western blot | Global levels of H4K12 methylation | Knockout validation |
| Immunofluorescence | Spatial distribution of H4K12 methylation | Meiotic chromosome organization |
| CRISPR knockout | Loss-of-function effects on H4K12 methylation | Causal gene testing |
| CRISPR point mutation | Effect of catalytic domain mutations | Mechanistic studies |
| Embryo developmental assay | Cloning efficiency and reprogramming | Early embryonic development |
Chromatin immunoprecipitation and histone modification profiling
Chromatin immunoprecipitation (ChIP) followed by quantitative PCR or sequencing can be used to map H4K12 methylation across the genome. This approach has been used to analyze Myc-induced histone modifications on target chromatin and to study balanced spatiotemporal arrangements of histone H3 and H4 modifications during meiotic prophase I. Antibodies specific for H4K12me are required, and validation with knockout controls is recommended.
Enzymatic methyltransferase assays
In vitro methyltransferase assays using recombinant enzymes and histone H4 substrates can directly measure GO:0140984 activity. These assays typically use S-adenosyl-L-methionine (SAM) as the methyl donor and detect the formation of S-adenosyl-L-homocysteine (SAH) or methylated H4K12. Such assays are useful for testing substrate specificity and the effects of mutations in candidate methyltransferases.
CRISPR-based perturbation and phenotypic analysis
CRISPR knockout, point mutation, knock-in, and overexpression models enable causal testing of candidate genes in H4K12 methylation. For example, knockout of a candidate methyltransferase can reduce H4K12 methylation, while point mutations in the catalytic domain can abolish activity. These models can be combined with developmental or infection assays to study the role of H4K12 methylation in cloned embryos or host-pathogen interactions.
Imaging and developmental assays
Immunofluorescence imaging can visualize H4K12 methylation patterns in cells and tissues, including during meiotic prophase I chromosome organization and early embryonic development. Developmental assays in cloned embryos can assess the impact of altered H4K12 methylation on cloning efficiency. These methods complement biochemical and genomic approaches.
How CRISPR Can Be Used to Study GO:0140984 histone H4K12 methyltransferase activity
Knockout
CRISPR knockout of candidate H4K12 methyltransferases can abolish or reduce H4K12 methylation, providing direct evidence for their role in GO:0140984. Knockout cell lines are useful for validating antibody specificity and for assessing downstream effects on chromatin structure and gene expression. In developmental contexts, knockout models can reveal requirements for H4K12 methylation in processes such as meiotic chromosome organization and early embryogenesis.
Point Mutation
CRISPR point mutation can be used to introduce catalytic-dead mutations in the active site of candidate H4K12 methyltransferases. Such models distinguish enzymatic activity from scaffolding functions and help define the catalytic mechanism of GO:0140984. Point mutations can also be used to test the importance of specific residues for substrate recognition and cofactor binding.
Knock-in
CRISPR knock-in of epitope tags or fluorescent reporters into endogenous H4K12 methyltransferase genes enables chromatin binding studies and live-cell imaging. Tagged knock-in models can be used to map the genomic localization of H4K12 methylation and to study its dynamics during processes such as meiotic prophase I and embryonic reprogramming.
Overexpression
CRISPR overexpression of candidate H4K12 methyltransferases can increase H4K12 methylation levels and test sufficiency for chromatin changes. Overexpression models are useful for studying the consequences of elevated H4K12 methylation in cancer-related contexts, such as Myc-driven epigenetic reprogramming, and for identifying downstream target genes.
How EDITGENE Supports histone H4K12 methyltransferase activity Research
Researchers studying histone H4K12 methyltransferase activity-related genes often need to determine whether a candidate gene is causally involved in H4K12 methylation and its downstream chromatin functions. EDITGENE provides a comprehensive suite of CRISPR-based services to generate knockout, point-mutation, knock-in, and overexpression cell models, as well as CRISPR library screening and bioinformatics support, enabling rigorous functional studies of GO:0140984.
Contact EDITGENE today to design your custom CRISPR model for histone H4K12 methyltransferase activity research.
Frequently Asked Questions About histone H4K12 methyltransferase activity
What is histone H4K12 methyltransferase activity?
Histone H4K12 methyltransferase activity (GO:0140984) is the catalysis of methyl group transfer from S-adenosyl-L-methionine to histone H4 lysine 12, producing S-adenosyl-L-homocysteine and methylated H4K12.
What genes are involved in histone H4K12 methylation?
Genes encoding histone H4 (such as H4C1-H4C14) provide the substrate, while candidate methyltransferases and regulators such as HEMK2, MYC, and TIP60 have been implicated in related methylation and chromatin processes.
What is the GO ID for histone H4K12 methyltransferase activity?
The GO ID is GO:0140984.
What is the reaction catalyzed by histone H4K12 methyltransferase?
The reaction is: S-adenosyl-L-methionine + histone H4 L-lysine (position 12) = S-adenosyl-L-homocysteine + histone H4 N6-methyl-L-lysine (position 12).
Why is H4K12 methylation important for meiosis?
Balanced spatiotemporal arrangements of histone H3 and H4 post-translational modifications, including H4K12 methylation, are necessary for meiotic prophase I chromosome organization.
How is H4K12 methylation reprogrammed in cloned embryos?
Dynamic reprogramming of histone acetylation and methylation occurs during the first cell cycle of cloned mouse embryos, and abnormal patterns can reduce developmental efficiency.
Can H4K12 methylation be targeted by drugs?
Inhibition of histone methyltransferases with compounds such as BIX-01294 can improve epigenetic reprogramming and pig cloning efficiency, suggesting that H4K12 methylation is pharmacologically modifiable.
What methods are used to study histone H4K12 methyltransferase activity?
Common methods include ChIP-qPCR, ChIP-seq, in vitro methyltransferase assays, Western blot, immunofluorescence, and CRISPR-based perturbation.
How do pathogens affect host H4K12 methylation?
Pathogen effectors can modulate host histone modifications, including H4K12 methylation, revealing crosstalk between host and pathogen epigenomes.
What CRISPR models are available for studying H4K12 methylation?
CRISPR knockout, point mutation, knock-in, and overexpression models can be used to test the causal role of candidate genes in H4K12 methylation and downstream phenotypes.
Conclusion
GO:0140984, histone H4K12 methyltransferase activity, is a molecular_function term that captures the enzymatic addition of a methyl group to histone H4 lysine 12. This modification participates in chromatin organization, meiotic progression, embryonic reprogramming, and host-pathogen interactions. Understanding its regulation and downstream effects requires integrating biochemical assays, genomic profiling, and CRISPR-based perturbation of candidate genes. EDITGENE provides end-to-end CRISPR services, including knockout, point mutation, knock-in, overexpression, library screening, and bioinformatics, to accelerate research on H4K12 methylation and its roles in development and disease.
References
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- 3. Miller SS et al.. 2026. Histone modification crosstalk between host and pathogen.. bioRxiv PMID: 42523259
- 4. Kumar SL et al.. 2024. Balanced spatiotemporal arrangements of histone H3 and H4 posttranslational modifications are necessary for meiotic prophase I chromosome organization.. J Cell Physiol 239(4):e31201 PMID: 38284481
- 5. Martinato F et al.. 2008. Analysis of Myc-induced histone modifications on target chromatin.. PLoS One 3(11):e3650 PMID: 18985155
- 6. Huang J et al.. 2016. BIX-01294 increases pig cloning efficiency by improving epigenetic reprogramming of somatic cell nuclei.. Reproduction 151(1):39-49 PMID: 26604326
- 7. Grézy A et al.. 2016. Control of genetic stability by a new heterochromatin compaction pathway involving the Tip60 histone acetyltransferase.. Mol Biol Cell 27(4):599-607 PMID: 26700317
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