GO:0019788 NEDD8 transferase activity: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0019788 NEDD8 transferase activity is a molecular function that catalyzes the covalent transfer of the ubiquitin-like protein NEDD8 from a donor (X-NEDD8) to a target protein (Y), forming a Y-NEDD8 conjugate.
• This activity is essential for neddylation, a post-translational modification that regulates protein stability, localization, and activity, and is implicated in cancer, viral infection, and vascular calcification [1,2,4,7].
• Key enzymes include the NEDD8-activating enzyme (NAE, a heterodimer of UBA3 and NAE1), the conjugating enzyme UBE2M (UBC12), and various E3 ligases such as CBL-b and Smurf1 [2,4].
• Neddylation of PTEN promotes its nuclear import and tumor development, highlighting the importance of this modification in cancer biology.
• Inhibitors of NEDD8 transferase activity, such as MLN4924, have shown anti-cancer effects but also neddylation-independent activities, underscoring the need for precise research tools.
• CRISPR-based knockout, point mutation, knock-in, and overexpression models are powerful approaches to dissect the roles of NEDD8 transferase components in health and disease.
Description
NEDD8 transferase activity (GO:0019788) is a molecular function that catalyzes the transfer of the ubiquitin-like protein NEDD8 from one protein to another via a covalent linkage. This activity is central to the process of neddylation, a post-translational modification that regulates the function of target proteins. The reaction can be summarized as X-NEDD8 + Y = Y-NEDD8 + X, where both X-NEDD8 and Y-NEDD8 are covalent conjugates. Neddylation is involved in diverse cellular processes, including cell cycle progression, DNA damage response, and signal transduction, and its dysregulation is associated with cancer, viral infections, and other diseases [1,2,4,7]. Researchers study NEDD8 transferase activity to understand how protein neddylation controls cellular physiology and to develop therapeutic strategies targeting this pathway.
NEDD8 transferase activity At A Glance
| GO ID | GO:0019788 |
|---|---|
| GO term | NEDD8 transferase activity |
| Ontology | molecular_function |
| Synonym | Hub1 conjugating enzyme activity, NEDD8 conjugating enzyme activity, RUB1 conjugating enzyme activity |
| Major function | Catalyzes the covalent attachment of NEDD8 to target proteins |
| Reaction | X-NEDD8 + Y = Y-NEDD8 + X |
| Related process | Neddylation |
| Key enzymes | NAE (UBA3/NAE1), UBE2M (UBC12), E3 ligases (e.g., CBL-b, Smurf1) |
What Is GO:0019788?
NEDD8 transferase activity (GO:0019788) is defined as the catalysis of the transfer of NEDD8 from one protein to another via the reaction X-NEDD8 + Y = Y-NEDD8 + X, where both X-NEDD8 and Y-NEDD8 are covalent linkages. In other words, it is the enzymatic activity that attaches the ubiquitin-like protein NEDD8 to a substrate protein, forming a covalent bond between the C-terminus of NEDD8 and a lysine residue on the target protein.
Why Is NEDD8 transferase activity Important in Cell Biology?
NEDD8 transferase activity is crucial because it governs the neddylation of key regulatory proteins, thereby influencing fundamental cellular processes such as proliferation, apoptosis, and stress responses [1,2,4,7]. Dysregulation of this activity has been linked to cancer progression, viral replication, and vascular calcification, making it a promising target for therapeutic intervention [1,2,4,7]. Understanding the molecular mechanisms and identifying the specific enzymes involved can lead to novel treatments for these diseases.
• Regulates protein stability and function through covalent attachment of NEDD8.
• Controls cell cycle progression and DNA damage response.
• Implicated in cancer development, including PTEN nuclear import and tumor growth.
• Plays a role in viral replication, such as Coxsackievirus B3.
• Involved in vascular calcification via PARP-1 neddylation.
• Modulates Hippo signaling through YAP1 neddylation.
• Essential for oocyte quality maintenance by stabilizing mitochondrial transcription.
• Targeted by small molecule inhibitors like MLN4924 for cancer therapy.
• Coordinates degradation of polyneddylated proteins by autophagy.
• Regulates PDK1-Akt signaling in KRAS-mutated colorectal cancer.
What Happens During NEDD8 transferase activity?
Activation of NEDD8 by NAE
In simple terms: First, NEDD8 is activated by an enzyme called NAE in an ATP-dependent manner.
The NEDD8-activating enzyme (NAE), a heterodimer of UBA3 and NAE1, catalyzes the adenylation of NEDD8 and forms a thioester bond with the catalytic cysteine of UBA3. This activation step is required for subsequent transfer of NEDD8 to the conjugating enzyme.
Transfer to the conjugating enzyme UBE2M
In simple terms: Next, NEDD8 is passed to a conjugating enzyme called UBE2M.
The activated NEDD8 is transferred from NAE to the active-site cysteine of the E2 conjugating enzyme UBE2M (also known as UBC12), forming a thioester-linked UBE2M-NEDD8 intermediate.
Substrate recognition by E3 ligases
In simple terms: Then, an E3 ligase helps bring the target protein and NEDD8 together.
E3 ligases, such as CBL-b or Smurf1, bind specific substrate proteins and facilitate the transfer of NEDD8 from UBE2M to a lysine residue on the substrate, forming an isopeptide bond [2,4].
Formation of NEDD8-substrate conjugate
In simple terms: Finally, NEDD8 is covalently attached to the target protein, changing its behavior.
The result is a neddylated substrate protein, which can alter its stability, localization, or activity. For example, neddylation of PTEN promotes its nuclear import and tumor development.
Key Genes Involved in GO:0019788 NEDD8 transferase activity
The following genes and proteins are key players in NEDD8 transferase activity and its regulation.
| Gene | Major Role | Research Relevance |
|---|---|---|
| NEDD8 | Ubiquitin-like protein transferred to substrates | Central to neddylation; target for modification studies |
| UBA3 | Catalytic subunit of NAE | Essential for NEDD8 activation; knockout lethal |
| NAE1 | Regulatory subunit of NAE | Required for NAE function; mutations affect neddylation |
| UBE2M (UBC12) | E2 conjugating enzyme | Transfers NEDD8 to substrates; key for neddylation |
| CBL-b | E3 ligase for PARP-1 | Mediates PARP-1 neddylation in vascular calcification |
| Smurf1 | E3 ligase for PDK1 | Targets PDK1 for neddylation in KRAS-mutated colorectal cancer |
| PTEN | Substrate of neddylation | Neddylation promotes nuclear import and tumor development |
| PARP-1 | Substrate of neddylation | Neddylation activates PARP-1 in vascular calcification |
| YAP1 | Substrate of neddylation | Neddylation enhances Hippo signaling |
| 3D polymerase | Substrate of neddylation | Neddylation promotes viral replication |
| HYPK | Coordinates degradation of polyneddylated proteins | Links neddylation to autophagy |
| MLN4924 | Inhibitor of NAE | Blocks neddylation; used in cancer research |
| PDK1 | Substrate of neddylation | Neddylation regulates PDK1-Akt signaling |
| Mitochondrial transcription factors | Substrates of neddylation | Neddylation stabilizes mitochondrial transcription in oocytes |
| RUB1 | Yeast homolog of NEDD8 | Model for studying neddylation |
| Hub1 | Yeast homolog of NEDD8 | Model for studying neddylation |
How Is NEDD8 transferase activity Regulated?
NEDD8 transferase activity is regulated at multiple levels. The availability of NEDD8, the activity of NAE, UBE2M, and E3 ligases, and the presence of de-neddylating enzymes (e.g., NEDP1) all influence the extent of substrate neddylation. Additionally, crosstalk with other post-translational modifications, such as ubiquitination and phosphorylation, can modulate neddylation. For instance, CBL-b-mediated neddylation of PARP-1 is induced under conditions of vascular calcification. Furthermore, the neddylation pathway can be inhibited by small molecules like MLN4924, which targets NAE and has been used to study neddylation-dependent processes.
NEDD8 transferase activity and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| PTEN | Cancer (tumor development) | Knockout or point mutation in cancer cell lines |
| Smurf1 | KRAS-mutated colorectal cancer | Knockout in colorectal cancer cells |
| PARP-1 | Vascular calcification | Knockout or point mutation in vascular smooth muscle cells |
| 3D polymerase | Coxsackievirus B3 infection | Knockout or point mutation in viral replicon systems |
| YAP1 | Hippo signaling dysregulation | Knockout or knock-in in cancer cell lines |
Cancer
Dysregulation of NEDD8 transferase activity is implicated in cancer. Neddylation of PTEN promotes its nuclear import and tumor development, suggesting that targeting this modification could be therapeutic. In KRAS-mutated colorectal cancer, Smurf1-mediated neddylation of PDK1 activates Akt signaling, supporting tumor growth. Inhibitors of NAE, such as MLN4924, have shown anti-cancer activity in preclinical models.
Viral Infection
Neddylation of viral proteins can enhance viral replication. For example, neddylation of the RNA-dependent RNA polymerase 3D of Coxsackievirus B3 promotes viral replication, highlighting a role for NEDD8 transferase activity in viral pathogenesis.
Vascular Calcification
CBL-b E3 ligase-mediated neddylation and activation of PARP-1 induce vascular calcification, a process that contributes to cardiovascular disease.
Reproductive Biology
Neddylation maintains oocyte quality by stabilizing mitochondrial transcription, indicating a role for NEDD8 transferase activity in fertility and early development.
From NEDD8 transferase activity-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does knockout of UBA3 abolish NEDD8 transferase activity? | CRISPR knockout of UBA3 in cell lines |
| What is the effect of a point mutation in NEDD8 on substrate binding? | CRISPR point mutation of NEDD8 |
| Can knock-in of tagged NEDD8 track its localization? | CRISPR knock-in of fluorescent tag |
| Does overexpression of UBE2M increase neddylation? | CRISPR overexpression of UBE2M |
| What is the role of CBL-b in PARP-1 neddylation? | Knockout of CBL-b in vascular smooth muscle cells |
| Does Smurf1 inhibition block PDK1 neddylation? | Knockout or point mutation of Smurf1 in colorectal cancer cells |
How to Study the NEDD8 transferase activity Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Mass spectrometry | Identification and quantification of neddylated proteins | Mapping neddylation sites |
| Western blot | Levels of NEDD8 conjugates | Validating knockout or inhibitor effects |
| Immunoprecipitation | Protein-protein interactions | Identifying substrates |
| Fluorescence microscopy | Localization of neddylated proteins | Studying nuclear import |
| CRISPR knockout | Loss of gene function | Assessing requirement for neddylation |
| CRISPR point mutation | Specific amino acid changes | Dissecting catalytic residues |
| CRISPR knock-in | Tagged endogenous proteins | Tracking localization and interactions |
| CRISPR overexpression | Increased gene expression | Gain-of-function studies |
Proteomics
Mass spectrometry-based proteomics can identify neddylated substrates and quantify changes in neddylation upon genetic or pharmacological perturbation. This approach has been used to map neddylation sites on proteins like PTEN and PARP-1 [1,4].
Western Blotting
Immunoblotting with anti-NEDD8 antibodies can detect global neddylation levels and specific neddylated proteins. This method is widely used to validate knockout or inhibitor effects [1,5].
Immunoprecipitation
Immunoprecipitation of NEDD8-conjugated proteins followed by mass spectrometry or western blotting can identify interaction partners and substrates, as shown for YAP1 and 3D polymerase [7,8].
Fluorescence Microscopy
Fluorescently tagged NEDD8 or substrates can be used to visualize neddylation dynamics and localization in live cells, providing insights into nuclear import of PTEN.
How CRISPR Can Be Used to Study GO:0019788 NEDD8 transferase activity
Knockout
CRISPR knockout of genes encoding NEDD8 transferase components (e.g., UBA3, UBE2M) or substrates (e.g., PTEN) can reveal their essential roles in neddylation and downstream processes. For example, knockout of UBA3 abolishes NEDD8 transferase activity and affects cell viability.
Point Mutation
Introducing point mutations in catalytic residues of NAE or UBE2M can dissect the enzymatic mechanism. Similarly, mutating the acceptor lysine in substrates (e.g., PTEN) can prevent neddylation and reveal its functional consequences.
Knock-in
Knock-in of epitope tags or fluorescent proteins into endogenous NEDD8 or substrate genes allows real-time tracking of neddylation dynamics and localization. This approach has been used to study PTEN nuclear import.
Overexpression
Overexpression of NEDD8, UBE2M, or E3 ligases can enhance neddylation and mimic disease states. For instance, overexpression of Smurf1 increases PDK1 neddylation and activates Akt signaling in colorectal cancer cells.
How EDITGENE Supports NEDD8 transferase activity Research
Researchers studying NEDD8 transferase activity-related genes often need to determine whether a candidate gene is causally involved in neddylation and its downstream effects. EDITGENE provides a comprehensive suite of CRISPR services to enable precise genetic manipulation and functional studies.
Contact EDITGENE today to design your custom CRISPR model for NEDD8 transferase activity research.
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| UBE2F Knockout HEK293 Cell Line | EDJ-KQ3914 | Human | 140739 | Details Get a Quote |
| RNF7 Knockout HEK293 Cell Line | EDJ-KQ6006 | Human | 9616 | Details Get a Quote |
| UBE2F Knockout A-549 Cell Line | EDJ-KQ26137 | Human | 140739 | Details Get a Quote |
| UBE2F Knockout HCT 116 Cell Line | EDJ-KQ26138 | Human | 140739 | Details Get a Quote |
| RNF7 Knockout A-549 Cell Line | EDJ-KQ30964 | Human | 9616 | Details Get a Quote |
| RNF7 Knockout HCT 116 Cell Line | EDJ-KQ30966 | Human | 9616 | Details Get a Quote |
| RNF7 Knockout HeLa Cell Line | EDJ-KQ30967 | Human | 9616 | Details Get a Quote |
| UBE2F Knockout HeLa Cell Line | EDJ-KQ24795 | Human | 140739 | Details Get a Quote |
| RBX1 Knockout HEK293T Cell Line | EDJ-KQ78167 | Human | 9978 | Details Get a Quote |
| RBX1 Knockout HCT 116 Cell Line | EDJ-KQ78168 | Human | 9978 | Details Get a Quote |
Frequently Asked Questions About NEDD8 transferase activity
What is NEDD8 transferase activity?
NEDD8 transferase activity (GO:0019788) is the enzymatic activity that catalyzes the covalent attachment of the ubiquitin-like protein NEDD8 to target proteins, a process called neddylation.
What genes are involved in NEDD8 transferase activity?
Key genes include NEDD8, UBA3, NAE1, UBE2M (UBC12), and E3 ligases such as CBL-b and Smurf1 [1,2,4].
What diseases are associated with NEDD8 transferase activity?
Dysregulation is linked to cancer, viral infections, vascular calcification, and reproductive disorders [1,2,4,6,7].
How is NEDD8 transferase activity regulated?
It is regulated by the availability of NEDD8, the activity of NAE, UBE2M, E3 ligases, and de-neddylating enzymes, as well as crosstalk with other modifications [1,4].
What is the role of NEDD8 transferase activity in cancer?
It promotes tumor development by modifying proteins like PTEN and PDK1, affecting their localization and signaling [1,2].
Can NEDD8 transferase activity be inhibited?
Yes, small molecule inhibitors like MLN4924 target NAE and block neddylation, but they may have neddylation-independent effects.
What methods are used to study NEDD8 transferase activity?
Common methods include western blotting, mass spectrometry, immunoprecipitation, and fluorescence microscopy [1,4,7].
How can CRISPR be used to study NEDD8 transferase activity?
CRISPR knockout, point mutation, knock-in, and overexpression models allow precise manipulation of genes involved in neddylation [1,2].
What is the difference between NEDD8 and ubiquitin?
NEDD8 is a ubiquitin-like protein that modifies substrates in a process similar to but distinct from ubiquitination, often regulating protein function rather than degradation.
What are the synonyms for NEDD8 transferase activity?
Synonyms include Hub1 conjugating enzyme activity, NEDD8 conjugating enzyme activity, and RUB1 conjugating enzyme activity.
Conclusion
NEDD8 transferase activity (GO:0019788) is a fundamental molecular function that controls protein neddylation, impacting diverse cellular processes and human diseases. Understanding its mechanism and regulation through CRISPR-based models and other advanced techniques is essential for developing targeted therapies. EDITGENE provides the tools and expertise to accelerate this research.
References
- 1. Xie P et al.. 2021. Neddylation of PTEN regulates its nuclear import and promotes tumor development.. Cell Res 31(3):291-311 PMID: 33299139
- 2. Peng Z et al.. 2025. Targeting Smurf1 to block PDK1-Akt signaling in KRAS-mutated colorectal cancer.. Nat Chem Biol 21(1):59-70 PMID: 39039255
- 3. Ghosh DK et al.. 2022. HYPK coordinates degradation of polyneddylated proteins by autophagy.. Autophagy 18(8):1763-1784 PMID: 34836490
- 4. Kwon DH et al.. 2024. CBL-b E3 ligase-mediated neddylation and activation of PARP-1 induce vascular calcification.. Exp Mol Med 56(10):2246-2259 PMID: 39349831
- 5. Mao H et al.. 2020. Neddylation-Independent Activities of MLN4924.. Adv Exp Med Biol 1217:363-372 PMID: 31898238
- 6. Ahmed AA et al.. 2026. NEDDylation maintains oocyte quality by stabilizing mitochondrial transcription.. Sci Adv 12(25):eaec3505 PMID: 42308310
- 7. Li S et al.. 2025. The neddylation of the RNA-dependent RNA polymerase 3D of Coxsackievirus B3 promotes viral replication.. J Virol 99(11):e0153525 PMID: 41170971
- 8. Chen M et al.. 2024. NEDD8 enhances Hippo signaling by mediating YAP1 neddylation.. J Biol Chem 300(8):107512 PMID: 38960037
