GO:0004176 ATP-dependent peptidase activity: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0004176 ATP-dependent peptidase activity is defined as catalysis of peptide bond hydrolysis driven by ATP hydrolysis.
• ATP-dependent proteases are found in both prokaryotic and eukaryotic cells and couple ATP binding or hydrolysis to substrate unfolding, translocation, and degradation.
• The activity can be mechanistically uncoupled from ATP hydrolysis in some systems, as shown for HslVU where proteolytic activity can be uncoupled from ATP hydrolysis.
• YcaO enzymes represent a distinct class of ATP-dependent peptidases that catalyze ATP-dependent cyclodehydration and peptide bond formation in ribosomal peptide biosynthesis.
• Mitochondrial ATP-dependent peptidases such as OMA1 are integrated into stress-responsive signaling, including the integrated stress response and ATF4-dependent transcriptional programs [2,5].
• Dysregulation of ATP-dependent proteolysis contributes to disease biology, including spastic ataxia type 5 and proteomic instability in autophagy-deficient skeletal muscle [5,8].
Description
ATP-dependent peptidase activity (GO:0004176) describes the catalysis of peptide bond hydrolysis using the free energy of ATP hydrolysis. This molecular function is essential for controlled protein degradation, quality control, and the processing of specific substrates in both prokaryotic and eukaryotic cells. Unlike simple proteases that rely solely on catalytic chemistry, ATP-dependent peptidases often use ATP to unfold, translocate, or remodel substrates before cleavage. The functional importance of this activity is illustrated by classical studies of the Escherichia coli Lon (capR) protein, which exhibits ATP hydrolysis-dependent protease activity. Similarly, the HslVU protease provides a paradigm for understanding how ATP binding and hydrolysis can be uncoupled from peptide bond cleavage. Beyond canonical proteolysis, ATP-dependent peptidase chemistry is also used in biosynthetic pathways, as shown for YcaO-mediated ATP-dependent peptidase activity in ribosomal peptide biosynthesis. In eukaryotic cells, mitochondrial ATP-dependent peptidases participate in stress signaling and proteostasis, with OMA1 and ATF4-linked responses implicated in disease-relevant outcomes [2,5]. This article integrates the QuickGO definition with verified literature to provide a research-grade overview of GO:0004176, its mechanisms, associated genes, disease links, and experimental methods.
ATP-dependent peptidase activity At A Glance
| GO ID | GO:0004176 |
|---|---|
| GO term | ATP-dependent peptidase activity |
| Ontology | molecular_function |
| Synonym | ATP-dependent proteolysis |
| Definition | Catalysis of the hydrolysis of peptide bonds, driven by ATP hydrolysis. |
| Major function | ATP-powered cleavage of peptide bonds in protein substrates, often coupled to unfolding or translocation. |
| Representative enzymes | Lon (capR) in E. coli, HslVU, YcaO enzymes, and mitochondrial ATP-dependent peptidases such as OMA1 [1,3,4,5]. |
| Mechanistic feature | ATP binding or hydrolysis can be uncoupled from peptide bond cleavage in some systems. |
| Disease relevance | Linked to spastic ataxia type 5 and proteomic instability in autophagy-deficient skeletal muscle [5,8]. |
What Is GO:0004176?
GO:0004176 ATP-dependent peptidase activity is a molecular function defined as the catalysis of peptide bond hydrolysis driven by ATP hydrolysis. In practice, this means that the enzyme uses ATP to power the cleavage of peptide bonds, often as part of a larger machine that recognizes, unfolds, or translocates protein substrates. The synonym ATP-dependent proteolysis captures the degradative outcome, but the term itself refers specifically to the catalytic activity. Mechanistic studies show that ATP binding and hydrolysis can be coupled to different steps, and in some enzymes the proteolytic activity can be uncoupled from ATP hydrolysis. The activity is not limited to degradative proteolysis; YcaO enzymes use ATP-dependent peptidase chemistry in ribosomal peptide biosynthesis.
Why Is ATP-dependent peptidase activity Important in Cell Biology?
ATP-dependent peptidase activity is central to protein quality control, cellular stress responses, and the regulated turnover of key regulatory proteins. Because ATP hydrolysis provides energy for substrate unfolding and translocation, these enzymes can degrade folded or aggregated proteins that simple proteases cannot handle. This activity also contributes to mitochondrial stress signaling and integrated stress responses, which influence cell survival and disease outcomes [2,5]. In bacteria, ATP-dependent proteases such as Lon control the stability of regulatory proteins and are important for stress survival. In biotechnology and natural product research, ATP-dependent peptidase chemistry in YcaO enzymes enables the biosynthesis of ribosomal peptides. Consequently, understanding GO:0004176 is relevant to cancer biology, neurodegeneration, metabolic stress, and microbial physiology [2,5,8].
• Provides ATP-powered protein degradation essential for proteostasis in prokaryotes and eukaryotes.
• Enables degradation of folded or aggregated proteins through ATP-dependent unfolding and translocation.
• Supports mitochondrial stress responses and ATF4-dependent transcriptional programs.
• Contributes to the integrated stress response and disease outcomes such as spastic ataxia type 5.
• Controls regulatory protein stability in bacteria, as shown for Lon (capR) in E. coli.
• Can be mechanistically uncoupled from ATP hydrolysis, providing a model for studying energy coupling.
• Participates in ribosomal peptide biosynthesis through YcaO-mediated ATP-dependent peptidase activity.
• Links to proteomic integrity in autophagy-deficient skeletal muscle.
• Represents a target class for understanding stress adaptation and protein quality control [2,6].
• Offers experimental opportunities for CRISPR knockout, point mutation, and knock-in studies of ATP-dependent peptidases [3,4,5].
Molecular Mechanism of ATP-dependent peptidase activity
Substrate recognition and ATP-dependent unfolding
In simple terms: The enzyme first grabs the target protein and uses ATP to pull it apart so it can be cut.
ATP-dependent peptidases recognize specific substrate features and then use ATP binding or hydrolysis to unfold or remodel the substrate before peptide bond cleavage. In classical systems such as Lon (capR), protease activity is dependent on ATP hydrolysis, indicating that energy input is required for efficient proteolysis. This coupling allows the enzyme to act on folded proteins that would otherwise resist degradation.
Catalytic cleavage of peptide bonds
In simple terms: Once the substrate is prepared, the enzyme cuts the peptide bond.
The defining catalytic event of GO:0004176 is the hydrolysis of peptide bonds. In HslVU, the proteolytic activity can be uncoupled from ATP hydrolysis, demonstrating that peptide bond cleavage and ATP consumption are separable steps in some enzymes. This uncoupling provides a mechanistic window into how ATP binding, ATP hydrolysis, and catalysis are coordinated.
ATP binding versus ATP hydrolysis
In simple terms: ATP does more than one job: it can act as a switch and as an energy source.
ATP-dependent peptidases use ATP binding and hydrolysis for distinct functions, including substrate engagement, unfolding, and translocation. The HslVU system shows that proteolytic activity can be uncoupled from ATP hydrolysis, meaning that ATP binding alone may support some steps while hydrolysis drives others. This distinction is important for interpreting experiments that use non-hydrolyzable ATP analogs or ATPase-deficient mutants.
Biosynthetic ATP-dependent peptidase activity
In simple terms: Some enzymes use ATP-dependent peptide chemistry to build peptides, not just destroy them.
YcaO enzymes catalyze ATP-dependent peptidase activity in ribosomal peptide biosynthesis, expanding the functional repertoire of GO:0004176 beyond degradation. This biosynthetic activity highlights that ATP-dependent peptidase chemistry can be used for cyclodehydration and peptide bond formation in natural product pathways. Researchers studying ribosomal peptides should consider YcaO enzymes as representatives of this GO term.
Mitochondrial and stress-responsive ATP-dependent peptidases
In simple terms: In mitochondria, these enzymes help cells respond to stress and maintain protein quality.
Mitochondrial ATP-dependent peptidases participate in stress-responsive signaling, including the integrated stress response and ATF4-dependent transcriptional programs [2,5]. OMA1-mediated integrated stress response has been shown to be beneficial in spastic ataxia type 5, linking this activity to disease-relevant mitochondrial proteostasis. Multi-omics analyses have identified ATF4 as a key regulator of the mitochondrial stress response, providing a framework for understanding how ATP-dependent peptidases integrate into cellular stress networks.
Key Genes Involved in GO:0004176 ATP-dependent peptidase activity
The following genes and proteins represent major experimental models and functional nodes associated with ATP-dependent peptidase activity (GO:0004176).
| Gene | Major Role | Research Relevance |
|---|---|---|
| Lon (capR) | ATP hydrolysis-dependent protease in E. coli K-12 | Classical model for ATP-dependent proteolysis and bacterial stress responses |
| HslVU | ATP-dependent protease with uncouplable proteolytic activity | Model for studying ATP binding versus hydrolysis in peptide bond cleavage |
| YcaO | ATP-dependent peptidase activity in ribosomal peptide biosynthesis | Biosynthetic model for ATP-dependent peptide chemistry |
| OMA1 | Mitochondrial protease linked to integrated stress response | Disease model for spastic ataxia type 5 and mitochondrial stress |
| ATF4 | Key regulator of mitochondrial stress response | Transcription factor integrating stress signals with proteostasis |
| 20S proteasome | Degradation machinery affected by translation limitation | Model for proteomic integrity in autophagy-deficient muscle |
| Erythroleukemia particle-associated protease | ATP-dependent proteolytic activity in erythroleukemia cells | Early evidence for particle-associated ATP-dependent proteolysis |
| Mitochondrial AAA+ proteases | ATP-dependent protein quality control | General framework for ATP-dependent peptidase function |
| Bacterial ATP-dependent proteases | Stress survival and regulatory protein turnover | Prokaryotic model systems for GO:0004176 |
| Eukaryotic ATP-dependent proteases | Cytosolic and organellar proteostasis | Comparative studies of ATP-dependent proteolysis |
| Lon homologs | ATP-dependent proteolysis in diverse organisms | Evolutionary and functional studies |
| HslV homologs | ATP-dependent protease complexes | Structural and mechanistic studies |
| YcaO homologs | Ribosomal peptide biosynthesis | Natural product and biosynthetic engineering |
| OMA1 homologs | Mitochondrial stress signaling | Disease modeling and stress response studies |
| ATF4 target genes | Integrated stress response output | Transcriptional readouts of mitochondrial stress |
| Autophagy-related factors | Crosstalk with proteasomal degradation | Studies of proteomic integrity under autophagy deficiency |
How Is ATP-dependent peptidase activity Regulated?
ATP-dependent peptidase activity is regulated at multiple levels, including substrate availability, ATP levels, and stress-responsive signaling. The integrated stress response and ATF4-dependent transcription regulate mitochondrial stress responses that involve ATP-dependent peptidases [2,5]. In autophagy-deficient skeletal muscle, limiting cap-dependent translation increases 20S proteasomal degradation and protects proteomic integrity, indicating crosstalk between translation, autophagy, and proteasomal pathways. Bacterial ATP-dependent proteases such as Lon are regulated by stress conditions and control the stability of regulatory proteins. Mechanistic regulation also occurs at the level of ATP binding versus hydrolysis, as shown by uncoupling of proteolysis from ATP hydrolysis in HslVU.
ATP-dependent peptidase activity and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| OMA1 | Spastic ataxia type 5 and mitochondrial stress | Knockout or point-mutation models in neuronal cells |
| ATF4 | Mitochondrial stress response regulation | Overexpression and knockout models for stress signaling |
| 20S proteasome components | Proteomic integrity in autophagy-deficient skeletal muscle | Knockout models in muscle cells |
| Lon (capR) | Bacterial stress and regulatory protein turnover | Bacterial knockout and point-mutation models |
| HslVU | ATP-dependent proteolysis mechanisms | Biochemical and genetic uncoupling experiments |
Neurodegeneration and spastic ataxia
OMA1-mediated integrated stress response has been linked to spastic ataxia type 5, where sustained stress signaling appears beneficial in disease models. This connects ATP-dependent peptidase activity to mitochondrial proteostasis and neurodegeneration. ATF4, a key regulator of the mitochondrial stress response, further integrates these signals into transcriptional programs relevant to neuronal survival.
Muscle proteostasis and autophagy deficiency
In autophagy-deficient skeletal muscle, limiting cap-dependent translation increases 20S proteasomal degradation and protects proteomic integrity. This suggests that ATP-dependent proteolysis and proteasomal pathways compensate for defective autophagy in muscle. The findings highlight the importance of proteostasis networks in muscle biology.
Bacterial stress and regulatory protein turnover
The Lon (capR) protein of Escherichia coli K-12 exhibits ATP hydrolysis-dependent protease activity, which is important for bacterial stress responses and the turnover of regulatory proteins. HslVU provides an additional bacterial model where proteolytic activity can be uncoupled from ATP hydrolysis. These systems are relevant to understanding how pathogens adapt to stress and how ATP-dependent proteolysis contributes to bacterial physiology [3,4].
From ATP-dependent peptidase activity-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is the ATP-dependent peptidase essential for stress survival? | CRISPR knockout of Lon or HslV homologs [3,4] |
| Does ATP hydrolysis uncoupling alter proteolysis? | Point mutation in ATPase domains of HslVU |
| Does OMA1-mediated stress signaling protect against ataxia? | Knock-in or knockout models of OMA1 in neuronal cells |
| How does ATF4 regulate mitochondrial stress genes? | Overexpression and knockout of ATF4 |
| Does translation limitation affect proteasomal degradation? | Knockout models in autophagy-deficient muscle cells |
| Can YcaO activity be engineered for peptide biosynthesis? | Overexpression and point mutation of YcaO enzymes |
How to Study the ATP-dependent peptidase activity Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Biochemical protease assay | Peptide bond cleavage with or without ATP [3,4] | Testing ATP dependence of proteolysis [3,4] |
| Multi-omics profiling | Transcriptomic and proteomic changes | Identifying stress response regulators such as ATF4 |
| Proteomic integrity assays | Protein degradation and quality control | Studying autophagy-deficient muscle models |
| Biosynthetic pathway analysis | Ribosomal peptide product formation | Characterizing YcaO enzyme activity |
| Genetic knockout studies | Loss-of-function phenotypes [3,5] | Testing essentiality of ATP-dependent peptidases [3,5] |
| Point mutation analysis | ATPase versus protease coupling | Dissecting mechanistic steps in HslVU |
| Disease model phenotyping | Stress response and survival | Evaluating OMA1-mediated stress in ataxia models |
| Translation inhibition assays | Cap-dependent translation effects | Linking translation to proteasomal degradation |
Biochemical protease assays
ATP-dependent peptidase activity can be measured using biochemical assays that monitor peptide bond cleavage in the presence and absence of ATP [3,4]. These assays are essential for determining whether proteolysis is coupled to ATP hydrolysis or can be uncoupled, as shown for HslVU. Classical studies of Lon (capR) used such approaches to demonstrate ATP hydrolysis-dependent protease activity.
Multi-omics and stress response profiling
Multi-omics analysis has identified ATF4 as a key regulator of the mitochondrial stress response, providing a systems-level view of how ATP-dependent peptidases integrate into cellular networks. Transcriptomic and proteomic profiling can reveal downstream effects of ATP-dependent peptidase activity on gene expression and protein stability. These approaches are useful for linking GO:0004176 to disease-relevant pathways.
Proteomic integrity and degradation studies
Proteomic approaches can assess how ATP-dependent proteolysis and proteasomal degradation maintain protein quality control. In autophagy-deficient skeletal muscle, limiting cap-dependent translation increases 20S proteasomal degradation and protects proteomic integrity, illustrating the value of proteomic readouts. Such methods help distinguish ATP-dependent peptidase contributions from other degradation pathways.
Biosynthetic pathway analysis
YcaO-mediated ATP-dependent peptidase activity in ribosomal peptide biosynthesis can be studied using genetic, biochemical, and analytical chemistry methods. These approaches help define substrate specificity and product formation in natural product pathways. They also expand the experimental toolkit for studying GO:0004176 beyond canonical proteolysis.
How CRISPR Can Be Used to Study GO:0004176 ATP-dependent peptidase activity
Knockout
CRISPR knockout can be used to eliminate ATP-dependent peptidase genes such as Lon, HslV homologs, or OMA1 to test their essential roles in stress survival and proteostasis [3,4,5]. Knockout models help determine whether the catalytic activity of GO:0004176 is required for specific phenotypes [3,5]. These models are foundational for linking genotype to function [3,4,5].
Point Mutation
Point mutations in ATPase domains can uncouple ATP hydrolysis from proteolysis, as demonstrated for HslVU. CRISPR point mutation allows precise testing of catalytic residues and ATP-binding motifs in ATP-dependent peptidases. Such models are valuable for dissecting the mechanistic steps of GO:0004176.
Knock-in
Knock-in of tagged or reporter alleles can enable visualization and purification of ATP-dependent peptidases in their native context [1,5]. This approach is useful for studying OMA1 localization and stress-induced dynamics. It also supports biochemical characterization of YcaO enzymes in biosynthetic pathways.
Overexpression
Overexpression of ATP-dependent peptidases or their regulators such as ATF4 can amplify stress responses and reveal downstream effects [2,5]. Overexpression models are useful for testing whether increased activity protects or harms cells under stress [2,5]. They also facilitate biochemical studies of YcaO-mediated peptide biosynthesis.
How EDITGENE Supports ATP-dependent peptidase activity Research
Researchers studying ATP-dependent peptidase activity-related genes often need to determine whether a candidate gene is causally involved in proteostasis, stress signaling, or disease phenotypes. EDITGENE provides CRISPR-based cell model services that enable precise manipulation of genes associated with GO:0004176, from knockout to point mutation, knock-in, and overexpression. These models support mechanistic studies, drug target validation, and disease modeling in a publication-ready format.
Contact EDITGENE today to design your custom CRISPR model for ATP-dependent peptidase activity research.
Frequently Asked Questions About ATP-dependent peptidase activity
What is ATP-dependent peptidase activity?
ATP-dependent peptidase activity (GO:0004176) is the catalysis of peptide bond hydrolysis driven by ATP hydrolysis.
What genes are involved in ATP-dependent peptidase activity?
Representative genes include Lon (capR), HslVU components, YcaO, OMA1, and ATF4-linked stress response genes [1,2,3,4,5].
How is ATP-dependent peptidase activity different from simple proteolysis?
ATP-dependent peptidases use ATP to unfold or translocate substrates, allowing degradation of folded proteins that simple proteases cannot handle.
Can ATP-dependent peptidase activity be uncoupled from ATP hydrolysis?
Yes, in HslVU the proteolytic activity can be uncoupled from ATP hydrolysis, showing that peptide bond cleavage and ATP consumption are separable.
What is the role of Lon in ATP-dependent proteolysis?
The Lon (capR) protein of Escherichia coli K-12 exhibits ATP hydrolysis-dependent protease activity and is a classical model for ATP-dependent proteolysis.
How does OMA1 relate to disease?
OMA1-mediated integrated stress response is beneficial in spastic ataxia type 5, linking ATP-dependent peptidase activity to neurodegeneration.
What is the role of ATF4 in mitochondrial stress?
Multi-omics analysis identified ATF4 as a key regulator of the mitochondrial stress response, integrating ATP-dependent peptidase activity into stress signaling.
How does autophagy deficiency affect proteasomal degradation?
In autophagy-deficient skeletal muscle, limiting cap-dependent translation increases 20S proteasomal degradation and protects proteomic integrity.
What experimental methods are used to study ATP-dependent peptidase activity?
Biochemical protease assays, multi-omics profiling, proteomic integrity assays, and biosynthetic pathway analysis are commonly used [1,2,3,4,8].
How can CRISPR help study ATP-dependent peptidase activity?
CRISPR knockout, point mutation, knock-in, and overexpression models enable precise testing of gene function and mechanism in ATP-dependent peptidase pathways [3,4,5].
Conclusion
ATP-dependent peptidase activity (GO:0004176) is a fundamental molecular function that couples ATP hydrolysis to peptide bond cleavage, enabling protein quality control, stress responses, and biosynthetic peptide chemistry [1,6]. Mechanistic studies of Lon, HslVU, and YcaO enzymes have revealed diverse modes of ATP coupling, including uncoupling of proteolysis from ATP hydrolysis [3,4]. In eukaryotic cells, mitochondrial ATP-dependent peptidases such as OMA1 and stress regulators like ATF4 connect this activity to disease-relevant pathways, including spastic ataxia type 5 and proteomic integrity in muscle [2,5,8]. CRISPR-based cell models provide a powerful approach to dissect these mechanisms and translate them into therapeutic insights.
References
- 1. Zheng Y et al.. 2023. YcaO-mediated ATP-dependent peptidase activity in ribosomal peptide biosynthesis.. Nat Chem Biol 19(1):111-119 PMID: 36280794
- 2. Quirós PM et al.. 2017. Multi-omics analysis identifies ATF4 as a key regulator of the mitochondrial stress response in mammals.. J Cell Biol 216(7):2027-2045 PMID: 28566324
- 3. Charette MF et al.. 1981. ATP hydrolysis-dependent protease activity of the lon (capR) protein of Escherichia coli K-12.. Proc Natl Acad Sci U S A 78(8):4728-32 PMID: 6458036
- 4. Huang H et al.. 1997. Proteolytic activity of the ATP-dependent protease HslVU can be uncoupled from ATP hydrolysis.. J Biol Chem 272(34):21364-72 PMID: 9261150
- 5. Franchino CA et al.. 2024. Sustained OMA1-mediated integrated stress response is beneficial for spastic ataxia type 5.. Brain 147(3):1043-1056 PMID: 37804316
- 6. Goldberg AL. 1990. ATP-dependent proteases in prokaryotic and eukaryotic cells.. Semin Cell Biol 1(6):423-32 PMID: 2103893
- 7. Rieder RF et al.. 1985. A particle-associated ATP-dependent proteolytic activity in erythroleukemia cells.. J Biol Chem 260(4):2015-8 PMID: 3882684
- 8. Dong H et al.. 2025. Limiting cap-dependent translation increases 20S proteasomal degradation and protects the proteomic integrity in autophagy-deficient skeletal muscle.. Autophagy 21(6):1212-1227 PMID: 39878121
