GO:0006167 AMP biosynthetic process: Purine Nucleotide Synthesis, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0006167 (AMP biosynthetic process) describes the chemical reactions and pathways that result in the formation of adenosine monophosphate (AMP), a fundamental purine nucleotide.
• AMP is not only a building block of RNA but also a central regulator of energy homeostasis through AMP-activated protein kinase (AMPK).
• The pathway intersects with adenosine metabolism, adenylylation (AMPylation) of proteins, and purine salvage, linking it to diverse cellular functions.
• Dysregulation of AMP synthesis is associated with metabolic disorders such as myogenic hyperuricemia and with cancer cell proliferation.
• Key enzymes include adenylosuccinate synthase and adenylosuccinate lyase, which convert IMP to AMP in two steps.
• CRISPR-based models (knockout, point mutation, knock-in, overexpression) enable causal interrogation of AMP biosynthetic genes in disease and metabolism.
Description
Adenosine monophosphate (AMP) is a purine ribonucleotide that serves as a monomer for RNA, a precursor for ADP and ATP, and a signaling molecule in energy sensing. The Gene Ontology term GO:0006167, AMP biosynthetic process, defines the set of chemical reactions and pathways that lead to the formation of AMP. This process is essential for maintaining cellular nucleotide pools and for linking purine metabolism to energy status. Researchers study AMP biosynthesis to understand fundamental biochemistry, metabolic diseases, and potential therapeutic targets. The pathway is also relevant to protein AMPylation, a post-translational modification that uses AMP to regulate protein function. Given its central role, AMP biosynthetic process is a recurring focus in cancer metabolism, hyperuricemia, and mitochondrial biology.
AMP biosynthetic process At A Glance
| GO ID | GO:0006167 |
|---|---|
| GO term | AMP biosynthetic process |
| Ontology | biological_process |
| Synonym | AMP anabolism, AMP biosynthesis, AMP formation, AMP synthesis |
| Major function | Production of adenosine monophosphate (AMP) for RNA, energy metabolism, and signaling |
| Key enzymes | Adenylosuccinate synthase, adenylosuccinate lyase, adenine phosphoribosyltransferase |
| Pathway context | Purine ribonucleotide biosynthesis and salvage |
| Related processes | AMPylation, adenosine metabolism, AMPK signaling |
What Is GO:0006167?
The AMP biosynthetic process (GO:0006167) encompasses the chemical reactions and pathways that result in the formation of AMP, adenosine monophosphate. This includes de novo purine biosynthesis from IMP and salvage pathways that generate AMP from adenine or adenosine. The term is a biological process and is distinct from AMP catabolism or interconversion.
Why Is AMP biosynthetic process Important in Cell Biology?
AMP biosynthetic process is fundamental to cellular life because AMP is a building block of RNA and a precursor to ADP and ATP, the primary energy carriers. Beyond its role as a metabolite, AMP acts as a signaling molecule that activates AMPK, a master regulator of energy homeostasis. Dysregulation of AMP synthesis contributes to metabolic disorders such as myogenic hyperuricemia and is implicated in cancer cell proliferation. Moreover, AMP is used as a substrate in AMPylation, a post-translational modification that modulates protein activity and is exploited by bacterial pathogens. Understanding AMP biosynthesis therefore bridges basic biochemistry, disease mechanisms, and therapeutic development.
• Provides AMP for RNA synthesis and for the generation of ADP and ATP.
• Supplies AMP as a substrate for AMPylation, a regulatory protein modification.
• Regulates energy homeostasis via AMPK activation.
• Links purine metabolism to hyperuricemia and gout.
• Supports nucleotide pools required for rapid cell proliferation in cancer.
• Influences mitochondrial function and cellular stress responses.
• Is a target for antibacterial strategies due to bacterial AMPylation pathways.
• Enables studies of enzyme mechanisms such as adenylosuccinate lyase.
• Contributes to the understanding of adenosine signaling in the brain and immune system.
• Facilitates the development of CRISPR models for metabolic gene function.
What Happens During AMP biosynthetic process?
De novo synthesis from IMP
In simple terms: The cell builds AMP from a simpler purine intermediate called IMP.
In the de novo pathway, inosine monophosphate (IMP) is converted to adenylosuccinate by adenylosuccinate synthase, which adds aspartate. Adenylosuccinate lyase then removes fumarate to yield AMP. This two-step route is a major source of AMP for RNA and energy metabolism.
Salvage pathway from adenine
In simple terms: The cell recycles free adenine to make AMP.
Adenine phosphoribosyltransferase (APRT) catalyzes the transfer of a phosphoribosyl group from PRPP to adenine, forming AMP directly. This salvage route is energetically cheaper than de novo synthesis and is critical in tissues with high purine turnover.
Regulation by energy status
In simple terms: AMP levels rise when energy is low, activating AMPK.
AMP binds to the gamma subunit of AMPK, causing allosteric activation and promoting catabolic pathways that restore ATP. This feedback links AMP biosynthesis to cellular energy sensing.
AMPylation as a downstream use of AMP
In simple terms: AMP can be attached to proteins to change their function.
AMPylation is a post-translational modification in which an AMP moiety is covalently added to a protein, often on threonine or tyrosine residues. This reaction consumes ATP and releases pyrophosphate, and it is mediated by enzymes such as Fic proteins. Recent cryo-EM studies have revealed structural details of AMPylation by bacterial effectors.
Key Genes Involved in GO:0006167 AMP biosynthetic process
The following genes encode enzymes and regulators directly involved in AMP biosynthetic process and its downstream utilization.
| Gene | Major Role | Research Relevance |
|---|---|---|
| ADSS | Adenylosuccinate synthase; converts IMP to adenylosuccinate | Target for studying de novo AMP synthesis and purine disorders |
| ADSL | Adenylosuccinate lyase; converts adenylosuccinate to AMP | Mutations cause adenylosuccinate lyase deficiency |
| APRT | Adenine phosphoribosyltransferase; salvage of adenine to AMP | Deficiency leads to 2,8-dihydroxyadenine urolithiasis |
| PRPS1 | Phosphoribosyl pyrophosphate synthetase 1; supplies PRPP for salvage | Overactivity causes hyperuricemia and gout |
| AMPD1 | AMP deaminase 1; converts AMP to IMP | Deficiency associated with myogenic hyperuricemia |
| AK1 | Adenylate kinase 1; interconverts AMP, ADP, ATP | Regulates energy homeostasis in muscle |
| PRKAA1 | AMPK catalytic subunit alpha 1; senses AMP | Key energy sensor activated by AMP |
| PRKAA2 | AMPK catalytic subunit alpha 2; senses AMP | Isoform-specific roles in metabolism |
| FICD | Fic domain containing; AMPylates proteins | Regulates ER stress and AMPylation |
| HYPE | Huntingtin interacting protein E; AMPylates BiP | Modulates unfolded protein response |
| GART | Phosphoribosylglycinamide formyltransferase; de novo purine synthesis | Early step in purine biosynthesis |
| ATIC | AICAR transformylase/IMP cyclohydrolase; de novo purine synthesis | Bifunctional enzyme in purine pathway |
| PAICS | Phosphoribosylaminoimidazole carboxylase; de novo purine synthesis | Target in cancer metabolism |
| PPAT | Phosphoribosyl pyrophosphate amidotransferase; committed step of purine synthesis | Regulated by feedback inhibition |
| NUDT5 | Nudix hydrolase; hydrolyzes ADP-ribose to AMP | Links NAD metabolism to AMP pools |
| ENTPD1 | Ectonucleoside triphosphate diphosphohydrolase 1; generates AMP from ATP | Regulates extracellular adenosine |
| NT5E | CD73; converts AMP to adenosine | Immune regulation and cancer |
| ADK | Adenosine kinase; phosphorylates adenosine to AMP | Controls adenosine levels |
How Is AMP biosynthetic process Regulated?
AMP biosynthetic process is regulated at multiple levels. The de novo pathway is feedback-inhibited by purine nucleotides, including AMP, which allosterically inhibits PRPP amidotransferase. AMP levels are also controlled by AMP deaminase (AMPD1), which degrades AMP to IMP, and by adenylate kinase, which interconverts adenine nucleotides. Energy stress increases AMP concentrations, leading to AMPK activation, which in turn modulates metabolic enzymes and gene expression. Additionally, AMPylation of proteins by Fic enzymes can regulate signaling pathways in response to cellular stress.
AMP biosynthetic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| AMPD1 | Myogenic hyperuricemia | Knockout mouse or point mutation in muscle cells |
| ADSL | Adenylosuccinate lyase deficiency | Knock-in of patient mutations in cell lines |
| APRT | 2,8-dihydroxyadenine urolithiasis | APRT knockout cell model |
| PRPS1 | Hyperuricemia and gout | Overexpression of PRPS1 in hepatocytes |
| FICD | Neurodegeneration / ER stress | Knockout and AMPylation-deficient point mutants |
Myogenic hyperuricemia and purine disorders
Defects in AMP deaminase (AMPD1) can cause myogenic hyperuricemia, a condition in which exercise leads to excessive uric acid production due to impaired AMP catabolism. This highlights the importance of AMP biosynthetic and degradative balance in muscle metabolism.
Cancer metabolism
Rapidly proliferating cancer cells require high levels of nucleotides, including AMP, for RNA and DNA synthesis. Enzymes of the de novo purine pathway, such as ADSS and ADSL, are often upregulated in tumors, making them potential therapeutic targets.
Neurodegeneration and AMPylation
AMPylation of proteins by Fic enzymes such as HYPE regulates the unfolded protein response and has been linked to neurodegenerative diseases. Dysregulation of AMP-dependent signaling may contribute to neuronal stress.
Infectious disease
Bacterial effectors like VopS and IbpA use AMPylation to modify host proteins, disrupting signaling and immune responses. Structural studies of these enzymes inform drug design.
From AMP biosynthetic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of ADSS reduce AMP levels and proliferation? | ADSS knockout cell line (e.g., HeLa) |
| Does a specific ADSL mutation cause metabolic crisis? | Point mutation knock-in via CRISPR |
| Can AMPK activation be monitored by AMP biosynthetic flux? | Knock-in of fluorescent AMPK reporter |
| Does overexpression of PRPS1 drive hyperuricemia? | Transgenic overexpression mouse |
| Is AMPylation required for ER stress survival? | FICD knockout and catalytically dead knock-in |
| Can bacterial AMPylation be inhibited? | Bacterial effector overexpression in host cells |
How to Study the AMP biosynthetic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| LC-MS metabolomics | AMP, ADP, ATP concentrations | Quantify pathway flux in knockout cells |
| CRISPR knockout screening | Gene essentiality for AMP synthesis | Identify novel regulators |
| Ribo-seq | Translation of AMP biosynthetic enzymes | Assess translational control |
| Proteomics (AMPylation) | Protein AMPylation levels | Map downstream targets |
| Cryo-EM | 3D structure of enzyme-AMP complexes | Mechanistic studies |
| Western blot | Protein expression of ADSS, ADSL | Validate CRISPR models |
| Fluorescent AMPK reporter | AMPK activation status | Live-cell energy sensing |
| RNA-seq | Transcriptional changes in purine genes | Response to metabolic stress |
Metabolomics and nucleotide quantification
Liquid chromatography-mass spectrometry (LC-MS) can quantify AMP, ADP, and ATP levels in cells and tissues, providing direct readouts of AMP biosynthetic flux. This method is essential for validating genetic models.
CRISPR screening for purine pathway genes
Genome-wide CRISPR knockout screens can identify genes required for AMP biosynthesis under nutrient stress. Such screens have revealed dependencies on ADSS and ADSL in cancer cell lines.
Proteomics and AMPylation detection
Mass spectrometry-based proteomics can detect AMPylated proteins using AMP-specific antibodies or chemical probes. This approach maps the downstream impact of AMP availability.
Structural biology and cryo-EM
Cryo-EM and X-ray crystallography reveal how enzymes like adenylosuccinate lyase and Fic proteins bind AMP and catalyze transfer. These structures guide inhibitor design.
How CRISPR Can Be Used to Study GO:0006167 AMP biosynthetic process
Knockout
CRISPR knockout of ADSS or ADSL abolishes de novo AMP synthesis, causing auxotrophy for adenine and reduced proliferation. Such models are used to study nucleotide dependency in cancer.
Point Mutation
Introducing patient-specific point mutations in ADSL or APRT via CRISPR base editing or HDR allows functional assessment of enzyme activity and metabolite accumulation.
Knock-in
Knock-in of tagged AMPK subunits or fluorescent reporters enables real-time monitoring of AMP-mediated signaling in live cells.
Overexpression
CRISPR activation (CRISPRa) or cDNA overexpression of PRPS1 or ADSS increases AMP synthesis, modeling hyperuricemia and purine overproduction.
How EDITGENE Supports AMP biosynthetic process Research
Researchers studying AMP biosynthetic process-related genes often need to determine whether a candidate gene is causally involved in metabolite production, energy sensing, or disease phenotypes. EDITGENE provides end-to-end CRISPR services to generate precisely engineered cell models that answer these questions.
Contact EDITGENE today to design your custom CRISPR model for AMP biosynthetic process research.
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| NUDT2 Knockout HEK293 Cell Line | EDJ-KQ3227 | Human | 318 | Details Get a Quote |
| ADSS2 Knockout HEK293 Cell Line | EDJ-KQ3352 | Human | 159 | Details Get a Quote |
| ADSS1 Knockout HEK293 Cell Line | EDJ-KQ8157 | Human | 122622 | Details Get a Quote |
| ADSS1 Knockout A-549 Cell Line | EDJ-KQ34069 | Human | 122622 | Details Get a Quote |
| ADSS1 Knockout HCT 116 Cell Line | EDJ-KQ34070 | Human | 122622 | Details Get a Quote |
| NUDT2 Knockout HCT 116 Cell Line | EDJ-KQ23341 | Human | 318 | Details Get a Quote |
| NUDT2 Knockout A-549 Cell Line | EDJ-KQ24733 | Human | 318 | Details Get a Quote |
| NUDT2 Knockout HeLa Cell Line | EDJ-KQ24735 | Human | 318 | Details Get a Quote |
| ADSS2 Knockout A-549 Cell Line | EDJ-KQ26346 | Human | 159 | Details Get a Quote |
| ADSS2 Knockout HCT 116 Cell Line | EDJ-KQ26348 | Human | 159 | Details Get a Quote |
| ADSS2 Knockout HeLa Cell Line | EDJ-KQ26349 | Human | 159 | Details Get a Quote |
| ADSS1 Knockout HeLa Cell Line | EDJ-KQ32730 | Human | 122622 | Details Get a Quote |
Displaying Records 1 To 12 Of 12 Records
Frequently Asked Questions About AMP biosynthetic process
What is AMP biosynthetic process?
AMP biosynthetic process (GO:0006167) is the set of chemical reactions and pathways that produce adenosine monophosphate (AMP), a purine nucleotide used in RNA and energy metabolism.
What genes are involved in AMP biosynthetic process?
Key genes include ADSS, ADSL, APRT, PRPS1, and AMPD1, which encode enzymes for de novo synthesis and salvage of AMP.
How is AMP synthesized from IMP?
IMP is converted to adenylosuccinate by adenylosuccinate synthase (ADSS), then to AMP by adenylosuccinate lyase (ADSL).
What is the role of AMP in energy sensing?
AMP activates AMP-activated protein kinase (AMPK), which restores energy balance by promoting catabolic pathways.
What diseases are linked to AMP biosynthesis?
Disorders include myogenic hyperuricemia, adenylosuccinate lyase deficiency, and cancer metabolic reprogramming.
How can CRISPR be used to study AMP biosynthesis?
CRISPR knockout, point mutation, knock-in, and overexpression models allow causal testing of AMP pathway genes in cells and animals.
What is AMPylation?
AMPylation is a post-translational modification where an AMP molecule is covalently attached to a protein, often by Fic enzymes, regulating its function.
Which enzymes regulate AMP levels?
Adenylate kinase interconverts adenine nucleotides, while AMP deaminase (AMPD1) degrades AMP to IMP, balancing the pool.
Why is AMP biosynthesis important in cancer?
Cancer cells require high nucleotide levels for proliferation; targeting AMP synthesis enzymes may selectively inhibit tumor growth.
What methods are used to study AMP biosynthetic process?
LC-MS metabolomics, CRISPR screens, proteomics, and structural biology (cryo-EM) are commonly used.
Conclusion
AMP biosynthetic process (GO:0006167) is a central metabolic pathway that supplies AMP for RNA, energy currency, and signaling. Its dysregulation is linked to hyperuricemia, cancer, and neurodegenerative stress. CRISPR-based models provide powerful tools to dissect the causal roles of AMP pathway genes. EDITGENE offers comprehensive services to accelerate this research.
References
- 1. Camici M et al.. 2018. The Inside Story of Adenosine.. Int J Mol Sci 19(3) PMID: 29522447
- 2. Yamasaki T et al.. 1996. [Myogenic hyperuricemia].. Nihon Rinsho 54(12):3343-8 PMID: 8976117
- 3. Hedberg C et al.. 2015. Molecular perspectives on protein adenylylation.. ACS Chem Biol 10(1):12-21 PMID: 25486069
- 4. Zhang Z et al.. 2025. Cryo-EM Detection of AMPylated Histidine Implies Covalent Catalysis in AMPylation Mediated by a Bacterial Effector.. J Mol Biol 437(3):168917 PMID: 39694182
- 6. Gulen B et al.. 2022. Revisiting AMPylation through the lens of Fic enzymes.. Trends Microbiol 30(4):350-363 PMID: 34531089
- 8. Chan HJ et al.. 2025. Structural Heterogeneity of Proteoform-Ligand Complexes in Adenosine Monophosphate-Activated Protein Kinase Uncovered by Integrated Top-Down Mass Spectrometry.. J Am Chem Soc 147(34):30809-30819 PMID: 40811720
