GO:0080019 alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0080019 describes an NADPH-dependent enzyme activity that reduces very long-chain fatty acyl-CoA substrates to very long-chain primary fatty alcohols.
• The reaction consumes two NADPH molecules and two protons and releases two NADP+, CoA, and the fatty alcohol product.
• This activity is part of the fatty alcohol biosynthetic route and is distinct from acyl-CoA reductases that form aldehydes or from fatty acid synthases.
• Enzyme preparations from cultured fibroblasts can be used to measure acyl-CoA reductase activities, including those acting on long-chain acyl-CoA substrates.
• Defects in peroxisomal fatty acid metabolism, as seen in Zellweger syndrome, alter the handling of very long-chain fatty acids and related acyl-CoA derivatives.
• CRISPR knockout, point-mutation, knock-in, and overexpression models enable causal testing of candidate genes annotated with GO:0080019.
Description
GO:0080019, alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity, is a molecular function term that captures the NADPH-dependent conversion of a very long-chain fatty acyl-CoA into a very long-chain primary fatty alcohol. This activity sits at the interface of fatty acid metabolism and lipid alcohol biosynthesis, and it is experimentally tractable because the substrates and products are chemically distinct and can be resolved by biochemical assays. For researchers, the term provides a precise annotation target when assigning function to uncharacterized acyl-CoA reductases and when interpreting lipidomic or metabolic labeling data. The reaction is defined as a very long-chain fatty acyl-CoA + 2 NADPH + 2 H+ = a very long-chain primary fatty alcohol + 2 NADP+ + CoA, which means the enzyme couples two reducing equivalents to the release of CoA and the formation of a primary alcohol. Because very long-chain fatty acids and their derivatives are central to membrane biology and peroxisomal metabolism, perturbations in this activity can be studied in patient-derived fibroblasts and in genetically engineered cell models. The Zellweger syndrome literature provides a classic context in which acyl-CoA handling and reductase activities have been measured in cultured fibroblasts, making it a useful reference point for experimental design.
alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity At A Glance
| GO ID | GO:0080019 |
|---|---|
| GO term | alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity |
| Ontology | molecular_function |
| Synonym | fatty acyl CoA reductase (alcohol-forming) activity; fatty acyl-CoA reductase (alcohol-forming) activity; fatty-acyl-CoA reductase (alcohol-forming) activity |
| Major function | NADPH-dependent reduction of very long-chain fatty acyl-CoA to a very long-chain primary fatty alcohol |
| Reaction | a very long-chain fatty acyl-CoA + 2 NADPH + 2 H+ = a very long-chain primary fatty alcohol + 2 NADP+ + CoA |
| Cofactor | NADPH (reducing agent); NADP+ is released |
| Substrate class | very long-chain fatty acyl-CoA |
| Product class | very long-chain primary fatty alcohol |
| Related disease context | peroxisomal disorders such as Zellweger syndrome, where acyl-CoA metabolism is perturbed |
What Is GO:0080019?
In plain terms, GO:0080019 is the activity of an enzyme that takes a very long-chain fatty acyl-CoA, uses two molecules of NADPH and two protons, and produces a very long-chain primary fatty alcohol plus two NADP+ and CoA. The term is a molecular_function annotation and is synonymous with fatty acyl-CoA reductase (alcohol-forming) activity, fatty acyl CoA reductase (alcohol-forming) activity, and fatty-acyl-CoA reductase (alcohol-forming) activity. It should not be confused with activities that stop at the aldehyde oxidation state or with acyl-CoA synthetases that activate fatty acids to acyl-CoAs.
Why Is alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity Important in Cell Biology?
GO:0080019 matters because it defines a specific, measurable enzymatic step that links very long-chain fatty acyl-CoA pools to primary fatty alcohol products, and because defects in peroxisomal fatty acid metabolism can alter the flux through such reactions. Researchers studying lipid metabolism, membrane homeostasis, and peroxisomal disease need this annotation to distinguish alcohol-forming reductases from aldehyde-forming or synthetic enzymes. In cell models such as patient-derived fibroblasts, acyl-CoA reductase activities can be assayed directly, providing a functional readout for genetic variants and for CRISPR-engineered perturbations.
• Provides a precise molecular_function annotation for alcohol-forming very long-chain fatty acyl-CoA reductases.
• Defines a reaction that consumes NADPH and releases CoA, making it traceable by cofactor and thiol measurements.
• Connects very long-chain fatty acyl-CoA metabolism to primary fatty alcohol production.
• Offers a functional assay endpoint in cultured fibroblasts and engineered cell lines.
• Helps interpret peroxisomal disease biology, including Zellweger syndrome, where acyl-CoA handling is altered.
• Supports lipidomic and metabolic labeling studies that track fatty alcohol formation.
• Enables causal testing of candidate genes by CRISPR knockout or point mutation.
• Aids annotation of uncharacterized reductases that act on very long-chain acyl-CoA substrates.
• Provides a basis for comparing alcohol-forming versus aldehyde-forming reductase activities.
• Supports drug or genetic screens that modulate very long-chain fatty alcohol synthesis.
What Happens During alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity?
Substrate recognition and binding of very long-chain fatty acyl-CoA
In simple terms: The enzyme first grabs a very long-chain fatty acyl-CoA substrate.
The reaction begins when the enzyme binds a very long-chain fatty acyl-CoA, positioning the thioester carbonyl for reduction. This substrate class is defined by a long hydrocarbon tail and a CoA thioester, and the enzyme must accommodate the very long-chain acyl moiety. In cultured fibroblasts, acyl-CoA reductase activities can be measured using radiolabeled or fluorogenic acyl-CoA substrates, allowing substrate preference to be assessed.
NADPH-dependent reduction and cofactor usage
In simple terms: Two NADPH molecules donate electrons to convert the acyl chain into an alcohol.
The catalytic cycle consumes two NADPH molecules and two protons, generating two NADP+ molecules. This distinguishes GO:0080019 from NADH-dependent or aldehyde-forming activities, and it means that NADPH supply and regeneration can influence flux through the reaction. Assays that monitor NADPH oxidation at 340 nm can therefore be used to follow the activity in cell lysates or partially purified preparations.
Release of very long-chain primary fatty alcohol and CoA
In simple terms: The final products are a fatty alcohol and CoA.
The reaction yields a very long-chain primary fatty alcohol plus CoA and NADP+. The release of CoA is a useful analytical handle because thiol-reactive reagents can detect free CoA formation. In fibroblast-based assays, product formation can be resolved by thin-layer chromatography or mass spectrometry to confirm the alcohol product.
Integration with peroxisomal and cellular lipid metabolism
In simple terms: This activity is part of the broader lipid handling machinery of the cell.
Very long-chain fatty acyl-CoA species are handled by peroxisomal and endoplasmic reticulum pathways, and defects in peroxisomal metabolism, as in Zellweger syndrome, can alter the flux of acyl-CoA intermediates. Measuring alcohol-forming reductase activity in patient-derived fibroblasts provides a way to link genotype to biochemical phenotype. This context is important when interpreting whether a candidate gene truly encodes a GO:0080019 activity or acts upstream in acyl-CoA generation.
Key Genes Involved in GO:0080019 alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity
The following genes and gene families are relevant to the study of GO:0080019, based on their roles in fatty acyl-CoA metabolism, fatty alcohol biosynthesis, and peroxisomal lipid handling.
| Gene | Major Role | Research Relevance |
|---|---|---|
| FAR1 | Fatty acyl-CoA reductase family member implicated in alcohol-forming reduction | Candidate for GO:0080019 annotation and knockout studies |
| FAR2 | Fatty acyl-CoA reductase family member with reported alcohol-forming activity | Target for point-mutation and overexpression experiments |
| ACOX1 | Peroxisomal acyl-CoA oxidase acting on very long-chain acyl-CoA | Upstream of acyl-CoA pools relevant to reductase assays |
| ABCD1 | Peroxisomal transporter for very long-chain fatty acids | Model for altered acyl-CoA substrate supply |
| PEX genes | Peroxisome biogenesis factors | Zellweger syndrome context for acyl-CoA metabolism |
| ACSL1 | Long-chain acyl-CoA synthetase | Generates acyl-CoA substrates for downstream reductases |
| ACSL4 | Acyl-CoA synthetase family member | Contributes to acyl-CoA pool composition |
| FASN | Fatty acid synthase | Provides fatty acid precursors for acyl-CoA formation |
| ELOVL1 | Very long-chain fatty acid elongase | Elongates fatty acids that can be activated to acyl-CoA |
| ELOVL3 | Fatty acid elongase | Contributes to very long-chain acyl-CoA substrate supply |
| ELOVL6 | Long-chain fatty acid elongase | Shapes acyl chain length distribution |
| DGAT1 | Diacylglycerol acyltransferase | Competes for acyl-CoA pools |
| DGAT2 | Diacylglycerol acyltransferase | Uses acyl-CoA for triacylglycerol synthesis |
| ACOT1 | Acyl-CoA thioesterase | Regulates free fatty acid and acyl-CoA balance |
| ACOT2 | Acyl-CoA thioesterase | Modulates acyl-CoA availability |
| CPT1A | Carnitine palmitoyltransferase 1A | Directs acyl-CoA toward oxidation |
| HADHA | Mitochondrial trifunctional protein subunit | Fatty acid oxidation context for acyl-CoA flux |
| SLC25A17 | Peroxisomal solute carrier | Supports peroxisomal acyl-CoA metabolism |
How Is alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity Regulated?
The activity annotated by GO:0080019 is regulated at the level of substrate supply, cofactor availability, and cellular lipid demand. NADPH regeneration pathways influence the reducing power available for the reaction, while acyl-CoA synthetases and thioesterases determine the pool of very long-chain fatty acyl-CoA substrates. In peroxisomal disorders such as Zellweger syndrome, altered peroxisomal function changes the handling of very long-chain fatty acids and their acyl-CoA derivatives, which can indirectly affect reductase activity measurements in cultured fibroblasts.
alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| PEX genes | Zellweger syndrome and peroxisomal biogenesis disorders | Patient-derived fibroblasts with acyl-CoA reductase assays |
| ABCD1 | X-linked adrenoleukodystrophy and very long-chain fatty acid accumulation | CRISPR knockout cell line with lipidomic readout |
| ACOX1 | Peroxisomal acyl-CoA oxidation defects | Knockout and rescue with wild-type or mutant cDNA |
| FAR1 | Fatty alcohol biosynthesis and lipid metabolism | Overexpression and point-mutation models |
| FAR2 | Fatty acyl-CoA reductase-related lipid biology | Knockout with NADPH consumption assay |
Peroxisomal disorders and Zellweger syndrome
Zellweger syndrome is a peroxisomal biogenesis disorder in which very long-chain fatty acid metabolism is impaired. Fibroblasts from Zellweger syndrome patients have been used to study enzymes that catalyze the biosynthesis of lysophosphatidate and its ether analog, providing a biochemical framework for measuring acyl-CoA-dependent activities in disease cells. Because GO:0080019 acts on very long-chain fatty acyl-CoA, its activity may be altered in cells with peroxisomal defects, making patient fibroblasts a relevant model for functional assays.
Inherited lipid metabolism disorders
Disorders of fatty acid oxidation and acyl-CoA handling can change the availability of very long-chain fatty acyl-CoA substrates. Measuring alcohol-forming reductase activity in patient-derived or CRISPR-engineered cells can help determine whether a variant affects this specific step or acts upstream in acyl-CoA generation. Such functional readouts complement genetic testing and lipidomic profiling.
Cancer and metabolic reprogramming
Altered lipid metabolism is a hallmark of many cancers, and acyl-CoA pools are rewired to support membrane synthesis and signaling. Although direct evidence linking GO:0080019 to cancer is limited, the activity can be studied in cancer cell lines using NADPH consumption and fatty alcohol product assays to test whether it contributes to lipid remodeling. CRISPR knockout of candidate reductase genes provides a causal test in such models.
From alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of a candidate gene reduce alcohol-forming very long-chain fatty acyl-CoA reductase activity? | CRISPR knockout cell line |
| Does a specific missense variant alter catalytic activity? | Point-mutation knock-in cell line |
| Can wild-type cDNA rescue the knockout phenotype? | Knock-in or overexpression rescue model |
| Where is the enzyme localized within the cell? | Tagged knock-in with fluorescent tag |
| Does overexpression increase fatty alcohol production? | Overexpression cell model |
| Which acyl-CoA chain lengths are preferred? | Knockout plus substrate-specific biochemical assay |
How to Study the alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity Process
| Method | What It Measures | Typical Application |
|---|---|---|
| NADPH oxidation assay | Consumption of NADPH during reduction | Enzyme activity in cell lysates |
| CoA release assay | Free CoA generated by the reaction | Confirmation of alcohol-forming activity |
| Thin-layer chromatography | Separation of fatty alcohol products | Product identification in fibroblast assays |
| LC-MS lipidomics | Very long-chain fatty alcohol species | Profiling of lipid changes after knockout |
| RNA-seq | Expression of candidate reductase genes | Prioritization of genes for functional testing |
| Proteomics | Protein abundance of acyl-CoA metabolic enzymes | Validation of expression changes |
| Fluorescence imaging | Subcellular localization of tagged enzyme | Organelle assignment of activity |
| CRISPR knockout | Loss-of-function phenotype | Causal testing of candidate genes |
Biochemical reductase assays
Direct measurement of GO:0080019 activity uses very long-chain fatty acyl-CoA substrates and NADPH, monitoring NADPH oxidation at 340 nm or product formation by chromatography or mass spectrometry. These assays can be performed on lysates from cultured fibroblasts or engineered cell lines, and they provide a functional readout for genetic perturbations.
Lipidomics and metabolic labeling
Lipidomic profiling can detect very long-chain primary fatty alcohols and related lipids, while stable-isotope labeling can trace carbon flux from fatty acids into alcohol products. Combining lipidomics with CRISPR knockout of candidate genes helps establish whether a specific enzyme contributes to the observed lipid species.
Transcriptomics and proteomics
RNA-seq and quantitative proteomics can assess expression of candidate reductases and related acyl-CoA metabolic genes across conditions. These datasets help prioritize genes for functional testing and can reveal compensatory changes after knockout.
Imaging and subcellular localization
Fluorescent tagging of candidate enzymes by knock-in allows localization studies to determine whether the activity resides in peroxisomes, endoplasmic reticulum, or other compartments. Co-localization with organelle markers provides spatial context for the biochemical reaction.
How CRISPR Can Be Used to Study GO:0080019 alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity
Knockout
CRISPR knockout of a candidate gene annotated with GO:0080019 can abolish or reduce alcohol-forming very long-chain fatty acyl-CoA reductase activity in cell lines. Knockout clones are validated by sequencing and by biochemical assay, and the resulting phenotype can be compared with parental cells to establish causality.
Point Mutation
Point-mutation knock-in introduces specific missense variants into the endogenous locus to test whether a residue is required for catalysis or substrate binding. This approach is useful when patient variants of uncertain significance are found in candidate reductase genes.
Knock-in
Knock-in of a tagged or epitope-labeled allele allows localization and interaction studies without overexpression artifacts. It can also be used to insert a rescue cDNA or a reporter under the endogenous promoter.
Overexpression
Overexpression of a candidate reductase gene can increase flux through the alcohol-forming reaction and raise very long-chain fatty alcohol levels, providing a gain-of-function test. Overexpression models are also useful for producing sufficient enzyme for biochemical characterization.
How EDITGENE Supports alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity Research
Researchers studying alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity-related genes often need to determine whether a candidate gene is causally involved in the reaction, whether a specific variant alters catalysis, and where the enzyme acts within the cell. EDITGENE provides the CRISPR and cell-model tools required to answer these questions with publication-ready rigor.
Contact EDITGENE today to design your custom CRISPR model for alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity research.
Frequently Asked Questions About alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity
What is GO:0080019?
GO:0080019 is the molecular function term for alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity, which reduces a very long-chain fatty acyl-CoA to a very long-chain primary fatty alcohol using NADPH.
What reaction does alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity catalyze?
It catalyzes a very long-chain fatty acyl-CoA + 2 NADPH + 2 H+ = a very long-chain primary fatty alcohol + 2 NADP+ + CoA.
What genes are involved in alcohol-forming very long-chain fatty acyl-CoA reductase (NADP+) activity?
Candidate genes include fatty acyl-CoA reductase family members such as FAR1 and FAR2, as well as upstream acyl-CoA metabolic genes like ACSL1 and ACOX1.
Which cofactor is required for GO:0080019 activity?
NADPH is the reducing cofactor, and two molecules are consumed per reaction, producing two NADP+.
How can I measure alcohol-forming very long-chain fatty acyl-CoA reductase activity in cells?
Activity can be measured in cell lysates by monitoring NADPH oxidation at 340 nm or by detecting the fatty alcohol product using chromatography or mass spectrometry.
Is GO:0080019 related to Zellweger syndrome?
Zellweger syndrome involves defective peroxisomal fatty acid metabolism, which can alter very long-chain fatty acyl-CoA handling and provides a disease context for studying this activity in patient fibroblasts.
What is the difference between alcohol-forming and aldehyde-forming acyl-CoA reductase activity?
Alcohol-forming activity, as defined by GO:0080019, produces a primary fatty alcohol, whereas aldehyde-forming activities stop at the aldehyde oxidation state.
Can CRISPR knockout help study GO:0080019?
Yes, CRISPR knockout of a candidate gene can reduce or abolish the activity, providing causal evidence for gene function.
What cell models are suitable for studying GO:0080019?
Cultured fibroblasts, including patient-derived lines, and CRISPR-engineered cell lines are suitable for biochemical and lipidomic assays of this activity.
How does EDITGENE support research on GO:0080019?
EDITGENE provides knockout, point-mutation, knock-in, overexpression, CRISPR library screening, and bioinformatics services for genes related to this activity.
Conclusion
GO:0080019 defines a specific NADPH-dependent reaction that converts very long-chain fatty acyl-CoA into a very long-chain primary fatty alcohol, and it provides a precise annotation for functional studies of lipid metabolism. By combining biochemical assays with CRISPR-engineered cell models, researchers can determine which genes encode this activity, how variants affect catalysis, and how the reaction integrates with peroxisomal and cellular lipid pathways. EDITGENE offers the full suite of cell-model and screening services needed to advance such studies toward publication.
References
- 1. Webber KO et al.. 1987. Properties of the enzymes catalyzing the biosynthesis of lysophosphatidate and its ether analog in cultured fibroblasts from Zellweger syndrome patients and normal controls.. Arch Biochem Biophys 254(2):611-20 PMID: 3646870
