Image Credentials: Image Title: Missing Link Found: Scientists Solve the Mystery of How Vitamin B5 Powers Your Cells Source: (sora.openai) Date: March 2026. Attribution: This image was created using AI-generated imagery (sora.openai) and does not depict a real-world scene.
By Open Chronicle Science Staff
For decades, biologists have understood that Coenzyme A (CoA), a vital molecule derived from Vitamin B5, is the essential fuel that keeps our cellular “power plants” running. However, a fundamental mystery remained: how does this molecule actually get inside the mitochondria, where it is needed most?
A new study published in Nature Metabolism by researchers at the Yale School of Medicine has finally identified the specific transport system responsible for moving CoA into the mitochondria, solving a long-standing puzzle in human biology.
The Metabolic Puzzle
Coenzyme A is a workhorse of metabolism. It is involved in hundreds of chemical reactions, including the breakdown of fats, carbohydrates, and proteins to produce energy. While scientists knew that the majority of the body’s CoA resides inside the mitochondria, the mitochondrial inner membrane is notoriously selective, acting like a high-security border that many molecules cannot cross on their own.
Until now, the “vehicle” or “gatekeeper” that allowed CoA to enter these energy-producing structures was unknown.
The Discovery of the Transport System
The Yale research team identified the specific protein complex that acts as the transport system for CoA. By using advanced cellular imaging and genetic mapping, they were able to pinpoint the mechanism that recognizes CoA and shuttles it across the mitochondrial membrane.
“This is a fundamental piece of the metabolic map that has been missing for years,” the researchers noted. Understanding this delivery system is more than just academic; it has profound implications for treating diseases where this process goes wrong.
Implications for Disease and Aging
The discovery opens new doors for medical research, particularly in the fields of:
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Neurodegeneration: Emerging evidence suggests that dysregulated mitochondrial metabolism is a major contributor to brain disorders and psychiatric conditions.
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Metabolic Dysfunction: Diseases like diabetes and certain genetic metabolic disorders may be linked to failures in how CoA is transported and used.
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Mitochondrial Health: As we age, mitochondrial efficiency tends to decline. This discovery could lead to targeted therapies that “recharge” cells by ensuring they have the necessary nutrients to produce energy.
By solving how Vitamin B5-derived molecules reach their destination, scientists can now begin to develop treatments that target these specific transport pathways to restore health in failing cells.
Story Source:
Materials provided by Yale School of Medicine. Originally written by Mallory Locklear, PhD. Note: Content may be edited for style and length.
Journal Reference:
- Ran Liu, Zihan Zhang, Aye K. Kyaw, Kariona A. Grabińska, Hardik Shah, Hongying Shen. Cellular pan-chain acyl-CoA profiling reveals SLC25A42/SLC25A16 in mitochondrial CoA import and metabolism. Nature Metabolism, 2025; 7 (9): 1871 DOI: 10.1038/s42255-025-01358-y