Protein Regulating Brown Fat Metabolism Identified
Researchers have discovered a protein that influences how brown fat burns energy in response to cold and diet.
Updated on Oct. 11, 2026 in Weight Loss
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Scientists have identified a protein called SLC25A34 that regulates metabolic processes within brown fat cells. The discovery explains how the body adjusts calorie burning based on cold exposure and dietary intake.
Why it matters
Understanding the mechanisms behind brown fat activation provides insight into how the body manages energy. This protein acts as a key sensor that coordinates metabolic responses to temperature, dietary fat, and daily biological rhythms.
Researchers observed that SLC25A34 levels in brown fat increased 90-fold following 24 hours of cold exposure at 39°F. Additionally, higher levels of this protein in human subcutaneous fat correlate with a lower body mass index.
The players
University of Copenhagen
This is a public research university in Denmark that served as the primary location for the metabolic study.
University of Debrecen
This institution in Hungary acted as the site for the collection and analysis of human fat cells used in the research.
The details
The research team at the University of Copenhagen found that SLC25A34 regulates fuel burning by responding to environmental cues like body clock signals and temperature. Experiments showed that mice lacking this protein experienced reduced oxygen consumption, while human fat cells exhibited decreased fuel burning when the protein levels were experimentally lowered.
Timeline
October 11, 2026: Study findings were published in the journal Science.
The Big Picture
This discovery marks a shift in our understanding of brown adipose tissue metabolic activation by identifying the specific protein that bridges the gap between environmental stimuli and cellular energy output. It refines existing models of thermogenesis by pinpointing how internal biological rhythms dictate metabolic rates.
The identification of this protein may eventually lead to new therapeutic strategies for managing metabolic health and weight. Understanding how dietary fat and temperature affect fuel burning provides a foundation for future treatments targeting energy regulation in fat cells.
The takeaway
This discovery highlights the complex relationship between our daily biological clock and how the body processes energy from fat. Scientists are now one step closer to understanding the precise molecular switches that govern calorie burning in humans.
What happens next
Researchers intend to perform further experiments to determine if SLC25A34 functions by directly transporting oxaloacetate in artificial membranes.
Further reading
For more information on the role of fat metabolism, explore our Weight Loss section.
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