A major extracellular enzyme, GPX3, is also found in the cytoplasm and plasma membranes of the mammalian kidney, epididymis, heart, lung, liver, brain, adipose tissue, mammary gland, and gastrointestinal tract (Nirgude and Choudhary, 2021)
Chi EY, Krishnan S, Randolph TW, Carpenter JF
How B12 relates to energy production: Facilitates the metabolism of fats and carbohydrates into usable energy Supports red blood cell production, which carries oxygen to tissues Maintains nervous system function, affecting cognitive performance and mood Acts as a cofactor in metabolic pathways that contribute to energy production It is important to note that whilst B12 is essential for energy metabolism, there is no official link between B12 supplementation and increased energy levels in individuals with normal B12 status
[DOI] [PMC free article] [PubMed] [Google Scholar] 4.Plestina-Borjan I., Katusic D., Medvidovic-Grubisic M., Supe-Domic D., Bucan K., Tandara L., Rogosic V