It's a necessary building block for all protein in the body. (dogfoodinsider.com)
The third BCAA L - Isoleucine is also a crucial building block for protein synthesis and can significantly aid the energy supply of the mitochondria, the power plants inside each cell. (aminoacidstudies.org)
Researchers hypothesized the reason might be that the plants don't get enough nitrogen — a crucial building block for proteins — to sustain their spurt. (sciencemag.org)