3-Aminoisobutyric acid
3-Aminoisobutyric acid (also known as β-aminoisobutyric acid or BAIBA) is a product formed by the catabolism of thymine and valine. During exercise, the increase of PGC-1α protein triggers the secretion of BAIBA from exercising muscles into the blood (concentration 2 to 3 μM in human serum).