The alpha carbon is a chiral carbon atom, therefore, all alpha amino acids except one can exist in either of two enantiomers, called l or d amino acids, which are mirror images of each other. which amino acid id the exception

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

increased stability in the completion of fluorine's outer shell.

може ли да зареждате повече информация, моля