is heme included with selenium in glutathione peroxidase Selenium: How Much Optimal For Health? Glutathione peroxidase 4: a new
Description
10.1212/WNL.49.6.1570

doi:10.1038/ni.3333

Amino acid transporters, specific metabolic enzymes, autophagy-associated proteins and even the amino acid itself can all be potential targets for controlling cancer growth
This process is indispensable for the synthesis of nucleotides that are critical for cell proliferation and growth regulation (169,170)

This is particularly relevant for medications with narrow therapeutic windows
