SLC39A
SLC39A / ZIP zinc transporters — the molecular target that 1 compounds in the wiki act on.
In one line: The doorways that carry zinc into your cells.
SLC39A refers to the family of transporters (called ZIP) that move zinc into your cells. Zinc is a helper in over a hundred reactions, including making testosterone and running your immune system. Athletes lose zinc in sweat, so deficiency is common — and it directly lowers testosterone.
Fixing a zinc shortage reliably helps hormones and immunity; taking extra when you're already fine does little.