BHMT
BHMT betaine-homocysteine methyltransferase — the molecular target that 1 compounds in the wiki act on.
In one line: A recycling enzyme that betaine feeds to support methylation and creatine production.
BHMT is an enzyme that recycles homocysteine (a molecule that's harmful when it builds up) back into useful methionine, using betaine as the helper. This supports "methylation" — a background chemistry your body uses for countless jobs — and frees up materials for making creatine. It's part of why betaine is a modest strength-and-power supplement, and why it supports healthy homocysteine levels.