TIL about fluorinase, the only known enzyme catalyzing (unsurprisingly) formation of a C-F bond: https://en.wikipedia.org/wiki/Fluorinase
@whitequark well, now I know where how all those quirky and uncommon biological organofluorine compounds like fluoroacetic acid come from
@whitequark https://en.wikipedia.org/wiki/4-Fluoro-L-threonine is one. Fluorocitric acid is another
@mona oh neat!