Aren't all biological tissues made out of proteins? I mean, the very mechanism of DNA transcription implies that products are necessarily polymer-like, if I un

Aren't all biological tissues made out of proteins? I mean, the very mechanism of DNA transcription implies that products are necessarily polymer-like, if I understand correctly. DNA can't make metals. I suppose some purely enzymatic mechanism could produce 3D-cristals (a metal is a macroscopic aggregate of microscopic crystals, right?), but apparently no such mechanism exists. It'd be great though, as we could probably replicate it. I would also say that nature does make metals, it just needs to go through a behavioral layer.