If you mix up chirality, a protein's properties change enormously. Life couldn't operate with just random mixtures of stuff.

Ronald Breslow

Categorized in : Stuff Protein Mixtures

If you have a universe that was just the mirror image of the one we know about, then in fact, presumably it would have right-handed amino acids. That's why I'm only half kidding when I say there is a guy on the other side of the universe with his heart on the right hand side.

mirrors heart hands