See photos below.
Like our hands, tetrahedral molecules can be, non-superimposable mirror images. But, don’t forget three point attachments.
Relates, especially to protein shapes. So, enzyme-substrate, lock and key interactions.
Archaebacter doesn’t mind racemic mixed. But, Plant and Animal Kingdoms are fussy it’s never a true mix of 50:50 amino acids. But, three-point attachment is important for amino acids functioning.
Personally, I think phenylalanine sweetener tastes nice. Well, a few of these Nobel laureates are tackling the issue. At least, it appears All about Chemistry.
Dave T
(I’m hiding under my bed, at the moment?)
Blogging again? 