It concerns a type of molecule that has a non-superposable mirror image.

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34
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4answers
816 views

Why are amino acids in biology homochiral?

Why are nearly all amino acids in organisms left-handed (exception is glycine which has no isomer) when abiotic samples typical have an even mix of left- and right-handed molecules?
13
votes
3answers
2k views

What happens to dextrorotatory amino acids in humans?

As indicated by this question, most of the amino acids in the human body have the L-chirality. As enzymes also have handedness, what happens to the D-amino acids that end up within the human body? Are ...
12
votes
3answers
291 views

Is there any evolutionary advantage of selection of L-amino acid over D-amino acid?

After listening to a scientific talk, I had this question that why in the natural selection process, are the L-amino acids selected over the D- form. However, we still we produce D-amino acids; ...
9
votes
2answers
388 views

Chiral (a)symmetry of curly hair (and fur)

Some people have curly hair, as well as fur of some animals can be curly. However, shapes which are curly are not mirror symmetric, much alike screws or chiral molecules. The question is whether ...
0
votes
1answer
33 views

Amino acids in human cancer cells expose dextrorotation?

I would like to know if the amino acids in the human cancer cells are dextrorotatory or levorotatory. I mean the majority of them. They expose levorotation just like the amino acids in the normal ...
-1
votes
0answers
16 views

Would an ecosystem of right handed living organisms be able to form a parallel ecosystem here on Earth? [closed]

Efforts are under way to create the mirror-image version of ordinary life. While it seems that such organisms should be immune from attacks by ordinary lifeforms, the biochemistry of one doesn't seem ...