The other 150 A.A.’s are still in us. For instance, the main thing our bodies need are not glycoproteins but Hydrogen and Oxygen…WATER. So obviously there are molecules we need other than amino acid proteins. However, they are the ones evolving the most and the quickest.
There are 170 types of Amino acids in human bodies. 20 of them make proteins, what is the purpose of the remaining 150? by Sai Janani Ganesan