(January 21, 2014 at 6:41 am)Chuck Wrote: Ahh, no, he is well informed in this case, you are the REALLY presumptuously ignorant one. There are enormous numbers of different proteins. Proteins differ by more than just their ingredients. They also differ by their sizes and shapes. In fact every specie of animal and plants have some protein that is unique to that species. There is likely unique proteins difference even amongst members of same species. On the whole there are specific proteins as well as families of proteins that characterizes each taxonomic group at each level of life on earth. The reason why different DNA can lead to different species is precisely through the mechanism of generating unique, species specific proteins. Which proteins it actually is, not just what substance the proteins is made of, is also decisively important to how your body might deal with it after ingesting it. That's why there is such a thing as animal protein in dietary requirement. That's also why eating some things can get you sick, and other proteins can get you mad cow disease.
we need 8 amino acids that we cannot synthesise ourselves. The acid is the same no matter where it is sourced.