HFCS, if made right, will have no proteins in it that could be influenced by GMO. You basically take the starch, pass it over an enzyme bed, and the rest of the process is separation and purification of the fructose.
A more likely source of something “bad” from a GMO would be the enzymes.
Interesting...thank you very much for the info. I really don’t have enough bio-chemical background. I constantly rely on the advice of those “in the know”, in regards to more things than I can keep track of...