In one of our lessons about biochemistry it is showing the molecule of glycine starting with H3N and we are required to show the peptide bond between glycine and valine. However every structure that comes up on google for Glycine starts with H2N and not H3N. I was wondering why is there a variation like that and if both are correct and if I answer showing the combined structure of the formula that starts with H2N instead of using the one in our lesson if that would still be correct?