File talk:Oxytocin.png

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

This image has the same problems as its labeled version, namely the amine group in the glycine that should be a hydroxyl group and the upper cysteine that should be a methionine, that I mentioned on the talk page of its labeled version. — Preceding unsigned comment was added by 50.235.102.246 (talk) 16:37, 19 March 2018 (UTC)[reply]

Neither of those issues is an error. The C-terminal end is correctly drawn as glycinamide, a modification of glycine. Also, there is no reason that every peptide must have a methionine at the N-terminus. In oxytocin, the N-terminal amino acid is cysteine. Ed (Edgar181) 22:44, 19 March 2018 (UTC)[reply]