ðə pɹɪsˈiːdɪŋ dɪskˈʌʃən ɪmplˈɪsɪtli ɐsˈuːmd ðætðə ɹˈoʊɾeɪmɚz ɑːɹ ˈɔːl dˈɪfɹənt ˌoːɹiəntˈeɪʃənz ʌvðə sˈeɪm ɐmˈiːnoʊ ˈæsɪd sˈaɪd tʃˈeɪn.
The preceding discussion implicitly assumed that the rotamers  are all different orientations of the same amino acid side chain.