PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7118423-2 1982 spectroscopy, we have investigated cis-trans isomerism for N-acetyl, N"-methylamide derivatives of syn- and anti-5-methylproline (syn: the methyl group and carboxamide are on the same side of the proline ring, anti: on opposite sides). Proline 121-128 synemin Homo sapiens 130-133 7118423-3 1982 For Ac-syn-5-MeProNHMe, we observe about 25% cis peptide bond isomers in most solvents as is common for oligopeptides of proline. Proline 121-128 synemin Homo sapiens 7-10