PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11511108-4 2001 Several of the 21-membered or larger lactams turned out to be potent and hMC-4R-selective agonists. Lactams 37-44 melanocortin 4 receptor Homo sapiens 73-79 16678415-4 2006 Compound 2 also showed a 4.3-fold higher hMC-4R selectivity over hMC-1R, thus providing us with information concerning size and chemical structure of the lactam ring for the development of the agonist with hMC-4R selectivity. Lactams 154-160 melanocortin 4 receptor Homo sapiens 206-212