PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11101306-5 2000 By examination of the binding affinities and potencies of substituted NDP-MSH peptides at receptor mutants, evidence was found that core melanocortin peptide residue Arg8 interacts at a molecular level with hMC4R TM3 residue D122. melanocortin peptide 137-157 melanocortin 4 receptor Homo sapiens 207-212