SDNAMRF-NH₂ docked to FMRFa-R.

<p>Contacts between the amino acids in SDNAMRF-NH₂ are shown as S (brick red), D (tan), N (yellow), A (sky blue), M (green), R (red), and F7 (blue) and the receptor, FMRFa-R, whose transmembrane regions are labeled TM# where # is 1–7. The C-terminal F was amidated, -NH₂.