| 1.2635816 | Peptide |
| 0.99947727 | Opioid |
| 0.9966875 | Opioid type K |
| -0.5887599 | Opioid type X |
| -0.7730918 | Opioid type M |
| -1.0326489 | Opioid type D |
| -0.53110355 | Chemokine |
| -0.8650092 | Galanin |
| -0.91598594 | Tachykinin |
| -0.92775637 | Angiotensin |
| -1.0106976 | Endothelin |
| -1.0155568 | Neuromedin U |
| -1.0439308 | Thrombin |
| -1.0461324 | C5a anaphylatoxin |
| -1.047439 | Somatostatin |
| -1.0681059 | Fmet-leu-phe |
| -1.0833936 | CCK |
| -1.0875295 | Urotensin II |
| -1.1080137 | Bombesin |
| -1.1144248 | Melanocortin |
| -1.1285748 | APJ like |
| -1.1530823 | Chemokine receptor-like |
| -1.156252 | GPR37 / endothelin B-like |
| -1.1596557 | Neuropeptide Y |
| -1.1642083 | Interleukin-8 |
| -1.1766813 | Adrenomedullin (G10D) |
| -1.186027 | Orexin & neuropeptide FF |
| -1.2132838 | Neurotensin |
| -1.2280576 | Bradykinin |
| -1.2408404 | Vasopressin-like |
| -1.2500246 | Proteinase activated |
| -0.9184028 | Thyrotropin-releasing hormone & Secretagogue |
| -0.9622345 | Gonadotropin-releasing hormone |
| -0.97372633 | Nucleotide-like |
| -1.0000882 | Class A Orphan/other |
| -1.0539432 | Melatonin |
| -1.070745 | Prostanoid |
| -1.0773331 | Hormone protein |
| -1.0789081 | Cannabis |
| -1.0924942 | Olfactory |
| -1.1012686 | Platelet activating factor |
| -1.1063794 | (Rhod)opsin |
| -1.1249616 | Viral |
| -1.3038179 | Lysosphingolipid & LPA (EDG) |
| -1.7139311 | Amine |