Neuropeptide FF (NPFF), an octapeptide belonging to the RF-amide family of peptides, interacts with two distinct G-protein-coupled receptors, NPFF(1) and NPFF(2) and has wide variety of physiological functions in the brain including central cardiovascular and neuroendocrine regulation[1][2].
References:
[1]. Mankus JV, et al. Nonpeptide ligands of neuropeptide FF: current status and structural insights. Future Med Chem. 2012 Jun;4(9):1085-92.
[2]. Jhamandas JH, et al. Role of neuropeptide FF in central cardiovascular and neuroendocrine regulation. Front Endocrinol (Lausanne). 2013 Feb 7;4:8.