Ric8 is involved in the EGL-30 neurotransmitter signalling pathway [1]. It is a guanine nucleotide exchange factor [2] that regulates neurotransmitter secretion.

1: RIC-8 (Synembryn): a novel conserved protein that is required for G(q)alpha signaling in the C. elegans nervous system. Miller KG, Emerson MD, McManus JR, Rand JB; Neuron. 2000;27:289-299. PMID:10985349

2: Expression of ric-8 (synembryn) gene in the nervous system of developing and adult mouse. Tonissoo T, Meier R, Talts K, Plaas M, Karis A; Gene Expr Patterns. 2003;3:591-594. PMID:12971991