Gastrin-releasing peptide GRP stimulates gastrin release as well as other gastrointestinal hormones. Operates as a negative feedback regulating fear and established a causal relationship between GRP- receptor gene expression, long-term potentiation, and amygdala- dependent memory for fear (By similarity). GRP_SHEEP 134 Neuromedin-C MRSREVSLVLLALVLCPAPRGSAAPVTAGRAGALAKMYTRGNHWAVGHLMGKKSVAESPQLREEESLKEQLREYAQWEEATRNLLSLLQAKVAQGHQPPRWEPLSIHQPAWDSKDVSNFKDSGSQREGGNPQLY GRP-10 GRP