Predicted to enable cAMP response element binding protein binding activity. Involved in positive regulation of CREB transcription factor activity. Acts upstream of or within several processes, including energy homeostasis; negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway; and negative regulation of lipid catabolic process. Located in cytoplasm and nucleus. Orthologous to human CRTC3 (CREB regulated transcription coactivator 3). [provided by Alliance of Genome Resources, Apr 2022]