Transcription factor which regulates the expression of genes involved in lipid metabolism in response to nutrient availability (PubMed:23604316, PubMed:29113111). Binds to the E-box motif 5'-CACGTG-3' (PubMed:19632181). Under well-fed conditions, binds to the promoter and represses the expression of lipase genes lipl-1, lipl-2, lipl-3 and to a lesser extent lipl-5, thereby preventing lipolysis (PubMed:23604316). In response to a high-glucose diet, promotes fatty acid synthesis, elongation and desaturation by up-regulating transcription factor sbp-1 expression (PubMed:29113111). Under well-fed conditions, acts remotely in the intestine to up-regulate the expression of chemoreceptor srh-234 gene in the ADL sensory neuron, possibly by regulating the insulin signaling pathway (PubMed:27487365). May form homodimer (PubMed:19632181). Interacts (via N-terminus) with skn-1 isoforms a and c (PubMed:23040073). In response to nutrient levels, shuttles between the cytoplasm and the nucleus (PubMed:29113111). Localizes to the nucleus in response to high glucose levels (PubMed:29113111). Expressed in the intestine and in the AWC sensory neurons. Down-regulated by fasting. RNAi-mediated knockdown causes a depletion of fat stores. RNAi-mediated knockdown in the intestine causes a fasting-like transcriptional response, characterized by the up-regulation of the lipl-1 gene transcription. Belongs to the MAX family.