Beacon (BC ) is a newly discovered peptide isolated from the hypothalamus piaskówki ( Psammomys obesus) , which has been implicated in the regulation of energy balance. It is also known under the names of ubiquitin -like protein 5 ( UBL5 ) and homologous to ubiquitin ( Hub 1 ) . His presence is observed in almost all tissues examined . Beacon gene is highly conserved interspecies . Its expression in the hypothalamus, is proportional to glucose and insulin levels and body fat percentage and body mass in an animal species Psammomys obesus .