Adenosine monophosphate (AMP) is a nucleotide that plays a crucial role in cellular energy transfer. It consists of an adenosine molecule attached to a single phosphate group. AMP is involved in various biochemical processes, including the synthesis of adenosine triphosphate (ATP), which is the primary energy currency of cells. AMP also acts as a signaling molecule in cellular pathways. It can activate AMP-activated protein kinase (AMPK), an important regulator of energy homeostasis. This regulation helps maintain the balance of energy production and consumption in cells, influencing metabolism and overall cellular function.