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. In addition to its role in energy metabolism, AMP acts as a signaling molecule within cells. It can activate certain enzymes and pathways, such as the AMP-activated protein kinase (AMPK), which helps regulate energy balance and metabolism. This makes AMP important for maintaining cellular function and responding to energy demands.