Nucleotides serve dual roles in biochemistry: they act as structural monomers for nucleic acid synthesis and function as metabolic intermediates regulating energy transfer, signaling, and enzyme activity. The domain-specific theory distinguishes between the genomic functions of deoxyribonucleotides (DNA/RNA formation) and the energetic/catalytic roles of specific derivatives like ATP, GTP, UTP, CDP-diacylglycerol, allosteric regulators such as cAMP/cGMP, and coenzyme precursors including NAD⁺/FAD. These molecules are fundamental to cellular metabolism because they couple exergonic energy release with endergonic biosynthetic pathways via high-energy phosphate bonds while mediating intracellular communication through cyclic second messengers derived from hydrolysis of the phosphoanhydride linkage.
Nucleotides serve dual roles in biochemistry: they act as structural monomers for nucleic acid synthesis and function as metabolic intermediates regulating energy transfer, signaling, and enzyme acti…