Purine–Pyrimidine Ring Structures as a Model for Spin Networks in DNA Computing Linked to Artificial Intelligence

The nitrogenous bases of DNA—purines (adenine, guanine) and pyrimidines (cytosine, thymine)—feature distinct ring structures that introduce non-uniform electronic, spatial, and quantum properties to the DNA double helix. We propose a quantum information model in which the purine–pyrimidine base pairs represent spin nodes in a discrete spin network. The differential π-electron delocalization, hydrogen bonding, and aromaticity inherent in these structures can be mapped onto spin orientations, entanglement states, and quantum correlation tensors in a DNA computing architecture. Embedding these base structures into a quantum spin network formalism allows for modeling of state transfer, entanglement generation, and AI-compatible quantum learning tasks using biological scaffolds. This approach aligns with developments in topological quantum computation and biomolecular quantum information theory.