NukleotidExzisionsReparatur

NukleotidExzis is a fictional biochemical process described in speculative biology, science fiction, and tabletop role-playing materials as a specialized enzyme-catalyzed reaction responsible for nucleotide turnover. In these works, NukleotidExzis is depicted as a tightly regulated pathway that can extract nucleotides from nucleic acids or recycle free nucleo-bases under stress conditions, often involving a family of hypothetical enzymes collectively termed NEx enzymes.

Mechanism: Descriptions vary, but common elements include selective cleavage of phosphodiester bonds and rapid reassembly into monophosphates and ribose- or deoxyribose-containing units, with energy release used to power cellular remodeling. Some versions describe cofactors or energy currencies unique to the process, while others imagine nuclease-like steps paired with ligases that reconstitute nucleotides. The concept is deliberately speculative and not grounded in established biochemistry.

Origins and usage: NukleotidExzis appears across multiple fictional settings, from science fiction anthologies to homebrew role-playing campaigns, sometimes linking to genome maintenance, stress responses, or artificial life. It is often juxtaposed with known processes such as exonuclease activity, nucleotide salvage, or DNA repair.

Real-world status: There is no peer-reviewed evidence for a real-world NukleotidExzis pathway. The term is not recognized by major biochemical databases. As a result, it is treated as a fictional construct rather than an established biological mechanism.