Kerinose Nucleic Acid

Kerinose Nucleic Acid, commonly abbreviated KNA, is the long-term hereditary polymer used by Life on Aron. KNA stores the genomic information required for cellular maintenance, development, reproduction, and inheritance and functions alongside NNA and Hapnin as part of the Central Genetic System.

KNA consists of a repeating kerinose-phosphate backbone carrying four informational bases arranged into two complementary pairs. It is chemically related to NNA, although differences in the structure and oxygen content of kerinose make KNA considerably less reactive and more resistant to degradation. This stability makes it poorly suited for most catalytic functions but highly effective for permanent information storage.

Genomic Organization

KNA genomes are generally divided into numerous closed loops. Each loop commonly contains a collection of between 1-1000 associated genes together with its associated regulatory sequences.

Individual KNA loops are organized around many scaffold proteins known as Kestomes. Multiple Kestomes can connect together to form dense genomic fibers known as Zoötin, allowing large numbers of genes to remain compact while retaining independent regulation.

When a gene is activated, its KNA loop section becomes accessible to transcription machinery and is copied into NNA. The resulting NNA transcript may then be used in protein synthesis, Hapnin synthesis, regulation, or other cellular processes.

KNA is believed to have evolved after both Hapnin and NNA, eventually replacing NNA as the primary genomic archive as increasing genome size favored a more chemically stable hereditary polymer.