Solibacter aztos

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A single-celled heterotrophic Palaean originating in North Etelama notable for its ability to convert gaseous nitrogen into ammonia. Solibacter aztos does not support complex structures as its genetic material is not compact into a nucleus, and only grows to two micrometers (2μm) in length. It metabolizes by breaking down organic matter in the soil. The genetic material is stored loosely in a coil towards the center of the cell, supported by cytoplasm in the cell. Small ribosomal structures throughout the cell carry out nitrogen fixation and metabolic processes. Their respiration rate will increase with ambient oxygen to alter concentrations and fix nitrogen. S. aztos has a cell wall over the cell membrane as protection, as the temperatures in Zone K fluctuate.

S. aztos reproduces asexually by growing to full size, duplicating its genetic material, and splitting into two identical copies. The cell typically grows and splits quickly, finishing the process every 20 minutes. After mitosis and before cytokinesis the unsplit double-cell will disintegrate the cell wall, split, then the two new sister cells will form new cell walls to complete the process.