Atribacterota is a phylum of bacteria, which are common in anoxic sediments rich in methane.

They are distributed worldwide and in some cases abundant in anaerobic marine sediments, geothermal springs, and oil deposits.

Genetic analyzes suggest a heterotrophic metabolism that gives rise to fermentation products such as acetate, ethanol, and CO2.

[2][3] According to phylogenetic analysis, Atribacterota appears to be related to several thermophilic phyla within Terrabacteria[4] or may be in the base of Gracilicutes.

[5] According to research, Atribacterota shows patterns of gene expressions which consists of fermentative, acetogenic metabolism.