| Cross Index | Acidaminococcus fermentans | 
| SuperSet | Prokaryote, Eubacteria Anaerobic Gram-Negative Cocci | 
| Compare | Acidaminococcus fermentans, Megasphaera, Syntrophococcus sucromutans Veillonella | 
| Contrast | Archaea Gram positive cocci | 
| Subset | 
| Morphology | Acidaminococcus fermentans | 
| CELLULAR | 
| Staining | Gram-negative | 
| Morphology | Cocci, 0.6-1.0 um in diameter, often occurring as oval or kidney-shaped diplococci. | 
| Motility | Non-motile; flagella are not present | 
| Specialized structures | Nonsporulating.. | 
| Division | 
| COLONIAL | 
| Solid surface | 
| Liquid | 
| Growth Parameters | Acidaminococcus fermentans | 
| PHYSIOLOGICAL | 
| Tropism | Chemoorganotrophic; amino acids, especially glutamate, are the main energy sources. Pyruvate, lactate, fumarate, malate, succinate and citrate are not used as energy sources | 
| Oxygen | Anaerobic; no growth on the surface of agar media incubated in the air | 
| pH | Optimum pH, 7.0 | 
| Temperature | Optimum temperature, 30-37`C. | 
| Requirements | Nutritional requirements are complex | 
| Products | Only 40% of strains catabolize glucose and the reaction is weak. In amino acid-containing media, acetic and butyric acids accumulate in a molar ratio of 2:1; CO2 is also formed, but H2 and propionate are not detectable | 
| Enzymes | Oxidase- and catalase-negative | 
| Unique features | 
| ENVIRONMENTAL | 
| Habitat | Isolated from the intestinal tract of the pig and man | 
| Lifestyle | |
| Pathogenicity | 
| Distribution | 
| Genome | Acidaminococcus fermentans | 
| G+C Mol % | 56 (Bd) | 
| Reference | Acidaminococcus fermentans | 
| First citation | Rogosa, M. 1969. Acidominococcus fermentans sp. nov., anaerobic Gram-negative diplococci using amino acids as the sole energy source for growth. J. Bacteriol 98: 756-766 | 
| The Prokaryotes | p | 
| Bergey's Systematatic | p 684 Rogosa, M | 
| Bergey's Determinative | p 347 | 
| References |