Research Article
Genomic Analysis Unravels Reduced Inorganic Sulfur Compound Oxidation of Heterotrophic Acidophilic Acidicaldus sp. Strain DX-1
Table 2
General features of Acidicaldus sp. strain DX-1 in comparison with other heterotrophic acidophiles.
| Organism | Acidicaldus sp. strain DX-1 | Acidiphilium cryptum JF-5 | Acidiphilium multivorum AIU301 | Acetobacter pasteurianus |
| Isolated from | Acid effusion of mill tailing | Acidic Sediments | Pyritic acid mine drainage | Spontaneous cocoa bean heap fermentation | Temperature range | Moderate thermophilic (50~55°C) | Mesophilic (30~35°C) | Mesophilic (30–35°C) | Mesophilic (25–30°C) | pH range | 2.5–3.0 | 3.0–3.5 | 3.0–3.5 | 5.4–6.3 | Nutrition type | Heterotrophic | Heterotrophic | Heterotrophic | Heterotrophic | Oxygen requirement | Facultatively anaerobic | Facultatively anaerobic | Facultatively anaerobic | Obligately aerobic | Fe(III) reduction | Yes | Yes | Yes | No | Sulfur oxidation | Yes | No | No | No | Genome size (Mb) | 2.99 | 3.39 | 3.75 | 2.91 | GC content | 68.48% | 67.99% | 67.58% | 53.04% | Protein-coding genes | 3259 | 3063 | 3448 | 2875 | rRNA operon | 1 | 2 | 2 | 5 | Number of tRNAs | 43 | 47 | 48 | 57 |
|
|