Table 1.
General overview of metabolic differences within the AMD plasmas
| Function | APL | EPL | GPL | FER1 | FER2 | IPL |
|---|---|---|---|---|---|---|
|
Aerobic metabolisms |
|
|
|
|
|
|
| Aerobic respiration |
Y |
Y |
Y |
Y |
Y |
Y |
| Fe oxidation (blue-copper protein) |
Y |
N |
Y |
Y |
Y |
N |
| Aerobic CODH |
N |
N |
N |
Y |
Y |
Y |
| Anaerobic CODH |
N |
N |
N |
N |
Y |
N |
|
Anaerobic metabolisms |
|
|
|
|
|
|
| Formate dehydrogenase |
Y |
Y |
N |
Y |
Y |
Y |
| Putative hydrogenase complex |
Y |
Y |
Y |
Y |
Y |
N |
| Fermentation to acetate |
Y |
Y |
Y |
Y |
Y |
Y |
|
Carbon catabolism |
|
|
|
|
|
|
| Glycolysis |
Y |
Y |
Y |
Y |
Y |
Y |
| Entner-Doudoroff pathway |
Y |
Y |
Y |
Y |
Y |
Y |
| Beta oxidation |
Y |
Y |
Y |
Y |
Y |
Y |
| Methylotrophy |
Y |
Y |
Y |
Y |
Y |
Y |
|
Biosynthesis |
|
|
|
|
|
|
| Cobalamin biosynthesis |
N |
N |
N |
Y |
Y |
N |
| Molybdopterin biosynthesis |
Y |
N |
N |
Y |
Y |
Y |
| Histidine synthesis |
Y |
N |
Y |
Y |
Y |
N |
| Leucine/Isoleucine synthesis |
Y |
N |
Y |
Y |
Y |
N |
| Glyoxylate shunt |
N |
Y |
N |
N |
N |
N |
|
Motility |
|
|
|
|
|
|
| Flagella |
Y |
Y |
N |
N |
N |
N |
| Chemotaxis |
N |
N |
N |
N |
N |
N |
|
Toxic metal resistance |
|
|
|
|
|
|
| Arsenic resistance |
Y |
Y |
Y |
Y |
Y |
Y |
| Copper resistance |
Y |
Y |
Y |
Y |
Y |
Y |
| Mercury resistance |
Y |
Y |
Y |
Y |
N |
Y |
|
Structure/Motility |
|
|
|
|
|
|
| S-layer |
Y |
Y |
Y |
N |
Y |
Y |
| Ether-linked lipids |
Y |
Y |
Y |
Y |
Y |
Y |
| Cellulose/cell wall polysaccharides |
N |
N |
N |
N |
N |
N |
| Pili | N | Y | Y | N | N | Y |
APL is Aplasma. EPL is Eplasma. GPL is Gplasma. FER1 and FER2 are Ferroplasma acidarmanus type I and type II. IPL is Iplasma. Y indicates that the pathway is found in the genome, whereas N indicates that it is not.