TABLE 2.
Metabolic genes of defined function on the R7A symbiosis island
| Msi number functional category and gene no. | Gene/operon mnemonic | Gene product(s) or predicted function |
|---|---|---|
| Amino acid metabolism related to 1-carbon metabolism | ||
| msi156 | ltaM | Low specificity l-threonine aldolase |
| msi160 | metE | 5-methyltetrahydropteroyltriglutamate-homocysteine methyltransferase |
| msi166 | metK | SAM synthetase |
| msi167 | glyA | Serine hydroxymethyltransferase |
| msi204 | cysM | Cysteine synthase |
| msi237-msi234 | soxBDAG1 | Sarcosine oxidase |
| msi246 | kbl | 2-amino-3-ketobutyrate coenzyme A ligase |
| msi256-msi253 | soxBDAG2 | Sarcosine oxidase |
| Other amino acid metabolism | ||
| msi043 | dapA | Dihydrodipicolinate synthase |
| msi182 | maaL | Methylaspartate ammonia-lyase |
| msi203 | Fusion protein containing putative ligase and arginosuccinate lyase | |
| msi323 | asnB | Asparagine synthetase |
| msi326 | aatA | Aspartate aminotransferase |
| Carbon metabolism | ||
| msi040 | cah | A-type carbonic anhydrase |
| msi177 | fumA | Fumarate hydratase Class I |
| msi282 | adc | Acetoacetate decarboxylase |
| msi327 | pepM | Phosphoenolpyruvate phosphomutase |
| Phosphate metabolism | ||
| msi311-msi305 | phnGHIJKML | Phosphonate degradation |
| Cofactor synthesis | ||
| msi363-msi365 | nadABC | Nicotinate biosynthesis |
| msi367-msi371 | bioBFDAZ | Biotin biosynthesis |
| msi372 | panD | Aspartate 1-decarboxylase |
| msi389-msi394 | thiCOSGED | Thiamine biosynthesis |