Table 1. Distribution of enzymes of the Lysine-to-AASA catabolic pathways among prokaryotes.
| Kingdom | Phylum | Number of species containing a distinct enzyme of the four lysine-to-AASA pathways | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| |
|
AASADH |
LKR |
SDH |
LysDH |
LAT |
PIPOX |
LKR and SDH |
LysDH and AASADH |
LAT and AASADH |
Pip2C, PIPOX and AASADH |
| Archea | Euryarchaeotes | 19 | — | — | 12 | 1 | — | — | 2 | — | — |
| Crenarchaeotes | — | — | — | 12 | — | — | — | — | — | — | |
| Unclassified | 1 | — | — | 1 | — | — | — | — | — | — | |
| Eubacteria | Actinobacteria | 45 | 4 | 4 | 2 | 39 | — | 4 | 2 | 38 | — |
| Bacteroidetes | 31 | 20 | 19 | 7 | 9 | — | 19 | 7 | 8 | — | |
| Cyanobacteria | 6 | 1 | — | 3 | — | — | — | 1 | — | — | |
| Deinococcus/Thermus | 9 | — | — | — | — | — | — | — | — | — | |
| Firmicutes | 19 | — | — | 23 | — | — | — | 12 | — | — | |
| Proteobacteria | 177 | 14 | 5 | 96 | 4 | 61 | 4 | 88 | 3 | 25 | |
| Other | 16 | — | — | 3 | 3 | — | — | 3 | 2 | — | |
| Total number of taxa | 323 | 39 | 28 | 159 | 56 | 61 | 27 | 115 | 51 | 25 | |
Enzymes: AASADH, α-aminoadipic-δ-semialdehyde dehydrogenase; LAT, lysine-6-aminotransferase; LKR, lysine-ketoglutarate reductase; LysDH, lysine dehydrogenase; SDH, saccharopine dehydrogenase; PIPOX, pipecolate oxidase; Pip2C, Δ1-piperidine-2-carboxylate reductase.