Table 11.
Genes encoding ureohydrolases in the investigated cyanobacterial marine and freshwater cyanobacteria.
| Strain | Database entry* | AA | MM (kDa) | pI |
| Marine species | ||||
| Prochlorococcus marinus SS 120 | Pro1849 | 303 | 33.6 | 6.32 |
| Prochlorococcus marinus str. MIT 9211 | P9211_09067 | 296 | 32.7 | 6.45 |
| Prochlorococcus marinus MIT 9312 | PMT9312_1779 | 293 | 32.6 | 5.38 |
| Prochlorococcus marinus MIT 9313 | PMT2214 | 304 | 32.8 | 5.55 |
| Prochlorococcus marinus MED 4 | PMM1686 | 294 | 32.6 | 5.13 |
| Prochlorococcus marinus NATL 2A | PMN2A_1287 | 299 | 32.9 | 5.01 |
| Synechococcus sp. CC 9605 | Syncc9605_1082 Syncc9605_2591 |
396 291 |
43.8 31.3 |
5.03 4.91 |
| Synechococcus sp. CC 9902 | Syncc9902_2230 | 287 | 30.8 | 5.10 |
| Synechococcus sp. WH 8102 | SYNW1412 SYNW2422 |
426 286 |
46.8 30.4 |
5.48 4.68 |
| Synechococcus sp. WH 7805 | WH7805_06086 WH7805_09974 |
492 294 |
53.8 31.5 |
4.48 4.96 |
| Synechococcus sp. WH 5701 | WH5701_03860 WH5701_03684 |
401 308 |
44.1 32.6 |
5.35 4.96 |
| Synechococcus sp. RS 9917 | RS9917_06190 | 286 | 30.9 | 5.06 |
| Crocosphaera watsonii WH 8501 | n.d. | n.d. | n.d. | n.d. |
| Trichodesmium erythraeum IMS 101 | Tery_3780 | 303 | 34.0 | 4.80 |
| Freshwater species | ||||
| Synechococcus elongatus sp. PCC 6301 | n.d. | n.d. | n.d. | n.d. |
| Synechococcus elongatus sp. PCC 7942 | n.d. | n.d. | n.d. | n.d. |
| Synechococcus Yellowstone sp. JA-3-3-AB | CYA_0859 | 301 | 33.1 | 5.51 |
| Synechococcus Yellowstone sp. JA-2-3Bα (2–13) | CYB_1744 | 307 | 33.7 | 5.23 |
| Thermosynechococcus elongatus BP-1 | n.d. | n.d. | n.d. | n.d. |
| Synechocystis sp. PCC 6803 | Sll1077 Sll0228 |
390 306 |
42.9 33.5 |
5.06 4.90 |
| Gloeobacter violaceus PCC 7421 | n.d. | n.d. | n.d. | n.d. |
| Nostoc sp. PCC 7120 | Alr2310 | 346 | 38.6 | 4.69 |
| Nostoc punctiforme PCC 73102 | Npun02002114 | 347 | 38.5 | 4.53 |
| Anabaena variabilis ATCC 29413 | Ava_0127 | 346 | 38.5 | 4.66 |
N.d. = not detected. *These ureohydrolases are annotated as arginases, as agmatinases as well as 4-guanidino butyrases. The (+) in Table 3 for A2.1, B1, and E2 refers to an identical gene, because the gene annotation does not distinguish between arginases, agmatinases, and 4-guanidino butyrases. A classification is only possible in a few cases, in which enzymatic activity has been measured or the similarity values are very high to already biochemically well-characterized enzymes (see text for details).