Table 6.
Gene clusters involved in the biosynthesis of secondary metabolites
| Strain (a) | Size Mb | % SM (b) | PKS | NRPS | Patellamide like | ||||
| Modular type I | Iterative type I/glycolipid synthase (c) | Enedyine type | PKS III | NRPS/PKS | NRPS | ||||
| Mic-PCC7806 | 5.2* | 3.5 | 1 | 0 | 1 | 1 (d) | 2 | 1 | 1 |
| Mic-NIES843 | 5.8 | 2.6 | 1 | 0 | 1 | 0 | 2 | 1 | 0 |
| Cwa-WH8501 | 6.2* | 1.6 | 0 | 0 | 0 | 0 | 1 | 6 (e) | 0 |
| Npu-PCC73102 | 8.2 | 4.5 | 2 | 2 | 0 | 0 | 6 | 1 | 0 |
| Syn-PCC6803 | 3.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
(a) See the Methods section for the strain identifiers.
(b) %SM: percentage of the genome dedicated to secondary metabolites of the non-ribosomal peptide, polyketide or patellamide type family.
(c) Iterative PKS I not including enedyine type.
(d) PKS III is associated with modular PKS I.
(e) NRPS clusters in Cwa-WH8501 are all of a small size with an average of 1–2 genes per cluster.
* in-finishing genome; Mb: megabases; PKS: polyketide synthase; NRPS: non-ribosomal peptide synthetase.