Occurrence of sym-homospermidine as the major polyamine in nitrogen-fixing cyanobacteria.

We analyzed the amount of polyamines in a variety of cyanobacteria including nitrogen-fixing and nonfixing species. All the cyanobacteria capable of fixing nitrogen, contained sym-homospermidine as the major polyamine. The concentration of putrescine, spermidine and spermine was extremely low in these cyanobacteria. The cyanobacteria which normally fail to… CONTINUE READING