[Adenylate kinase activity of phycobilisomes from the blue-green algae Microcystis aerogenosa]

The phycobilisomes (PBS) from the blue-green algae Microcystis aerogenosa was found to possess the adenylate kinase activity. The enzyme activity of PBS is kept for 2 weeks, reaching its maximum on th 2nd-4th day after PBS isolation from the cells, and is retained after passage of freshly isolated PBS through a column with Sephadex G-25. The adenylate kinase activity of PBS is thermostable, depends on the protein concentration in the sample, undergoes activation by white light and is inhibited by glutaric aldehyde. The enzyme activity is presumably determined by the components of the low molecular weight protein fraction of non-pigment origin, which are constituents of PBS.