Abstract
During growth of the freshwater cyanobacteria, Oscillatoria sp. BTCC/A0004, and Scytonema sp. TISTR 8208, a pink pigment is released into the growth medium. The pigment from each source had a molecular weight of approximately 250 kDa and had adsorption maxima at 560 and 620 nm. These results suggest that pink pigment is a phycoerythrin-like protein. It inhibited the growth of green algae, Chlorella fusca and Chlamydomonas reinhardtii, but not other cyanobacteria or true bacteria. The concentration at which growth inhibition 50% occurred was 0.5, 6 and more than 10 mg ml−1, respectively.
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Karseno, Harada, K., Bamba, T. et al. Extracellular phycoerythrin-like protein released by freshwater cyanobacteria Oscillatoria and Scytonema sp.. Biotechnol Lett 31, 999–1003 (2009). https://doi.org/10.1007/s10529-009-9964-x
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DOI: https://doi.org/10.1007/s10529-009-9964-x