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Variability of the molecular mass of α-subunit in phycocyanins of colonial Microcystis aeruginosa f. aeruginosa in different eutrophic pond and lakes

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Abstract

Electrospray ionization mass spectra of phycocyaninsof eight samples from natural blooms of Microcystis aeruginosa f. aeruginosa collectedat different eutrophic pond and lakes indicated thatthe α subunits of phycocyanins in the samespecies have different molecular masses, whereas theβ subunits have almost constant molecularmasses. A negative linear relationship between themolecular mass of α subunit of phycocyanin andthe concentration of chlorophyll of natural andcolonial cyanobacterial samples was found. Aninterannual similarity of the α subunitmolecular masses of phycocyanins was observed fromsamples collected at the same sampling site at LakeKasumigaura during 1994 and 1995. A locationalvariability of the α subunit molecular massesof phycocyanins was also observed among samplescollected at three eutrophic pond and lakes.

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Authors and Affiliations

  1. Department of Ocean Sciences, Japan

    Shinya Hashimoto & Akira Otsuki

  2. Department of Aquatic Biosciences, Tokyo University of Fisheries, 4-5-7 Konan, Minato-ku, Tokyo, 108, Japan

    Teru Ioriya

Authors
  1. Shinya Hashimoto
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  2. Teru Ioriya
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  3. Akira Otsuki
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Hashimoto, S., Ioriya, T. & Otsuki, A. Variability of the molecular mass of α-subunit in phycocyanins of colonial Microcystis aeruginosa f. aeruginosa in different eutrophic pond and lakes. Hydrobiologia 350, 163–168 (1997). https://doi.org/10.1023/A:1003092000839

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  • DOI: https://doi.org/10.1023/A:1003092000839

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