Isolation and characterization of the minor components associated with microcystins LR and RR in the cyanobacterium (blue-green algae)

Ken ichi Harada, Kenji Matsuura, Makoto Suzuki, Mariyo F. Watanabe, Shinshi Oishi, Andrew M. Dahlem, Val R. Beasley, Wayne W. Carmichael

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Abstract

K. Harada, K. Matsuura, M. Suzuki, M. F. Watanabe, S. Oishi, A. M. Dahlem, V. R. Beasley and W. W. Carmichael. Isolation and characterization of the minor components associated with microcystins LR and RR in the cyanobacterium (blue-green algae). Toxicon 28, 55-64, 1990.-Two structurally similar analogues of microcystins LR and RR, cyclic peptide hepatotoxins from Microcystis, were isolated by chromatographic methods. Although they have the same mol. wt and amino acid compositions as those of the parent toxins, they do not possess similar toxicities. Ultraviolet and 1H-NMR spectral data for both components demonstrate clear structural difference of these cyclic peptides from the parent toxins, which are probably responsible for the marked decreases in their observed toxicities.

Original languageEnglish (US)
Pages (from-to)55-64
Number of pages10
JournalToxicon
Volume28
Issue number1
DOIs
StatePublished - 1990

All Science Journal Classification (ASJC) codes

  • Toxicology

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