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Amino acid sequence of the beta-subunit of phycoerythrin from the cryptophyte algae Chroomonas CS 24
J Godovac-Zimmermann1, M Sheil, P M Wrench
1John Curtin School of Medical Research, Australian National University, Canberra, ACT.
Biochimica Et Biophysica Acta
|March 27, 1992
Abstract:
The full amino acid sequence of the beta-subunit of Chroomonas CS24 phycoerythrin has been determined by conventional Edman degradation and mass spectrometry. The sequence compromises 177 amino acids with a molecular mass of 18669 Da. It is 91.5% identical to the deduced amino acid sequence of Cryptomonas phi beta-phycoerythrin (Reith, M. and Douglas, S. (1990) Plant Mol. Biology 15, 585-592). The chromophores are bound by single thioether linkages. No evidence of microheterogeneity was found confirming that both beta-subunits of the holoprotein are identical.