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. 1988 Apr;86(4):996–998. doi: 10.1104/pp.86.4.996

N-Terminus Conservation in the Terminal Pigment of Phycobilisomes from a Prokaryotic and Eukaryotic Alga 1

Elisabeth Gantt 1,2, Francis X Cunningham Jr 1,2, Claudia A Lipschultz 1,2, Mamoru Mimuro 1,3
PMCID: PMC1054615  PMID: 16666079

Abstract

High molecular weight polypeptides from phycobilisomes, believed to be involved in facilitating the energy flow from phycobilisomes to thylakoids, are conserved in the prokaryote Nostoc sp. and the eukaryote Porphyridium cruentum. Partial N-terminal sequence analysis of the phycobilisome-polypeptides of Nostoc (94 kilodalton) and Porphyridium (92 kilodalton) revealed 55% identity in the first 20 residues, but no significant homology with sequences of other phycobiliproteins or phycobilisome-linkers. Polypeptides (94 and 92 kilodalton) from Nostoc thylakoids free of phycobilisomes, previously presumed to be involved in the phycobilisome-thylakoid linkage (M Mimuro, CA Lipschultz, E Gantt 1986 Biochim Biophys Acta 852: 126) exhibit the same immunocrossreactivity but are different from the 94 kilodalton-phycobilisome polypeptide by having blocked N-termini and a different amino acid composition.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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