Katsura Inoue

Amino acid sequence of a ferredoxin from Rhodymenia palmata, a red alga in the florideophyceae

Abstract The amino acid sequence of a [2Fe-2S] ferredoxin from a red alga, Rhodymenia palmata in the family Florideophyceae, was determined by conventional methods. The ferredoxin is composed of 97 amino acid residues having five cysteines, but lacking methionine and tryptophan. It possesses a number of structural features of particular interest. The amino acid sequence is compared with those previously determined for ferredoxins from two red algae in the family Bangiophyceae. Conclusions from a comparison of the structures, by noting features such as the presence of gaps in the sequences and by constructing a phylogenetic tree, were consistent with the proposed taxonomic relationship among these algae.