Cytochrome cs from Rhodymenia palmata and Porphyra umbilicalis and the amino acid sequences of their N-terminal regions

Basic c-type cytochromes homologous with plant and animal mitochondrial cytochrome c have been isolated and purified from Rhodymenia palmata and Porphyra umbilicalis. The N-terminal regions have been analysed using a Beckman 890C automatic sequencer. When compared to animal cytochrome c, the Rhodymenia cytochrome c has an unblocked N-terminal tail of 10 amino acids, whereas Porphyra has an unblocked N-terminal tail of only a single amino acid.