The complete amino acid sequence of parsley (Petroserinum sativum) ferrodoxin.

The amino acid sequence of a ferredoxin from parsley (Petroserinum sativum) was determined by various conventional methods. Five tryptic peptides of carboxymethylated(Cm)-ferrodoxin were sequenced by a combination of automatic solid-phase and manual Edman degradations. The amino(N)-terminal sequences of Cm-ferrodoxin and its carboxy(C)-terminal half produced by tryptic cleavage specifically at the sole arginine residue of the molecule overlapped the five tryptic peptides. The molecule consists of 96 amino acid residues, including 5 cysteines, and lacks tryptophan. Parsley ferredoxin shows the greatest homology to wheat ferredoxin among other green plant ferredoxins.