The Amino Acid Sequence of Putidaredoxin, an Iron-Sulfur Protein from Pseudomonas putida

The iron-sulfur protein putidaredoxin from Pseudomonas putida contains 106 amino acids arranged in a single peptide chain. The complete amino acid sequence has been determined. The molecular weight including 2 atoms each of iron and sulfur is 11,594. The molecule contains 6 cysteine residues. It is suggested that positions 39, 45, 48, and 85 (or 86) may be chelated to the iron in the iron sulfide reactive center.