Molecular Weight and Quaternary Structure of Yeast l ‐Lactate Dehydrogenase (Cytochrome b2)

Amino acid analyses of l‐lactate dehydrogenase from baker's yeast show that the minimum molecular weight (53000 daltons) of the protein is much lower than found in the literature (80000). This result, combined with those reported in the following papers, leads to a revision of the dimeric model generally accepted for cytochrome b2.