Kinetic and Mutational Studies of Three NifS Homologs from Escherichia coli: Mechanistic Difference between L-Cysteine Desulfurase and L-Selenocysteine Lyase Reactions

We have purified three NifS homologs from Escherichia coli, CSD, CsdB, and IscS, that appear to be involved in iron-sulfur cluster formation and/or the biosy...