Analysis of the sulfur transfer from cysteine desulfurases to MoaD by 35S-labeled l-cysteine. Lane 1, CsdA; lane 2, CsdA and MoeB; lane 3, CsdA and MoaD; lane 4, CsdA, MoeB, and MoaD; lane 5, CsdA, MoeB, and MoaD (without ATP); lane 6, SufS; lane 7, SufS and MoeB; lane 8, SufS and MoaD; lane 9, SufS, MoeB, and MoaD; lane 10, SufS, MoeB, and MoaD (without ATP); lane 11, IscS; lane 12, IscS and MoeB; lane 13, IscS and MoaD; lane 14, IscS, MoeB, and MoaD; lane 15, IscS, MoeB, and MoaD (without ATP). The gel was stained with Coomassie Brilliant Blue (A), and the 35S radioactivity was visualized on a phosphorimaging plate (B).