cytosolic [4Fe-4S] assembly scaffold complex cellular_component A heterotetrameric complex with weak ATPase activity that is capable of scaffolding a 4Fe-4S (iron-sulfur) cluster. In yeast, the subunits are Nbp35 and Cfd1. In humans, the subunits are NUBP1 and NUBP2. rb 2015-08-18T22:50:29Z cytosolic scaffold protein complex Nbp35-Cfd1 ATPase complex CIA scaffold complex GO:1904564 ATPase complex iron-sulfur cluster assembly complex