The model demonstrates that there are complementary
regions on the surface of the interacting parts of HydA and
PetF that might lead to a close proximity between the [2Fe–
2S]-cluster of the ferredoxin and the H-cluster of the hydrogenase.
This geometry is consistent with efficient electron
transfer among these prosthetic groups. The information
derived from this computer model might be useful for
biophysical studies as well as for generating site-directed
mutations in the hydA gene.