20: HydB/Nqo4-like (Nickel-iron hydrogenase, large subunit)

This section contains structures from multiple Pfam families

Pfam family PDB
NiFeSe_Hases 1ubl_L, 1cc1_L
Oxidored_q6 1ubl_L, 1cc1_L
NiFe_dehyd_N 1ubl_L, 1cc1_L