FIG 4.

Structure comparison of NfsA from Vibrio harveyi (gray) and NfoR from Staphylococcus aureus (red). The structures of NfoR (PDB code 7JH4) and NfsA (PDB code 2BKJ) were aligned using PyMOL (Schrödinger, Inc.). Topology diagrams for NfsA and NfoR are shown below each structure.