TCDB is operated by the Saier Lab Bioinformatics Group

4 component system: The Gram-positive Bacterial Hemoglobin Receptor (Isd) Family

Q931P4 Iron-regulated surface determinant protein H aka IsdH aka HarA
P0C1S5 IsdA
Q6GHV7 Iron-regulated surface determinant protein B aka IsdB
Q8KQR1 IsdC