4XS0:
reference: The structure of haemoglobin bound to the haemoglobin receptor IsdH from Staphylococcus aureus shows disruption of the native alpha-globin haem pocket., Dickson CF, Jacques DA, Clubb RT, Guss JM, Gell DA, Acta Crystallogr D Biol Crystallogr. 2015 Jun;71(Pt 6):1295-306. doi:, 10.1107/S1399004715005817. Epub 2015 May 14. PMID: 26057669

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