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. Author manuscript; available in PMC: 2010 Nov 11.
Published in final edited form as: Structure. 2009 Nov 11;17(11):1494–1504. doi: 10.1016/j.str.2009.09.004

Figure 2.

Figure 2

Xe and organic halide binding to HbI and Mb.

(A and B) Comparison of the Xe binding sites within HbI (A) and Mb (B; PDB file 1J52). The Xe1 and Xe2 sites from both globins are at nearly identical locations whereas Xe4a/Xe4b site in HbI is close to, but not at identical location as Xe4 in Mb. Xe3 in Mb is not present in HbI.

(C and D) A close up view of the Xe (C) and DCE (D) binding sites is superimposed upon the corresponding FoXe-FoNative or FoDCE-FoNative difference electron density map, contoured at ± 3σ. The DCE binding site is equivalent to the Xe4a binding site.