Heme located in
a hydrophobic pocket
formed mainly by
helices E and F
Fe(II) is 0.22 Å out
of the heme plane in
oxyMb on the proximal
His side; O2 in bent
geometry
Fe(II) is 0.55 Å out
of plane in deoxyMb
Structures of oxyMb and
deoxyMb are superimposable
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