Assertion: hemoglobin's oxygen | /r/CapableOf | bind to the iron center
Facets:
Source sentences:
text: As illustrated above, when oxygen binds to the iron center, it causes contraction of the iron atom, and causes it to move back into the center of the porphyrin ring plane (see moving diagram).
text: As illustrated above, when oxygen binds to the iron center, it causes contraction of the iron atom, and causes it to move back into the center of the porphyrin ring plane (see moving diagram).