Assertion: hemoglobin's iron atom | /r/AtLocation | place
Facets:
value: by five histidines residues
type: OTHER
Source sentences:
text: μ–η2:η2) bridging formation between CuA and CuB. Hemerythrin (and myo-hemerythrin) secure O 2 between two iron atoms (Fe 1 and Fe 2 ) which are held in place by five histidines residues, one aspartic acid and one glutamic acid.